{"title":"Pipe Fittings - Unions \u0026 Couplings","description":"\u003cp\u003ePipe Fittings - Unions \u0026amp; Couplings: Plumbing fittings, tubing and valves for installing and servicing water treatment equipment.\u003c\/p\u003e\u003cp\u003eThis collection has 21 products from brands including John Guest, American Granby, Parker Hannifin and Watts, priced from $14.97 to $107. Shipping is free anywhere in the USA.\u003c\/p\u003e\u003cp\u003eNot sure which one fits your system? Call us at 813-897-9971 or email watersoftenerplus@gmail.com with your model or a photo of the label, and we will match the right part.\u003c\/p\u003e","products":[{"product_id":"rta-plug-un-park-union-dust-plug-w-o-ring-rta-plug-un","title":"Park Union Dust Plug without O-Ring — RTA-PLUG-UN, Park Union Dust Plug W\/O-Ring, RTA-PLUG-UN","description":"\u003cp\u003e\u003cstrong\u003ePark Union Dust Plug for Mineral Tanks – Protect Your Water System from Contaminants\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned to safeguard your water softener and mineral tanks, the Park Union Dust Plug W\/O-Ring offers a reliable solution to prevent dust, debris, and other contaminants from entering your system during maintenance or storage. This essential mineral tank accessory ensures your water treatment components remain clean and efficient, reducing downtime and preserving system integrity.\u003c\/p\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eProtects your mineral tank openings from dust and debris contamination\u003c\/li\u003e\n  \u003cli\u003ePrevents damage to internal components by sealing unused ports securely\u003c\/li\u003e\n  \u003cli\u003eDurable construction ensures long-lasting performance under various conditions\u003c\/li\u003e\n  \u003cli\u003eCompatible with a wide range of water softener systems and mineral tank accessories\u003c\/li\u003e\n  \u003cli\u003eEasy to install and remove, simplifying maintenance and system upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe Park Union Dust Plug is designed to fit snugly into the unused ports of your mineral tank, acting as a barrier against external contaminants. By sealing these openings, it prevents dust, dirt, and moisture from entering the tank during service or periods of inactivity. This helps maintain the purity of your water treatment media and protects sensitive internal parts from premature wear or clogging.\u003c\/p\u003e\n\n\u003cp\u003eWithout a proper dust plug, airborne particles can accumulate inside your water softener system, potentially causing blockages or reducing filtration efficiency. This plug’s design ensures a secure fit without the need for an O-ring, streamlining installation while maintaining effective protection.\u003c\/p\u003e\n\n\u003ch2\u003eWhat to Expect\u003c\/h2\u003e\n\u003cp\u003eOnce installed, you will immediately notice that your mineral tank ports are well-sealed, helping to maintain a clean environment inside the system. During the first days and weeks, the dust plug prevents contaminants from entering, which supports optimal water flow and filtration performance.\u003c\/p\u003e\n\n\u003cp\u003eOver the long term, this dust plug contributes to reduced maintenance needs by minimizing sediment buildup and protecting your system’s internal components. Its durable design means you can rely on it to perform consistently without frequent replacements or adjustments.\u003c\/p\u003e\n\n\u003ch2\u003eWhat’s Inside\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePolypropylene Plug Body – Provides strong, lightweight protection against dust and debris\u003c\/li\u003e\n  \u003cli\u003ePrecision Molded Fit – Ensures a secure and stable seal in mineral tank ports without requiring an O-ring\u003c\/li\u003e\n  \u003cli\u003eCorrosion-Resistant Material – Enhances longevity even in humid or damp system environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eIdentify the unused port or opening on your mineral tank or water softener system.\u003c\/li\u003e\n  \u003cli\u003eClean the port thoroughly to remove any dirt or moisture before installation.\u003c\/li\u003e\n  \u003cli\u003eInsert the Park Union Dust Plug firmly into the port until it fits securely.\u003c\/li\u003e\n  \u003cli\u003eCheck that the plug is flush and stable to prevent accidental dislodging.\u003c\/li\u003e\n  \u003cli\u003eRemove the plug easily when you need to access the port for maintenance or upgrades.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eWhy Choose This Product\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eManufactured with high-quality, durable materials designed for water treatment environments\u003c\/li\u003e\n  \u003cli\u003eProduced by Water Softener Plus, a trusted vendor specializing in mineral tank accessories and parts\u003c\/li\u003e\n  \u003cli\u003eSpecifically engineered to fit common mineral tank configurations without the need for additional sealing components\u003c\/li\u003e\n  \u003cli\u003eEnhances system reliability by preventing contamination that could compromise water quality or equipment lifespan\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQ \u0026amp; Safety\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this dust plug compatible with all mineral tanks?\u003c\/strong\u003e\u003cbr\u003eIt is designed to fit standard Park Union mineral tank ports but always verify your tank’s dimensions to ensure compatibility.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes the plug require an O-ring for sealing?\u003c\/strong\u003e\u003cbr\u003eNo, this model is designed to provide a secure seal without an O-ring, simplifying installation and maintenance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow often should I replace the dust plug?\u003c\/strong\u003e\u003cbr\u003eWith proper care, the plug can last for years; inspect it during routine maintenance and replace if damaged or worn.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan the plug be used in wet environments?\u003c\/strong\u003e\u003cbr\u003eYes, it is made from corrosion-resistant materials suitable for the humid conditions typical in water treatment systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs installation safe for non-professionals?\u003c\/strong\u003e\u003cbr\u003eYes, the plug is easy to install and remove without special tools, making it suitable for DIY use with basic precautions.\u003c\/p\u003e\n\n\u003cp\u003eUpgrade your system reliability today—add this Park Union Dust Plug to your cart and keep your water flowing clean and consistent.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":44819802423349,"sku":"780851339605","price":78.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/rta-plug-un_1-r1200.jpg?v=1789609887"},{"product_id":"pvc10u-80s-1-sch-80-pvc-union-sxs-2000-series-3857s510","title":"1 inch Schedule 80 PVC union fitting side-by-side — PVC10U-80S, 1\" Sch 80 PVC Union, SxS, 2000 Series, 3857S510","description":"\u003cp\u003e\u003cstrong\u003eDurable 1\" Sch 80 PVC Union for Reliable Commercial RO System Connections\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe PVC10U-80S 1\" Schedule 80 PVC Union offers a secure and leak-resistant solution designed specifically for commercial reverse osmosis (RO) components. Engineered to withstand demanding water treatment environments, it ensures easy installation and maintenance while maintaining system integrity. This robust PVC union addresses common challenges in RO setups by providing a dependable connection that simplifies system servicing and reduces downtime.\u003c\/p\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eEnsures leak-proof connections to protect your commercial RO system from water damage\u003c\/li\u003e\n  \u003cli\u003eFacilitates quick and easy disassembly for maintenance and system upgrades\u003c\/li\u003e\n  \u003cli\u003eConstructed from Schedule 80 PVC for enhanced chemical resistance and durability\u003c\/li\u003e\n  \u003cli\u003eCompatible with a wide range of water treatment setups, supporting versatile system design\u003c\/li\u003e\n  \u003cli\u003eReduces downtime by simplifying component replacement without cutting pipes\u003c\/li\u003e\n  \u003cli\u003eDesigned for side-by-side (SxS) installation to optimize space in compact RO systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThis 1\" Schedule 80 PVC union acts as a coupling device that connects two sections of PVC piping in commercial RO water treatment systems. Its union design allows the pipes to be joined securely while enabling easy disconnection without the need to cut or disturb the piping layout. The Schedule 80 rating ensures the union withstands higher pressure and chemical exposure typical in commercial water softener and RO applications.\u003c\/p\u003e\n\u003cp\u003eWhen installed, the union seals tightly to prevent leaks, maintaining system efficiency and protecting sensitive RO membranes and components downstream. Its side-by-side (SxS) configuration also helps maintain streamlined flow paths for optimal water treatment performance.\u003c\/p\u003e\n\n\u003ch2\u003eWhat to Expect\u003c\/h2\u003e\n\u003cp\u003eUpon installation, you will notice a secure and stable connection that holds firm under typical commercial RO system pressures. The union’s chemical-resistant PVC material maintains its integrity even when exposed to various water treatment chemicals, ensuring consistent performance from day one.\u003c\/p\u003e\n\u003cp\u003eOver the first few weeks, the union will prove its value by simplifying routine maintenance, such as membrane replacements or system inspections, allowing quick disassembly without leaks or damage. Long term, this component supports system longevity by minimizing wear on pipe threads and joints, reducing the need for frequent repairs.\u003c\/p\u003e\n\n\u003ch2\u003eWhat’s Inside\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eSchedule 80 PVC Body – Provides high strength and chemical resistance for commercial water treatment environments\u003c\/li\u003e\n  \u003cli\u003eThreaded Union Nut – Allows easy tightening and loosening to connect or disconnect pipes without specialized tools\u003c\/li\u003e\n  \u003cli\u003eEPDM O-Ring Seal – Ensures a watertight seal, preventing leaks and protecting system components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eTurn off the water supply and relieve system pressure before installation.\u003c\/li\u003e\n  \u003cli\u003ePrepare the PVC pipes by cutting them cleanly and ensuring the ends are free of debris.