1/4 Poly Tubing

Reliable tubing is the connective tissue of water purification systems, and this 1/4 inch John Guest polyethylene tubing in black gives installers a proven, code-friendly choice for RO and conditioning runs. Produced in Linear Low Density Polyethylene for cold and intermittent hot water applications, John Guest PE tubing combines broad chemical compatibility with non-contaminating materials, making it a trusted standard in residential water treatment.

Trusted John Guest Polyethylene

John Guest tubing is engineered to perform across a wide range of temperatures and pressures while remaining easy to work with. Made from FDA compliant materials and certified by NSF International, it is well suited to applications where water quality and safety matter, including water purification, water conditioners, ice makers, and misting systems. The LLDPE construction is more robust than traditional low or medium density polyethylene and is recommended for cold and intermittent hot water service, giving installers confidence in long-term reliability.

• 1/4 inch John Guest polyethylene (LLDPE) tubing in black
• For cold and intermittent hot water applications
• Made from FDA compliant, non-contaminating materials
• NSF International certified for water treatment use
• Broad chemical compatibility and pressure suitability
• Works with John Guest Super Speedfit push-in fittings and valves

The black color makes this tubing easy to organize within a system, helping installers keep feed, product, and drain lines visually distinct in RO setups and other treatment plumbing. Designed for use with John Guest Super Speedfit push-in fittings, John Guest shut-off valves, and virtually all standard tubing connectors, it assembles quickly into clean, reliable connections without solvents or specialty tools. That push-in convenience speeds installations and makes future service or reconfiguration simple when a system needs to be modified.

Quarter-inch tubing is the workhorse size for residential reverse osmosis and many point-of-use applications, carrying water between the RO unit, storage tank, faucet, and drain. Using quality NSF-certified tubing protects the purity of the water the system works so hard to produce, avoiding the off-tastes and contamination that inferior tubing can introduce. Whether you are building a new RO installation, replacing aged lines, or stocking your service vehicle, this 1/4 inch John Guest polyethylene tubing in black is a dependable, professional-grade choice that helps water treatment systems deliver clean, great-tasting water from the unit all the way to the tap.