Parker Reducing Union Tee 3/8x3/8x1/4

The Parker Reducing Union Tee in 3/8" x 3/8" x 1/4" combines branching and size reduction in a single molded POM polymer fitting. Two 3/8" ports carry the main run while a 1/4" port taps off a smaller branch, making it a clever, space-efficient solution where mixed tubing sizes meet. Parker Hannifin builds it to exacting tolerances, and it tips the scale at just 0.03 lbs, so it adds versatility without bulk to any quick-connect layout.

One Fitting, Two Jobs

Instead of pairing a standard tee with a separate reducer, this reducing union tee handles both functions at once. That means fewer connection points, a tidier installation, and less chance of leaks down the road. It shines in reverse-osmosis and filtration plumbing where a 3/8" supply needs to branch off a 1/4" line to a faucet, monitor, leak detector, or secondary device. Consolidating two functions into one body also speeds up assembly and keeps tubing runs cleaner inside tight cabinets.

• Three-way tube x tube x tube reducing tee
• Port sizes: 3/8" x 3/8" x 1/4" inch
• Durable POM polymer resists corrosion and scaling
• Push-to-connect collets on all three ports
• No tape, dope, or tools required for assembly
• Reusable design for easy reconfiguration

Installation follows the familiar quick-connect routine: cut each tube square, remove burrs, and press fully into the appropriate port until it bottoms out against the internal stop. The integral O-rings seal instantly and the locking collets secure each tube under pressure. To disconnect, press the collet ring inward and pull the tube free, then reuse the fitting as needed. With Parker's reputation for fluid-system reliability behind it, this reducing union tee is a smart, problem-solving addition to any water-treatment installer's parts bin, ready whenever a branch and a size change need to happen in the same spot.

For installers building modular systems, combining this reducing union tee with matching connectors, elbows, and valves from the Parker quick-connect family lets you assemble clean, serviceable plumbing without adapters or specialty tools. It is a versatile piece that earns its spot in the kit whenever a project mixes 3/8" and 1/4" lines.