\u003c\/li\u003e\n  \u003cli\u003eThread the union nut onto one pipe end, then align the two pipe ends together.\u003c\/li\u003e\n  \u003cli\u003eHand-tighten the union nut to secure the connection; use a wrench if needed for a snug fit without over-tightening.\u003c\/li\u003e\n  \u003cli\u003eRestore water supply and check the union for any leaks during initial system pressurization.\u003c\/li\u003e\n  \u003cli\u003eIf maintenance is required, simply loosen the union nut to separate the pipes without cutting or damaging the system.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eWhy Choose This Product\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eManufactured to withstand rigorous commercial RO and water softener system demands\u003c\/li\u003e\n  \u003cli\u003eWater Softener Plus is a trusted provider known for quality water treatment components\u003c\/li\u003e\n  \u003cli\u003eSchedule 80 PVC construction combines durability with resistance to common water treatment chemicals\u003c\/li\u003e\n  \u003cli\u003eOptimized side-by-side design fits seamlessly into compact commercial RO setups\u003c\/li\u003e\n  \u003cli\u003eSupports efficient system maintenance and reduces operational downtime\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQ \u0026amp; Safety\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this union compatible with other PVC pipe schedules?\u003c\/strong\u003e\u003cbr\u003eIt is designed specifically for Schedule 80 PVC pipes; using it with other schedules may compromise the seal and connection strength.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I inspect the union for leaks?\u003c\/strong\u003e\u003cbr\u003eRegular inspection during routine system maintenance is recommended, typically every 3–6 months depending on system usage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this union in outdoor or UV-exposed environments?\u003c\/strong\u003e\u003cbr\u003eWhile durable, prolonged UV exposure can degrade PVC; consider UV protection measures if installed outdoors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum pressure rating for this union?\u003c\/strong\u003e\u003cbr\u003eSchedule 80 PVC components generally handle higher pressures; verify your system specifications to ensure compatibility.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I reuse the union after disassembly?\u003c\/strong\u003e\u003cbr\u003eYes, the union is designed for multiple assembly and disassembly cycles, provided the O-ring and threads remain undamaged.\u003c\/p\u003e\n\n\u003cp\u003eUpgrade your system reliability today—add this 1\" Sch 80 PVC Union to your cart and keep your commercial RO water treatment system running smoothly with secure, leak-free connections.\u003c\/p\u003e\n\u003c!--WSP-MANUAL-LINK--\u003e\u003cdiv class=\"wsp-manual-box\" style=\"border:1px solid #e2e2e2;border-radius:8px;padding:12px;margin:14px 0;background:#f7fbff;\"\u003e\n\u003cstrong\u003e📖 Free Sic Advanced Reuse Manual (PDF)\u003c\/strong\u003e — owner's manual, installation \u0026amp; programming guide. \u003ca href=\"\/pages\/manual-sic-advanced-reuse\" rel=\"nofollow\"\u003e\u003cstrong\u003eDownload the manual →\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e","brand":"RYAN HERCO","offers":[{"title":"Default Title","offer_id":44819816742965,"sku":"780851339575","price":61.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/8001858633781_fixed.jpg?v=1790455738"},{"product_id":"pvc05ct-80s-sr-pvc-coupling-1-2-f-x-f-sch-80-stl-rfn-830-005srs","title":"PVC 1\/2 inch Schedule 80 Steel Reinforced Coupling Female x Female — PVC05CT-80S-SR, PVC Coupling, 1\/2 F x F SCH 80 Stl Rfn, 830-005SRS","description":"\u003cp\u003e\u003cstrong\u003eDurable PVC Coupling SCH 80 – Secure Your Water System with Reliable 1\/2\" F x F Connections\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen it comes to maintaining a high-performance water treatment setup, the strength and reliability of your plumbing components are critical. The PVC05CT-80S-SR PVC Coupling offers a heavy-duty, schedule 80 solution designed to withstand demanding commercial RO system environments. Engineered to provide a secure 1\/2\" female-to-female connection, this coupling ensures leak-resistant joins that keep your system running smoothly and efficiently.\u003c\/p\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eEnsures leak-proof connections to protect your water treatment system from downtime.\u003c\/li\u003e\n  \u003cli\u003eResists high pressure and temperature variations common in commercial RO setups.\u003c\/li\u003e\n  \u003cli\u003eConstructed from durable PVC and stainless steel reinforcement for long-lasting performance.\u003c\/li\u003e\n  \u003cli\u003eEasy to install, reducing maintenance time and labor costs.\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard 1\/2\" female fittings, enhancing system flexibility.\u003c\/li\u003e\n  \u003cli\u003eCorrosion-resistant materials extend component life in challenging water environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThis PVC coupling functions as a critical connector within water softening and commercial reverse osmosis (RO) systems. By securely joining two 1\/2\" female schedule 80 pipes, it maintains the integrity of the water flow path, preventing leaks and pressure loss. The SCH 80 rating indicates a thicker pipe wall, providing superior strength to handle elevated pressures commonly found in commercial water treatment operations.\u003c\/p\u003e\n\u003cp\u003eThe stainless steel reinforcement adds an extra layer of durability, ensuring the coupling withstands mechanical stresses and potential impacts, making it ideal for demanding industrial or commercial environments.\u003c\/p\u003e\n\n\u003ch2\u003eWhat to Expect\u003c\/h2\u003e\n\u003cp\u003eAfter installing the PVC05CT-80S-SR coupling, you will immediately notice a secure, stable connection within your water system that minimizes the risk of leaks. Over the first few days and weeks, its robust design helps maintain consistent water pressure and flow, supporting optimal system performance without interruptions.\u003c\/p\u003e\n\u003cp\u003eIn the long term, this coupling requires minimal maintenance due to its corrosion resistance and durable construction, allowing you to focus on system operation rather than frequent repairs or replacements.\u003c\/p\u003e\n\n\u003ch2\u003eWhat’s Inside\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePVC Body\u003c\/strong\u003e – Provides chemical resistance and structural strength for prolonged use in water systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSchedule 80 Wall Thickness\u003c\/strong\u003e – Ensures higher pressure tolerance and durability compared to standard pipes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStainless Steel Reinforcement\u003c\/strong\u003e – Adds mechanical strength and corrosion resistance, essential for commercial RO components.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1\/2\" Female Threads\u003c\/strong\u003e – Allows seamless integration with compatible commercial plumbing fixtures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eTurn off the water supply and depressurize the system before installation.\u003c\/li\u003e\n  \u003cli\u003eInspect the coupling and mating pipe ends to ensure they are clean and free of debris.\u003c\/li\u003e\n  \u003cli\u003eApply appropriate thread sealant or tape to the 1\/2\" female threads for leak prevention.\u003c\/li\u003e\n  \u003cli\u003eThread the coupling onto the corresponding male fittings by hand, then tighten securely with a wrench—avoid over-tightening to prevent damage.\u003c\/li\u003e\n  \u003cli\u003eRestore water supply slowly and check for leaks around the connection.\u003c\/li\u003e\n  \u003cli\u003eMonitor the joint during initial operation to confirm a stable, leak-free seal.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eWhy Choose This Product\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eManufactured with premium materials to ensure durability and resistance to harsh water treatment conditions.\u003c\/li\u003e\n  \u003cli\u003eTrusted vendor Water Softener Plus, known for quality commercial RO components and customer support.\u003c\/li\u003e\n  \u003cli\u003eDesigned specifically for commercial water systems, offering compatibility and performance tailored to professional applications.\u003c\/li\u003e\n  \u003cli\u003eRobust construction minimizes downtime and maintenance, saving time and operational costs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQ \u0026amp; Safety\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this coupling compatible with all 1\/2\" pipes?\u003c\/strong\u003e\u003cbr\u003eIt is designed for 1\/2\" female schedule 80 fittings commonly used in commercial water treatment systems. Verify pipe specifications before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this coupling handle high-pressure RO systems?\u003c\/strong\u003e\u003cbr\u003eYes, the schedule 80 rating and stainless steel reinforcement enable it to withstand elevated pressures typical in commercial RO applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I inspect or replace this coupling?\u003c\/strong\u003e\u003cbr\u003eRegular inspections during routine system maintenance are recommended. Replacement is typically only needed if physical damage or leaks occur.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs special training required to install this product?\u003c\/strong\u003e\u003cbr\u003eBasic plumbing knowledge and standard tools are sufficient for installation. Follow safety precautions and system shutdown procedures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used in outdoor or corrosive environments?\u003c\/strong\u003e\u003cbr\u003eThe corrosion-resistant materials make it suitable for many environments, but always assess site-specific conditions before use.\u003c\/p\u003e\n\n\u003cp\u003eUpgrade your system reliability today—add this durable PVC coupling to your cart and keep your water flowing clean and consistent with confidence.\u003c\/p\u003e","brand":"HARRINGTON PROCESS SOLUTIONS","offers":[{"title":"Default Title","offer_id":44819817300021,"sku":"780851339497","price":64.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/pvc05ct-80s-sr-r1200.jpg?v=1789609089"},{"product_id":"hi-impact-insert-coupling-1","title":"Hi-impact 1-inch insert coupling for pipes — Hi-Impact Insert Coupling 1\"","description":"\u003cp\u003eJoining two lengths of 1\" poly pipe is a basic but essential task, and the \u003cstrong\u003eAmerican Granby Hi-Impact 1\" Insert Coupling\u003c\/strong\u003e does it cleanly and reliably. With an insert x insert design molded from high-impact PVC, it accepts a 1\" poly or flexible line on each end, bridging two runs into one continuous, corrosion-proof connection that will not rust or seize over time.