3/8 Union QC "Y" Connector

Split 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.

• Three equal 3/8" x 3/8" x 3/8" push-to-connect ports
• Y-body design promotes smoother, lower-turbulence branching
• Tube x tube x tube connections throughout
• POM polymer construction resists corrosion and chemicals
• Tool-free assembly with reusable locking collets
• Equal porting for even flow to both branches
• Reusable collets allow easy reconfiguration as needs change

The 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.

To 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.

For 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.