\u003c\/p\u003e\u003ch3\u003eSimple, durable pipe joining\u003c\/h3\u003e\u003cp\u003eInsert couplings are the workhorses of poly pipe systems, used to extend lines, repair breaks, and tie sections together quickly. Because this fitting is PVC, it will never rust or corrode, an advantage that pays off in buried lines, well systems, and water treatment plumbing where metal couplings can fail or fuse to surrounding fittings after years in the ground. The Hi-Impact formulation resists the cracking that can occur when poly pipe is forced over a barb.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1\" insert x insert coupling in Hi-Impact PVC\u003c\/li\u003e\n\u003cli\u003eJoins two lengths of 1\" poly or flexible pipe\u003c\/li\u003e\n\u003cli\u003eCorrosion-proof and rust-free construction\u003c\/li\u003e\n\u003cli\u003eImpact-resistant formulation resists installation cracking\u003c\/li\u003e\n\u003cli\u003eIdeal for extending, splicing, or repairing water lines\u003c\/li\u003e\n\u003cli\u003eLightweight and economical for high-volume use\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSlide a stainless clamp onto each pipe end before seating it fully over the coupling barbs, then tighten both clamps evenly for a secure, leak-free joint. Warming stiff poly pipe slightly with warm water can ease assembly in cold weather and reduce the force needed to seat the barb. After the system is pressurized, check both clamps and snug them if any weeping appears. For installers building or maintaining well, irrigation, or filtration systems, this Hi-Impact coupling is an inexpensive, dependable way to keep poly pipe runs connected and leak-free, whether you are running a new line or making a fast repair on an existing one.\u003c\/p\u003e\u003cp\u003eBecause couplings see heavy use in any poly pipe system, stocking several of these inexpensive, corrosion-proof fittings means you are always ready to extend a line or make a quick repair. Reliable and rust-free, the Hi-Impact 1\" coupling is a basic but indispensable part of well, irrigation, and water treatment plumbing. Whether you are splicing a long buried run or quickly patching a damaged section, this corrosion-proof coupling restores a continuous, leak-free line with nothing more than two clamps and a few minutes of work.\u003c\/p\u003e\u003c!--rel-sys-v1--\u003e\u003cdiv class=\"related-systems\"\u003e\n\u003ch3\u003eRelated Systems \u0026amp; Configurations\u003c\/h3\u003e\n\u003cp\u003eComparing options? These related commercial water-treatment systems are frequently viewed alongside this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hi-impact-female-elbow-1\"\u003eHi-impact 1-inch female elbow fitting — Hi-Impact Female Elbow 1\"\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hi-impact-male-adapter-1\"\u003eHi-impact 1-inch male pipe adapter — Hi-Impact Male Adapter 1\"\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hi-impact-female-adapter-1\"\u003eHi-Impact Female Adapter 1\"\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"American Granby","offers":[{"title":"Default Title","offer_id":45668816683061,"sku":"HI10C","price":42.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/hi07c-r1200.jpg?v=1789604346"},{"product_id":"guest-1-4-union-conn","title":"Guest 1\/4 Union Conn","description":"\u003cp\u003eJoining two lengths of 1\/4\" tubing is as simple as it gets with the John Guest 1\/4\" Union Connector from Reliance Worldwide Corporation. This straight push-fit coupling links two tube ends inline, restoring or extending a run without solder, clamps, or threading. It is a workhorse fitting in residential reverse osmosis and drinking-water filtration plumbing, and one of those parts experienced installers always keep a few of in the van.\u003c\/p\u003e\u003cp\u003eTubing inside filter cabinets often needs to be lengthened to reach a new component, repaired after an accidental cut, or rerouted around equipment added later. The union connector handles all three jobs with equal ease. Each end uses the John Guest collet-and-O-ring system, gripping the tube and sealing it the instant it is pushed home, with no special tooling required.\u003c\/p\u003e\u003ch3\u003eWhy Installers Reach For It\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConnection: Tube x Tube for inline 1\/4\" joins\u003c\/li\u003e\n\u003cli\u003eStraight union connector design with two push-fit ports\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant polypropylene body that won't scale or rust\u003c\/li\u003e\n\u003cli\u003eTool-free, demountable assembly for easy servicing\u003c\/li\u003e\n\u003cli\u003eMatched to standard 1\/4\" RO and filtration tubing\u003c\/li\u003e\n\u003cli\u003eReusable across multiple installations and repairs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTo make a connection, cut both tube ends square and free of burrs, since a clean cut is what lets the collet grip evenly and the O-ring seal fully. Then push each tube firmly into the connector until it seats past the collet, and tug gently to confirm the grip on both sides. Because polypropylene resists corrosion and the chemicals present in treated water, the connector holds up to continuous service inside an under-sink or whole-house setup. Should you ever need to take the line apart, press in the collet and the tube slides free undamaged, ready to reconnect. Reliable, reusable, and quick to install, this John Guest union connector keeps 1\/4\" water lines flowing leak-free year after year.\u003c\/p\u003e\u003cp\u003eKeeping a small assortment of these unions in your kit means you are never stuck mid-job when a tube is cut too short or a layout needs an unexpected splice. Because they integrate with the rest of the John Guest range, a single union can tie together tubing feeding filters, membranes, tanks, and faucets, all using the same tool-free push-fit method that makes the system so quick to build and service.\u003c\/p\u003e\u003c!--rel-sys-v1--\u003e\u003cdiv class=\"related-systems\"\u003e\n\u003ch3\u003eRelated Systems \u0026amp; Configurations\u003c\/h3\u003e\n\u003cp\u003eComparing options? These related commercial water-treatment systems are frequently viewed alongside this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-1-4-m-conn\"\u003eGuest 1\/4 M Conn\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-1-4-union-tee\"\u003eGuest 1\/4 Union Tee\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/john-guest-fiptx-tube-conn-1-4x1-4\"\u003eJohn Guest FIPTx Tube Conn., 1\/4x1\/4\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/john-guest-black-union-conn-3-4-cts\"\u003eJohn Guest Black Union Conn, 3\/4\" CTS\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"John Guest","offers":[{"title":"Default Title","offer_id":45668821172277,"sku":"JG02UC","price":44.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/8170118348853_fixed.jpg?v=1790455852"},{"product_id":"guest-3-8x1-4-r-union","title":"Guest 3\/8x1\/4 R Union","description":"\u003cp\u003eThe John Guest 3\/8\" x 1\/4\" Reducing Union from Reliance Worldwide Corporation joins two different tube sizes inline, letting a 3\/8\" line transition cleanly to a 1\/4\" line without threads or tools. It is a common fitting in water filtration and reverse osmosis systems, where supply and distribution tubing frequently differ in diameter and need a tidy, leak-free connection between them.\u003c\/p\u003e\u003cp\u003eMixed tubing sizes are routine in point-of-use treatment plumbing. The larger 3\/8\" line often carries the main supply for better flow, while 1\/4\" tubing feeds smaller components such as RO membranes, post-filters, or a drinking-water faucet. This reducing union bridges the two with a push-fit collet on each end, eliminating the need for stacked adapters and keeping the junction compact.\u003c\/p\u003e\u003ch3\u003eA Clean Size Transition\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConnection: Tube x Tube, 3\/8\" to 1\/4\"\u003c\/li\u003e\n\u003cli\u003eStraight reducing union for inline size changes\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant polypropylene construction\u003c\/li\u003e\n\u003cli\u003ePush-in assembly grips and seals each tube automatically\u003c\/li\u003e\n\u003cli\u003eDemountable for easy line servicing and reconfiguration\u003c\/li\u003e\n\u003cli\u003eReusable across multiple installs and repairs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eInstallation is quick. Cut both tubes square and free of burrs, then push the 3\/8\" tube into the larger port and the 1\/4\" tube into the smaller one, seating each fully past the collet. A gentle tug on each side confirms the grip, and the internal O-rings create a watertight seal at both ends automatically. Because polypropylene resists corrosion and the chemicals in treated water, the union holds up to continuous service without scaling or rusting. To disassemble for maintenance, depress the relevant collet and withdraw the tube undamaged, then reconnect when the work is finished. For reliable, reusable size transitions in residential water treatment, this John Guest reducing union is a dependable solution that keeps mixed-diameter runs neat and secure.\u003c\/p\u003e\u003cp\u003eKeeping a few reducing unions on hand makes mixed-size layouts far easier to plan, since you can run a larger supply line where flow matters and step down only where a component requires it. Combined with the rest of the John Guest range, this fitting helps you build a clean, interchangeable system that adapts as needs change, all without soldering, crimping, or specialized tools at any junction.\u003c\/p\u003e\u003c!--rel-sys-v1--\u003e\u003cdiv class=\"related-systems\"\u003e\n\u003ch3\u003eRelated Systems \u0026amp; Configurations\u003c\/h3\u003e\n\u003cp\u003eComparing options? These related commercial water-treatment systems are frequently viewed alongside this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-3-8x1-4-r-m-ell\"\u003eGuest 3\/8x1\/4 R M Ell\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-union-tee-3-8x3-8x1-4\"\u003eGuest Union Tee 3\/8x3\/8x1\/4\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-3-8x1-4-union-stem-x-tube\"\u003eGuest 3\/8x1\/4 Union, Stem x Tube\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-3-8x1-4-m-conn\"\u003eGuest 3\/8x1\/4 M Conn\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"John Guest","offers":[{"title":"Default Title","offer_id":45668821499957,"sku":"JG0302RU","price":46.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/guest-3-8x1-4-r-union-hires-r1200.jpg?v=1789603698"},{"product_id":"guest-3-8x1-4-union-stem-x-tube","title":"Guest 3\/8x1\/4 Union, Stem x Tube","description":"\u003cp\u003eThe John Guest 3\/8\" Stem x 1\/4\" Tube Union from Reliance Worldwide Corporation links a 3\/8\" stem to a 1\/4\" tube port, giving you a direct plug-in connection on one side and a standard push-fit tube grip on the other. It is a handy fitting for compact reverse osmosis and water filtration builds that need both a component connection and a tube run handled in a single piece.\u003c\/p\u003e\u003cp\u003eThe 3\/8\" stem end is meant to push directly into another John Guest fitting, while the 1\/4\" tube end accepts flexible tubing. This dual nature lets you connect a component and a tube run at once, cutting down on the number of joints in tight cabinet installations. Fewer joints means fewer potential leak points and a cleaner, more serviceable layout overall.\u003c\/p\u003e\u003ch3\u003ePlug-In Convenience\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConnection: Tube x Tube, 3\/8\" stem to 1\/4\" tube\u003c\/li\u003e\n\u003cli\u003eStem union mates directly with John Guest ports\u003c\/li\u003e\n\u003cli\u003ePolypropylene body resists corrosion and scale\u003c\/li\u003e\n\u003cli\u003ePush-fit tube side seats in seconds without tools\u003c\/li\u003e\n\u003cli\u003eFully demountable for easy servicing\u003c\/li\u003e\n\u003cli\u003eReduces junctions in space-limited installations\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTo install, push the 3\/8\" stem fully into the receiving fitting's collet until it bottoms out, then cut your 1\/4\" tube square and free of burrs and insert it into the tube port until it seats. The internal O-rings seal both connections automatically, and a gentle tug confirms the tube grip. The corrosion-resistant polypropylene construction holds up to years of contact with treated water without scaling or rusting. When it is time to service the system, depress the collets to release the stem and tube cleanly and undamaged, then reassemble once the work is done. For reliable size and connection transitions in residential water treatment plumbing, this John Guest stem union is a smart, space-saving pick.\u003c\/p\u003e\u003cp\u003eAs part of the wider John Guest range, this stem union works hand in hand with the elbows, tees, valves, and connectors that use the same collet system, so a complete layout can be assembled from interchangeable parts. The stem design in particular shines in crowded cabinets, where plugging a component straight into a mating fitting saves both space and an extra junction that could otherwise leak.\u003c\/p\u003e\u003c!--rel-sys-v1--\u003e\u003cdiv class=\"related-systems\"\u003e\n\u003ch3\u003eRelated Systems \u0026amp; Configurations\u003c\/h3\u003e\n\u003cp\u003eComparing options? These related commercial water-treatment systems are frequently viewed alongside this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-3-8x1-4-r-union\"\u003eGuest 3\/8x1\/4 R Union\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-union-tee-3-8x3-8x1-4\"\u003eGuest Union Tee 3\/8x3\/8x1\/4\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-4-x-1-4-tube-x-tube-union-elbow\"\u003e1\/4\" x 1\/4\" Tube x Tube Union Elbow\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-3-8x1-4-m-conn\"\u003eGuest 3\/8x1\/4 M Conn\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"John Guest","offers":[{"title":"Default Title","offer_id":45668821794869,"sku":"JG0302SU","price":54.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/guest-3-8x1-4-union-stem-x-tube-hires-r1200.jpg?v=1789603707"},{"product_id":"guest-3-8-union-conn","title":"Guest 3\/8 Union Conn","description":"\u003cp\u003eThe John Guest 3\/8\" Union Connector from Reliance Worldwide Corporation joins two 3\/8\" tubes inline, restoring or extending a run with a quick push of each tube end. It is one of the most useful fittings in any water filtration or reverse osmosis build, where tubing frequently needs to be lengthened, repaired, or rerouted as a system grows or is serviced.\u003c\/p\u003e\u003cp\u003eWhenever a tubing run is cut, needs to reach farther, or has to be rerouted around a newly added component, a union connector makes the join effortless. Each end uses the John Guest collet-and-O-ring system, gripping the tube and sealing it the moment it is pushed home, with no solder, clamps, or threading involved. That speed and simplicity is exactly why installers keep a stock of these on hand.\u003c\/p\u003e\u003ch3\u003eWhy It Earns Its Place\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConnection: Tube x Tube, both ends 3\/8\"\u003c\/li\u003e\n\u003cli\u003eStraight union connector for inline joins\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant polypropylene construction\u003c\/li\u003e\n\u003cli\u003ePush-in collets grip and seal each tube automatically\u003c\/li\u003e\n\u003cli\u003eTool-free and fully demountable\u003c\/li\u003e\n\u003cli\u003eReusable across repairs and reconfigurations\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTo make a connection, cut both tube ends square and free of burrs, since a clean, square cut is what lets the collet grip evenly and the O-ring seal completely. Then push each tube fully into the connector until it bottoms out past the collet, and tug gently to confirm the grip on both sides. The corrosion-resistant polypropylene body stands up to continuous contact with treated water without scaling or rusting, so the joint stays reliable over the long term. If you ever need to take the line apart, press in the collet and the tube slides free undamaged, ready to reconnect. Reliable, reusable, and matched to standard 3\/8\" treatment tubing, this John Guest union connector keeps your water lines flowing leak-free through every repair and expansion.\u003c\/p\u003e\u003cp\u003eStocking a handful of these unions means a cut or short tube never stalls a job. Because they integrate with the rest of the John Guest range, a single union can splice together tubing feeding filters, membranes, tanks, and faucets, all using the same tool-free push-fit method. That interchangeability is what makes the system so quick to build, expand, and service over the years.\u003c\/p\u003e\u003c!--rel-sys-v1--\u003e\u003cdiv class=\"related-systems\"\u003e\n\u003ch3\u003eRelated Systems \u0026amp; Configurations\u003c\/h3\u003e\n\u003cp\u003eComparing options? These related commercial water-treatment systems are frequently viewed alongside this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-3-8-m-conn\"\u003eGuest 3\/8 M Conn\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-3-8-union-tee\"\u003eGuest 3\/8 Union Tee\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/john-guest-fnpt-x-tube-conn-3-8-x-3-8\"\u003eJohn Guest FNPT x Tube Conn. 3\/8 x 3\/8\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-1-2-x-3-8-reducing-union\"\u003eGuest 1\/2 x 3\/8 Reducing Union\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"John Guest","offers":[{"title":"Default Title","offer_id":45668822581301,"sku":"JG03UC","price":46.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/8170119495733_fixed.jpg?v=1790455867"},{"product_id":"guest-1-2-x-3-8-reducing-union","title":"Guest 1\/2 x 3\/8 Reducing Union","description":"\u003cp\u003eThe John Guest 1\/2\" x 3\/8\" Reducing Union from Reliance Worldwide Corporation joins a 1\/2\" tube to a 3\/8\" tube inline, transitioning cleanly between two line sizes without tools or threads. It is well suited to larger filtration and water conditioning installations that mix tubing diameters, providing a tidy, leak-free bridge between a higher-flow supply line and smaller distribution tubing.\u003c\/p\u003e\u003cp\u003eWhole-house and higher-flow point-of-use systems often run 1\/2\" supply tubing that must step down to 3\/8\" for certain components, valves, or downstream runs. This reducing union handles that transition in a single fitting, using a push-fit collet on each end to grip and seal the respective tube sizes. Combining the size change into one body avoids stacked adapters and keeps the junction compact.\u003c\/p\u003e\u003ch3\u003eBridging Two Sizes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConnection: Tube x Tube, 1\/2\" to 3\/8\"\u003c\/li\u003e\n\u003cli\u003eStraight reducing union for inline size changes\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant polypropylene construction\u003c\/li\u003e\n\u003cli\u003ePush-in assembly grips and seals each tube automatically\u003c\/li\u003e\n\u003cli\u003eDemountable for easy servicing and rework\u003c\/li\u003e\n\u003cli\u003eReusable across installs and repairs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTo install, cut both tubes square and free of burrs, then push the 1\/2\" tube into the larger port and the 3\/8\" tube into the smaller one, seating each fully past the collet. A gentle tug on each side confirms the grip, and the internal O-rings create watertight seals at both ends automatically. Because polypropylene resists corrosion and the chemicals in treated water, the union holds up to continuous service without scaling or rusting, even in the larger flows typical of these systems. When servicing is needed, depress the appropriate collet and withdraw the tube undamaged, then reconnect once the work is complete. For reliable, reusable size transitions in residential and light-commercial water treatment plumbing, this John Guest reducing union is a dependable solution that keeps mixed-diameter runs neat and secure.\u003c\/p\u003e\u003cp\u003eWithin the John Guest range, this reducing union pairs naturally with the larger 1\/2\" fittings as well as the 3\/8\" components that share the same collet system, so a layout that mixes sizes stays fully interchangeable. Running a larger supply line where flow matters and reducing only where a component requires it is a smart design approach, and this union makes that transition clean, quick, and entirely tool-free.\u003c\/p\u003e\u003c!--rel-sys-v1--\u003e\u003cdiv class=\"related-systems\"\u003e\n\u003ch3\u003eRelated Systems \u0026amp; Configurations\u003c\/h3\u003e\n\u003cp\u003eComparing options? These related commercial water-treatment systems are frequently viewed alongside this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/parker-3-8-x-1-4-reducing-union\"\u003eParker 3\/8\" x 1\/4\" Reducing Union\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/drain-male-elbow-3-8-x-1-2\"\u003eDrain Male Elbow 3\/8\" x 1\/2\"\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-stemxm-adap-3-8-x-1-4\"\u003eGuest StemxM Adap, 3\/8 x 1\/4\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-3-8-union-conn\"\u003eGuest 3\/8 Union Conn\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"John Guest","offers":[{"title":"Default Title","offer_id":45668822974517,"sku":"JG0503RU","price":49.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/guest-1-2-x-3-8-reducing-union-hires-r1200.jpg?v=1789603548"},{"product_id":"guest-1-2-bulkhd-union","title":"Guest 1\/2 Bulkhd Union","description":"\u003cp\u003eThe John Guest 1\/2\" Bulkhead Union from Reliance Worldwide Corporation is designed to pass a water line cleanly through a panel, tank wall, or equipment enclosure while sealing tightly around the opening. With push-fit 1\/2\" tube ports on both sides, it makes through-wall connections fast and leak-free, eliminating the messy improvisations that drilled pass-throughs often invite.\u003c\/p\u003e\u003cp\u003eBulkhead fittings are essential whenever tubing must penetrate a barrier, such as the wall of a storage tank, a cabinet panel, or a filtration housing enclosure. The fitting mounts in a drilled hole and secures with a retaining nut, providing a stable, sealed pass-through for the line. This keeps the penetration neat and prevents leaks at the very point where they are hardest to fix later.\u003c\/p\u003e\u003ch3\u003eWhere It Excels\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConnection: Tube x Tube, both ends 1\/2\"\u003c\/li\u003e\n\u003cli\u003eBulkhead union for panel and tank-wall pass-throughs\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant polypropylene construction\u003c\/li\u003e\n\u003cli\u003ePush-in collets on both sides for tool-free tube connection\u003c\/li\u003e\n\u003cli\u003eDemountable for servicing without removing the bulkhead\u003c\/li\u003e\n\u003cli\u003eProvides a stable, sealed anchor point for the line\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTo install, drill the appropriate hole in the panel, mount the bulkhead body, and tighten the retaining nut to secure and seal it against the surface. Then cut your 1\/2\" tubing square and free of burrs and push it into the collet on each side until it bottoms out. The internal O-rings seal each tube connection while the bulkhead itself seals against the panel, so both the wall penetration and the tube joints stay watertight. The corrosion-resistant polypropylene construction holds up to continuous contact with treated water without scaling or rusting. Because the tube connections are demountable, you can service the line on either side without disturbing the mounted bulkhead. For organized, reliable through-wall plumbing in water treatment and storage applications, this John Guest bulkhead union is a robust, professional choice.\u003c\/p\u003e\u003cp\u003eWithin the John Guest range, this bulkhead union works alongside the unions, elbows, tees, and valves that share the same collet system, so tubing on either side of a panel can connect to the rest of a layout using familiar push-fit parts. For tank and enclosure builds, having a dedicated, properly sealed pass-through is far more reliable than improvised grommets, and it gives the finished installation a clean, professional appearance.\u003c\/p\u003e\u003c!--rel-sys-v1--\u003e\u003cdiv class=\"related-systems\"\u003e\n\u003ch3\u003eRelated Systems \u0026amp; Configurations\u003c\/h3\u003e\n\u003cp\u003eComparing options? These related commercial water-treatment systems are frequently viewed alongside this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-1-2-x-3-8-reducing-union\"\u003eGuest 1\/2 x 3\/8 Reducing Union\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-1-4-union-conn\"\u003eGuest 1\/4 Union Conn\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-1-4-union-tee\"\u003eGuest 1\/4 Union Tee\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/parker-1-2-bulkhead-union\"\u003eParker 1\/2\" Bulkhead Union\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"John Guest","offers":[{"title":"Default Title","offer_id":45668823040053,"sku":"JG05BU","price":61.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/8170119790645_fixed.jpg?v=1790455872"},{"product_id":"parker-1-4-union-connector","title":"Parker 1\/4\" Union Connector","description":"\u003cp\u003eNeed to join two runs of 1\/4\" tubing in a straight line? The Parker 1\/4\" Union Connector does exactly that, splicing tube to tube with a secure push-to-connect grip on each end. Built by Parker Hannifin from tough POM polymer, this small but essential fitting weighs only 0.01 lbs yet provides a dependable, watertight junction for residential and light-commercial water systems. It is the kind of unassuming part that keeps a filtration setup running smoothly for years.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTube x tube straight union for inline connections\u003c\/li\u003e\n\u003cli\u003ePOM polymer construction for corrosion and chemical resistance\u003c\/li\u003e\n\u003cli\u003eSize: 1\/4\" x 1\/4\" inch on both ports\u003c\/li\u003e\n\u003cli\u003ePush-to-connect collets grip the tube without tools\u003c\/li\u003e\n\u003cli\u003eIdeal for extending or repairing existing 1\/4\" lines\u003c\/li\u003e\n\u003cli\u003eReusable design simplifies future modifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUnion connectors are among the most-used components in any quick-connect plumbing kit. They let you lengthen a tubing run, repair a damaged section, or transition between two fixtures without cutting into permanent fittings. Inside reverse-osmosis systems, refrigerator water lines, ice-maker feeds, and small filtration loops, a clean inline splice keeps flow smooth and pressure steady. Because the body is molded from acetal polymer, it shrugs off the corrosion that would eventually plague a metal coupling in a damp under-sink environment.\u003c\/p\u003e\u003cp\u003eInstallation is straightforward: trim each tube end square, clear any burrs, and press the tubing firmly into both sides until it seats against the internal seal. The collet automatically locks the tube in place, and a gentle pull confirms the joint is holding under pressure. When you need to take the line apart, depress the release ring and the tube slides out cleanly, leaving the fitting ready to reuse on the next job. The Parker name assures consistent tolerances and long service life, making this union connector a smart staple to keep stocked in any installer's or DIYer's water-treatment parts bin.\u003c\/p\u003e\u003cp\u003eFor dependable performance, always use tubing that matches the fitting's nominal size and is rated for your line pressure and water temperature. Pairing this union connector with quality 1\/4\" tubing yields a connection you can trust under continuous household use, with no special skills or plumbing experience required to achieve a professional, leak-free result.\u003c\/p\u003e\u003c!--rel-sys-v1--\u003e\u003cdiv class=\"related-systems\"\u003e\n\u003ch3\u003eRelated Systems \u0026amp; Configurations\u003c\/h3\u003e\n\u003cp\u003eComparing options? These related commercial water-treatment systems are frequently viewed alongside this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/parker-1-4-union-tee\"\u003eParker 1\/4\" Union Tee\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/parker-1-4-tube-x-1-4-male-connector\"\u003eParker 1\/4\" Tube x 1\/4\" Male Connector\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/parker-3-8-x-1-4-reducing-union\"\u003eParker 3\/8\" x 1\/4\" Reducing Union\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-1-4-union-conn\"\u003eGuest 1\/4 Union Conn\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Parker Hannifin","offers":[{"title":"Default Title","offer_id":45668825169973,"sku":"LQ02UC","price":43.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/parker-1-4-union-connector-hires-r1200.jpg?v=1789607083"},{"product_id":"parker-3-8-x-1-4-reducing-union","title":"Parker 3\/8\" x 1\/4\" Reducing Union","description":"\u003cp\u003eTransitioning between two different tube sizes is effortless with the Parker 3\/8\" x 1\/4\" Reducing Union. This compact POM polymer fitting accepts 3\/8\" tubing on one end and 1\/4\" tubing on the other, letting you step a line down (or up) without adapters or improvised workarounds. From Parker Hannifin, it carries the brand's hallmark precision and weighs a mere 0.02 lbs, making it an easy addition to any quick-connect plumbing project.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTube x tube reducing union joins 3\/8\" to 1\/4\" lines\u003c\/li\u003e\n\u003cli\u003ePOM polymer body for chemical and corrosion resistance\u003c\/li\u003e\n\u003cli\u003ePush-to-connect ports on both ends for tool-free assembly\u003c\/li\u003e\n\u003cli\u003eSmooth internal bore keeps flow restriction minimal\u003c\/li\u003e\n\u003cli\u003eReusable collets simplify future modifications\u003c\/li\u003e\n\u003cli\u003eSize: 3\/8\" x 1\/4\" inch\u003c\/li\u003e\n\u003cli\u003eReduces leak points by eliminating stacked adapter fittings\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eReducing unions solve a common plumbing puzzle: connecting components rated for different tubing diameters. In water-treatment setups this comes up frequently, such as stepping a 3\/8\" feed down to a 1\/4\" inlet on an RO membrane housing, post-filter, or dispensing faucet. Rather than stacking multiple fittings together and creating extra joints that could leak, a single reducing union keeps the junction clean, compact, and dependable.\u003c\/p\u003e\u003cp\u003eFitting it is the same simple push-to-connect process Parker is known for. Square off and deburr each tube end, then insert each into its matching port until fully seated against the O-ring seal. The collet grips automatically and holds firm under system pressure, and a light tug confirms the connection is secure. To release, depress the collet ring and withdraw the tube; the fitting is then ready to use again. With its acetal construction resisting corrosion and scaling in wet environments, this reducing union is a dependable, space-saving choice for residential and light-commercial filtration work where mixed tube sizes meet.\u003c\/p\u003e\u003cp\u003eTo get the most from this fitting, confirm that both your 3\/8\" and 1\/4\" tubing are rated for the line pressure and temperature in your system, and that each end is cut cleanly for a proper seal. With those basics in place, this reducing union quietly bridges two tube sizes for years, keeping your installation compact and dependable. In short, it is a quiet problem-solver that keeps mixed-size tubing runs clean, compact, and dependable throughout your installation.\u003c\/p\u003e\u003c!--rel-sys-v1--\u003e\u003cdiv class=\"related-systems\"\u003e\n\u003ch3\u003eRelated Systems \u0026amp; Configurations\u003c\/h3\u003e\n\u003cp\u003eComparing options? These related commercial water-treatment systems are frequently viewed alongside this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-1-2-x-3-8-reducing-union\"\u003eGuest 1\/2 x 3\/8 Reducing Union\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/parker-90-ball-valve-1-4-nptf-x-3-8t\"\u003eParker 90° Ball Valve, 1\/4\" NPTF x 3\/8\"T\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/guest-stemxm-adap-3-8-x-1-4\"\u003eGuest StemxM Adap, 3\/8 x 1\/4\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/parker-reducing-union-tee-3-8x3-8x1-4\"\u003eParker Reducing Union Tee 3\/8x3\/8x1\/4\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Parker Hannifin","offers":[{"title":"Default Title","offer_id":45668825464885,"sku":"LQ0302RU","price":45.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/parker-3-8-x-1-4-reducing-union-hires-r1200.jpg?v=1789607121"},{"product_id":"3-8-union-qc-y-connector","title":"3\/8 Union QC \"Y\" Connector","description":"\u003cp\u003eSplit a 3\/8\" line into two with the smooth-flowing geometry of the 3\/8\" Union QC \"Y\" Connector from Parker Hannifin. Unlike a sharp-angled tee, the Y-shaped body divides flow at a gentler angle, helping reduce turbulence and pressure loss where balanced distribution matters. Molded from durable POM polymer, this quick-connect fitting weighs just 0.03 lbs and installs in seconds, making it a refined choice for thoughtfully designed water-treatment plumbing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThree equal 3\/8\" x 3\/8\" x 3\/8\" push-to-connect ports\u003c\/li\u003e\n\u003cli\u003eY-body design promotes smoother, lower-turbulence branching\u003c\/li\u003e\n\u003cli\u003eTube x tube x tube connections throughout\u003c\/li\u003e\n\u003cli\u003ePOM polymer construction resists corrosion and chemicals\u003c\/li\u003e\n\u003cli\u003eTool-free assembly with reusable locking collets\u003c\/li\u003e\n\u003cli\u003eEqual porting for even flow to both branches\u003c\/li\u003e\n\u003cli\u003eReusable collets allow easy reconfiguration as needs change\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe Y connector is a favorite for situations where you want to feed two outlets from a single source while keeping flow as even as possible, such as supplying parallel filter cartridges, branching a product-water line, or distributing across small water-treatment manifolds. Its rounded transition is gentler on flow than a square tee, which can be a meaningful advantage in low-pressure setups where every bit of preserved pressure helps downstream devices perform their best.\u003c\/p\u003e\u003cp\u003eTo put it to work, square and deburr each 3\/8\" tube end, then press each into its port until it bottoms out against the internal seal. The collets grip automatically and lock the tubes under pressure, while a gentle pull verifies each joint is holding. Removal is equally simple: press the collet ring and pull the tube out, leaving the fitting ready to reuse. Because the body is molded from acetal polymer, it resists the corrosion and mineral scaling that can compromise metal fittings over time. Reliable Parker engineering ensures a consistent, leak-free fit for residential and light-commercial filtration plumbing.\u003c\/p\u003e\u003cp\u003eFor best performance, match your tubing to the fitting's 3\/8\" size and ensure it is rated for your system's pressure and temperature. Used alongside other Parker quick-connect components, this Y connector helps you build tidy, low-restriction branches that keep water flowing smoothly to every outlet in your filtration setup. From new RO builds to upgrades of existing filtration loops, this Y connector earns a permanent place in any quick-connect parts kit. Its gentle, low-turbulence geometry makes it a thoughtful upgrade over a standard square tee wherever preserving flow and pressure matters to downstream devices.\u003c\/p\u003e","brand":"Parker Hannifin","offers":[{"title":"Default Title","offer_id":45668825563189,"sku":"LQ030303UYC","price":47.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/8170121723957_fixed.jpg?v=1790455879"},{"product_id":"parker-1-2-bulkhead-union","title":"Parker 1\/2\" Bulkhead Union","description":"\u003cp\u003eMount a tubing connection through a panel, tank wall, or enclosure with the Parker 1\/2\" Bulkhead Union. This fitting passes through a drilled hole and locks in place, providing a secure 1\/2\" tube-to-tube pass-through with a clean, finished appearance on both sides. Built by Parker Hannifin from durable POM polymer, it weighs 0.07 lbs and resists the corrosion that plagues metal fittings in wet environments, making it ideal for the demanding conditions found around water-treatment equipment.\u003c\/p\u003e\u003ch3\u003eThrough-Wall Connections\u003c\/h3\u003e\u003cp\u003eBulkhead unions are the right tool whenever a line must cross a barrier, such as the wall of a storage tank, a filter cabinet, an equipment panel, or an enclosure. The threaded body and retaining nut clamp firmly to the panel, keeping the connection stable and preventing the tubing from pulling through or wobbling under pressure. On both faces, the push-to-connect ports accept 1\/2\" tubing without tools, so you get a tidy, professional pass-through on each side of the wall.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTube x tube bulkhead union for panel pass-through\u003c\/li\u003e\n\u003cli\u003eSize: 1\/2\" on both quick-connect ports\u003c\/li\u003e\n\u003cli\u003ePOM polymer construction resists corrosion and scaling\u003c\/li\u003e\n\u003cli\u003eRetaining nut secures the fitting to a wall or panel\u003c\/li\u003e\n\u003cli\u003ePush-to-connect design needs no wrenches or sealant\u003c\/li\u003e\n\u003cli\u003eClean, professional appearance on both sides\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTo install, drill the appropriate hole size in your panel or tank wall, insert the bulkhead body, and tighten the retaining nut to lock it firmly in place. Then square and deburr each 1\/2\" tube end and press it into the ports on either side until seated against the internal stop. The collets grip automatically and hold under pressure, and a gentle pull confirms each side is secure. To release a tube later, press the collet ring inward and withdraw it. With Parker's trusted engineering and corrosion-resistant acetal construction, this bulkhead union delivers a neat, leak-resistant pass-through for residential and light-commercial water-treatment systems.\u003c\/p\u003e\u003cp\u003eFor a lasting installation, drill the mounting hole precisely and make sure the panel or tank wall is sound where the bulkhead clamps. Done correctly, this fitting gives you a stable, professional pass-through that keeps tubing organized on both sides of the barrier and stands up to years of continuous water-treatment service.\u003c\/p\u003e","brand":"Parker Hannifin","offers":[{"title":"Default Title","offer_id":45668825989173,"sku":"LQ05BU","price":54.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/parker-1-2-bulkhead-union-hires-r1200.jpg?v=1789607046"},{"product_id":"pvc-coupling-1-2-s-x-s-schedule-80","title":"PVC Coupling, 1\/2 S x S Schedule 80","description":"\u003cp\u003eThis Harrington Process Solutions Schedule 80 PVC coupling joins two 1\/2\" slip (socket) ends, providing a clean, solvent-welded way to connect or extend 1\/2\" PVC pipe in water-treatment and process plumbing. The Schedule 80 wall thickness gives it extra strength and pressure capacity compared with lighter Schedule 40 couplings, making it the right choice when a job calls for a stronger, more durable joint that will stand up to higher pressures or more demanding service.\u003c\/p\u003e\u003ch3\u003eA fundamental fitting\u003c\/h3\u003e\u003cp\u003eCouplings are among the most-used fittings in any plumbing assembly, letting you splice straight runs, repair a cut line, or join pipe sections during a build. The slip-by-slip design means both ends are solvent-welded for a permanent, leak-resistant bond, and the inert PVC material resists corrosion as well as the chlorine, salt brine, and dissolved minerals common in treated water. It is the kind of unglamorous but essential part that quietly keeps a clean installation looking and performing its best for years, doing its job without ever drawing attention.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCoupling, 1\/2\" slip x slip\u003c\/li\u003e\n\u003cli\u003eSchedule 80 PVC construction for higher strength\u003c\/li\u003e\n\u003cli\u003eSolvent-weld sockets on both ends\u003c\/li\u003e\n\u003cli\u003eCorrosion- and chemical-resistant\u003c\/li\u003e\n\u003cli\u003eApproximately 0.07 lbs each\u003c\/li\u003e\n\u003cli\u003eSuited to higher-pressure process and filtration plumbing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTo install, cut the pipe square and deburr the edge, then dry-fit to confirm alignment before committing to cement so you are not fighting a crooked joint as it sets. Clean and prime both mating surfaces, apply PVC solvent cement, and seat the pipe fully with a slight twist, holding briefly while the cement grabs. Allow the joint to cure fully before pressurizing the line, and always verify that the finished assembly meets your system's pressure and temperature ratings. A small but reliable building block for durable PVC plumbing in filtration and process systems, this Schedule 80 coupling is exactly the part to reach for when strength and longevity matter. Strong, corrosion-resistant, and simple to install correctly, this Schedule 80 coupling is the dependable joint to reach for whenever longevity and pressure capacity matter. A few in the kit means you are always prepared to splice or extend a 1\/2-inch run. Inexpensive enough to keep in quantity, it is the kind of fitting that prevents a stalled job over a single missing connector.\u003c\/p\u003e\u003c!--rel-sys-v1--\u003e\u003cdiv class=\"related-systems\"\u003e\n\u003ch3\u003eRelated Systems \u0026amp; Configurations\u003c\/h3\u003e\n\u003cp\u003eComparing options? These related commercial water-treatment systems are frequently viewed alongside this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pvc-bush-sch-80-1-2-s-x-3-8-fipt\"\u003ePVC Bush, Sch 80, 1\/2\" S x 3\/8\" Fipt — PVC0503STB-80\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pvc-bush-sch-80-1-2-s-x-3-8-fipt-1\"\u003ePVC Bush, Sch 80, 1\/2\" S x 3\/8\" Fipt — PVC0503STB\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pvc-ball-valve-1-s-x-s\"\u003ePVC Ball Valve 1\" S x S\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pvc-pipe-1-1-2-schedule-40\"\u003ePVC Pipe, 1-1\/2 Schedule 40\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Harrington Process Solutions","offers":[{"title":"Default Title","offer_id":45668840177717,"sku":"PVC05C-80","price":51.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/pvc-coupling-1-2-s-x-s-schedule-80-hires-r1200.jpg?v=1789608885"},{"product_id":"pvc-coupling-3-4-fipt-x-fipt","title":"PVC Coupling, 3\/4 Fipt x Fipt","description":"\u003cp\u003eA reliable joint between two threaded 3\/4\" lines starts with the right coupling, and this American Granby PVC coupling delivers a clean FIPT x FIPT connection for water-treatment and general plumbing runs. Both ends are female iron pipe threads, so you can join two male-threaded pipe sections or screw-in components without cementing anything. That threaded design makes it a natural fit anywhere you want a connection you can take apart again, an in-line spot you may need to break loose later for cleaning, cartridge swaps, or seasonal maintenance on a softener or filter.\u003c\/p\u003e\u003ch3\u003eCorrosion-proof and serviceable\u003c\/h3\u003e\u003cp\u003eBuilt from durable Schedule 40 PVC, this coupling resists the rust, scale, and chemical attack that shorten the life of metal fittings in treated and chlorinated water. There is no internal corrosion to narrow the bore over time and no galvanic concern when tying into other plastic components. Because the fitting itself contributes no scale or rust to the water passing through it, it is well suited to the clean-water requirements of residential and light-commercial treatment plumbing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConnection: 3\/4\" FIPT x FIPT (female threads both ends)\u003c\/li\u003e\n\u003cli\u003eFitting type: threaded coupling\u003c\/li\u003e\n\u003cli\u003eMaterial: durable Schedule 40 PVC\u003c\/li\u003e\n\u003cli\u003eJoins two male-threaded 3\/4\" lines or fittings\u003c\/li\u003e\n\u003cli\u003eServiceable, unscrews for future maintenance\u003c\/li\u003e\n\u003cli\u003eApproximate weight: 0.60 lb each\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor a leak-free seal, wrap the male threads of each mating part with PTFE tape or apply a quality pipe thread sealant before hand-tightening, then snug the joint an extra turn or two with a wrench, taking care not to crack the plastic by over-tightening. Verify the connection under pressure before closing up any access panel. American Granby is a well-known supplier of waterworks and pump-system components, and this 3\/4\" coupling is a dependable, economical choice for tying together threaded sections of treated-water plumbing in homes and light-commercial installations alike.\u003c\/p\u003e\u003cp\u003eOne reason PVC dominates water-treatment plumbing is its predictable, repeatable behavior across thousands of identical joints. Every fitting shares the same chemistry and dimensional standards, so an installer can stock a single solvent and primer and trust that each connection performs the same way. That consistency, combined with immunity to rust and scale, is why softener, filter, and distribution skids are so often built almost entirely from PVC components like this one.\u003c\/p\u003e\u003c!--rel-sys-v1--\u003e\u003cdiv class=\"related-systems\"\u003e\n\u003ch3\u003eRelated Systems \u0026amp; Configurations\u003c\/h3\u003e\n\u003cp\u003eComparing options? These related commercial water-treatment systems are frequently viewed alongside this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pvc-coupling-3-4-sxs\"\u003ePVC Coupling, 3\/4 SxS\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pvc-bush-3-4x1-4-mipt-x-fipt\"\u003ePVC Bush, 3\/4x1\/4 Mipt x Fipt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pvc-bushing-sxf-1-x-3-4\"\u003ePVC Bushing, SxF 1 x 3\/4\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pvc-bushing-1-2-mipt-x-1-4-fipt\"\u003ePVC Bushing, 1\/2 Mipt x 1\/4 Fipt\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"American Granby","offers":[{"title":"Default Title","offer_id":45668840472629,"sku":"PVC07CT","price":43.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/pvc-coupling-3-4-fipt-x-fipt-hires-r1200.jpg?v=1789608894"},{"product_id":"pvc-coupling-sxs-1","title":"PVC Coupling, SxS 1","description":"\u003cp\u003eJoining two lengths of 1\" PVC pipe is one of the most basic moves in any plumbing run, and this American Granby slip x slip coupling makes it permanent and leak-free. Both ends are slip sockets that solvent-weld directly to Schedule 40 pipe, chemically fusing the joint into a single continuous run that is as strong as the pipe itself.\u003c\/p\u003e\u003ch3\u003eThe workhorse of straight-line PVC\u003c\/h3\u003e\u003cp\u003eSlip couplings are the foundation of straight-line PVC plumbing. Use them to extend a run, splice in a repair section, or connect pipe to other slip-end fittings in a softener or filtration manifold. Because the solvent-weld bond chemically welds the pipe and fitting together rather than relying on threads or compression, a properly made joint will not loosen, back off, or weep over time the way a mechanical connection sometimes can. That makes the slip coupling the default choice anywhere you want a permanent, maintenance-free connection.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConnection: 1\" slip socket x slip socket\u003c\/li\u003e\n\u003cli\u003eFitting type: coupling\u003c\/li\u003e\n\u003cli\u003eMaterial: Schedule 40 PVC\u003c\/li\u003e\n\u003cli\u003ePermanently joins two 1\" pipe sections\u003c\/li\u003e\n\u003cli\u003eSolvent-weld for a sealed, pressure-rated joint\u003c\/li\u003e\n\u003cli\u003eLight at about 0.07 lb each\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor best results, cut the pipe square, deburr the edges, and wipe both surfaces clean before applying PVC primer followed by cement to both the pipe and the socket. Push the pipe fully home with a slight twist to spread the cement evenly, then hold the joint briefly while the bond sets. The corrosion resistance and smooth bore of PVC keep treated water flowing cleanly with no rust contributed by the fitting and no internal scaling to restrict the line. Dependable and economical, this American Granby coupling is a staple for residential and light-commercial water-treatment plumbing.\u003c\/p\u003e\u003cp\u003eBecause PVC will not corrode internally, the inside diameter stays clean and full-bore for the life of the line, preserving the flow and pressure that metal pipe loses to scale and rust over the years. That matters in water-treatment plumbing, where consistent flow keeps softeners and filters operating within their design range. Pair this fitting with quality pipe, proper primer and cement, and clean, square cuts, and it will deliver dependable, leak-free service for the long term.\u003c\/p\u003e","brand":"American Granby","offers":[{"title":"Default Title","offer_id":45668840964149,"sku":"PVC10C","price":15.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/pvc-coupling-sxs-1-hires-r1200.jpg?v=1789608902"},{"product_id":"park-qc-1-female-union-x-hose-barb","title":"Park QC 1\" Female Union X Hose Barb","description":"\u003cp\u003eThe Pentair Park Quick Connect 1\" Female Union x Hose Barb is a versatile manifold fitting built for exchange tank water-treatment systems. It combines a 1-inch female union quick-connect end with a 1-inch hose barb, giving you a single component that joins flexible tubing to a quick-connect manifold while the union feature allows the connection to be broken and remade cleanly during service.\u003c\/p\u003e\u003cp\u003eThe female union design is what sets this fitting apart from a simple barb connector. Unions permit a section of plumbing to be disconnected and reassembled without disturbing the rest of the manifold, which is invaluable in tank-exchange programs where treatment tanks are routinely rotated out and replaced. Combined with Park's tool-free quick-connect action, it keeps service calls fast and connections dependable, allowing a technician to isolate just the part of the assembly that needs attention.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePentair Park manifold quick-connect fitting\u003c\/li\u003e\n\u003cli\u003e1\" female union quick connect for serviceable connections\u003c\/li\u003e\n\u003cli\u003e1\" hose barb for flexible tubing\u003c\/li\u003e\n\u003cli\u003eTool-free connect and disconnect\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for exchange tanks\u003c\/li\u003e\n\u003cli\u003eLightweight at about 0.10 lbs each\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe hose barb end secures reinforced tubing, typically with a clamp, while the female union end mates with the corresponding male quick-connect components in the Park family. This makes the fitting a key element when assembling or repairing the flow paths of exchange-tank deionization and softening systems, particularly at junctions that need to be opened periodically. As part of Pentair's standardized Park manifold line, it integrates seamlessly with other quick-connect adapters and barbs, so you can build flexible, serviceable layouts to match almost any tank arrangement. The union joint also makes future maintenance simpler, since components can be separated without cutting tubing or disturbing adjacent connections. Offering reliable, efficient service connections for portable water-treatment installations, the Pentair Park 1\" Female Union x Hose Barb is a smart choice for any exchange-tank manifold.\u003c\/p\u003e\u003cp\u003eFor a dependable connection, seat the tubing fully on the barb and secure it with a suitable clamp, then make sure the union end is properly engaged before pressurizing. As a standardized Park component, it is easy to source and stock, helping your exchange-tank service program stay equipped with the serviceable, leak-resistant connectors it relies on. Versatile and serviceable, it is a smart addition to any portable treatment manifold.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":45668845715509,"sku":"RTA-UHB100","price":107.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/park-qc-1-female-union-x-hose-barb-hires-r1200.jpg?v=1789607019"},{"product_id":"sea-tech-union-cnctr-1-2-copper-tube","title":"Sea Tech Union Cnctr 1\/2 Copper Tube","description":"\u003cp\u003eJoin two lengths of 1\/2-inch CTS tubing instantly with the Sea Tech Union Connector (ST05UC) from Watts Water Technologies. This straight push-to-connect coupling links tubing end to end with no tools, no solder, and no glue, making it one of the simplest and fastest ways to extend a run or repair a cut line in plumbing and water-treatment systems where speed and reliability both matter.\u003c\/p\u003e\u003cp\u003eAt the heart of every Sea Tech AquaLock fitting is a corrosion-resistant stainless steel gripper ring that securely grabs and holds the tubing. The beauty of the design is its material flexibility: the same connector interlocks with PEX, copper, and CPVC without any tools. A locking clip adds extra security, and the patented zero-leak O-ring guide shields the O-ring during insertion, aligning the tubing and preventing the seal from being knocked out of place when you push the fitting on.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStraight union connector for 1\/2-inch CTS tubing, end to end\u003c\/li\u003e\n\u003cli\u003eTool-free push-to-connect installation in seconds\u003c\/li\u003e\n\u003cli\u003eCompatible with PEX, copper, and CPVC via stainless gripper ring\u003c\/li\u003e\n\u003cli\u003eLocking clip and zero-leak O-ring guide for a secure, sealed joint\u003c\/li\u003e\n\u003cli\u003eNo pipe stiffeners needed on copper and CPVC, preserving full flow\u003c\/li\u003e\n\u003cli\u003eDisconnects and reconnects for flexible, reworkable plumbing\u003c\/li\u003e\n\u003cli\u003eSingle fitting reduces inventory across multiple tubing types\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRepairing a cut or kinked line is one of the most frequent and frustrating tasks in plumbing, often requiring tools, drying time, and patience when solder or solvent cement is involved. A push-to-connect union connector turns that repair into a two-second job: cut the line clean, push both ends in, and the splice is done and ready for pressure.\u003c\/p\u003e\u003cp\u003eBecause copper and CPVC runs need no flow-restricting stiffeners, the connector maintains full flow without adding head loss. And because you can connect and disconnect under the right conditions without tools, reworking a layout or correcting a measurement is painless. For anyone installing or servicing water-treatment systems and household plumbing, this Sea Tech union connector is a dependable, time-saving way to make a clean, leak-free splice that you can trust. Keeping a handful of these connectors in your kit means you are always ready to extend or repair a half-inch line on the spot, without hunting for tools, solder, or solvent cement.\u003c\/p\u003e\u003c!--rel-sys-v1--\u003e\u003cdiv class=\"related-systems\"\u003e\n\u003ch3\u003eRelated Systems \u0026amp; Configurations\u003c\/h3\u003e\n\u003cp\u003eComparing options? These related commercial water-treatment systems are frequently viewed alongside this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sea-tech-union-elbow-1-2-copper-tube\"\u003eSea Tech Union Elbow 1\/2 Copper Tube\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sea-tech-union-tee-1-2-copper-tube\"\u003eSea Tech Union Tee, 1\/2 Copper Tube\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sea-tech-male-adptr-1-2-coper-tube\"\u003eSea Tech Male Adptr 1\/2 Coper Tube\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sea-tech-union-connectr-3-4-copper-tube\"\u003eSea Tech Union Connectr 3\/4 Copper Tube\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Watts","offers":[{"title":"Default Title","offer_id":45668849582133,"sku":"ST05UC","price":58.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/sea-tech-union-cnctr-1-2-copper-tube-hires-r1200.jpg?v=1789610277"},{"product_id":"sea-tech-union-connectr-3-4-copper-tube","title":"Sea Tech Union Connectr 3\/4 Copper Tube","description":"\u003cp\u003eSplice two runs of 3\/4-inch CTS tubing together in seconds with the Sea Tech Union Connector (ST07UC) from Watts Water Technologies. This straight push-to-connect coupling joins tubing end to end with no tools, solder, or glue, making it the quick, reliable choice for extending or repairing the larger supply lines found in whole-house plumbing and water-treatment systems where flow and pressure matter.\u003c\/p\u003e\u003cp\u003eThe connector is built on the proven Sea Tech AquaLock platform, which uses a corrosion-resistant stainless steel gripper ring to grab and hold the tubing securely. That gripper ring interlocks with PEX, copper, and CPVC, all without tools, so a single fitting handles whatever material your run uses. A locking clip provides added security, and the patented zero-leak O-ring guide protects the O-ring during insertion, aligning the tubing and keeping the seal in place as you push the fitting home.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStraight union connector for 3\/4-inch CTS tubing\u003c\/li\u003e\n\u003cli\u003eTool-free push-to-connect installation in seconds\u003c\/li\u003e\n\u003cli\u003eStainless gripper ring grips PEX, copper, and CPVC\u003c\/li\u003e\n\u003cli\u003eLocking clip and zero-leak O-ring guide for secure, sealed joints\u003c\/li\u003e\n\u003cli\u003eNo stiffeners required on copper and CPVC, preserving full flow\u003c\/li\u003e\n\u003cli\u003eConnect and disconnect for flexible, reworkable plumbing\u003c\/li\u003e\n\u003cli\u003eOne fitting works across multiple tubing materials\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOn larger 3\/4-inch lines, a failed or restricted splice has a bigger impact than it would on a small branch, because these runs carry the main flow to softeners, filters, water heaters, and entire fixture groups. A connector that joins the line cleanly and preserves full bore is exactly what these service lines need.\u003c\/p\u003e\u003cp\u003eWith no flow-restricting stiffeners needed on copper and CPVC, the 3\/4-inch connector maintains full flow and adds no head loss, keeping pressure strong on demanding service lines throughout the home. And because the joint can be disconnected and remade without tools, correcting a measurement or reconfiguring a layout is effortless. For plumbers and water-treatment installers working in the 3\/4-inch size, this Sea Tech union connector is a dependable, time-saving way to make a clean, leak-free splice. Quick to install and easy to rework, it is a connector that earns its place in any installer's kit for the larger supply lines that carry the main flow throughout a home or facility.\u003c\/p\u003e","brand":"Watts","offers":[{"title":"Default Title","offer_id":45668849877045,"sku":"ST07UC","price":62.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/sea-tech-union-connectr-3-4-copper-tube-hires-r1200.jpg?v=1789610286"},{"product_id":"pvc-coupling-3-4-sxs","title":"PVC Coupling, 3\/4 SxS","description":"\u003cp\u003eThe PVC Coupling (PVC07C) from American Granby joins two lengths of 3\/4-inch PVC pipe with a simple, solvent-welded slip-by-slip connection. Molded from Schedule 40 PVC, this coupling is a fundamental building block for water lines, irrigation systems, pool and spa plumbing, and the drain and bypass runs found throughout water-treatment installations of every size.\u003c\/p\u003e\u003cp\u003eSlip-fit couplings are the true workhorse of PVC plumbing. The smooth socket ends accept pipe that is bonded in place with PVC primer and cement, forming a chemically fused joint that becomes effectively one continuous piece of material. Properly made, a solvent-welded connection is exceptionally reliable and will not loosen, corrode, or back out under pressure the way threaded metal joints sometimes can over years of service and temperature cycling.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3\/4-inch PVC coupling with slip x slip (socket) connections\u003c\/li\u003e\n\u003cli\u003eSchedule 40 construction for pressure-rated durability\u003c\/li\u003e\n\u003cli\u003eSolvent-weld design creates a strong, permanent, leak-free bond\u003c\/li\u003e\n\u003cli\u003eCorrosion-proof and ideal for treated and untreated water alike\u003c\/li\u003e\n\u003cli\u003eVersatile for water lines, irrigation, pool, and treatment plumbing\u003c\/li\u003e\n\u003cli\u003eLightweight at roughly 0.05 lbs\u003c\/li\u003e\n\u003cli\u003eSupplied by American Granby for dependable plumbing performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSchedule 40 PVC offers an excellent balance of strength, chemical resistance, and affordability, which is precisely why it is so widely used in residential and light-commercial water systems across the country. It will not rust, scale, or corrode, and it handles a wide range of common water chemistries without degrading, making it a reliable long-term material choice.\u003c\/p\u003e\u003cp\u003eIn water-treatment work specifically, PVC couplings appear constantly in drain lines, brine tank plumbing, and bypass arrangements where corrosion resistance is a must and where occasional contact with treatment chemicals is expected. Keep a healthy supply of these 3\/4-inch American Granby couplings on hand and you will always have a quick, economical way to extend a run or repair a cut line with a connection you can trust to stay tight for the life of the system. Inexpensive yet essential, these couplings are the kind of staple that every PVC project relies on, and having a stock of them ready means never being held up by a missing fitting mid-job. Keep a box on the shelf and you will always have a fast, economical way to join two lengths of 3\/4-inch PVC with a connection that lasts.\u003c\/p\u003e","brand":"American Granby","offers":[{"title":"Default Title","offer_id":45668850729013,"sku":"PVC07C","price":14.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/4950\/2261\/files\/pvc10c_41974de6-cb07-4ca3-9703-b08dae8a001a-r1200.jpg?v=1789609246"}],"url":"https:\/\/checkout.watersoftenerplus.com\/collections\/pipe-fittings-unions-and-couplings.oembed","provider":"Water Softener Plus","version":"1.0","type":"link"}