Parker 3/8" Union Tee

Branch a 3/8" line into two with the Parker 3/8" Union Tee, a three-way push-to-connect fitting with equal 3/8" ports on every leg. Parker Hannifin molds it from resilient POM polymer for dependable, corrosion-resistant service, and it weighs just 0.02 lbs, making it an easy and reliable addition to any quick-connect plumbing layout in the home or shop.

• Tube x tube x tube union tee configuration
• Equal 3/8" x 3/8" x 3/8" ports for balanced flow
• POM polymer body resists scale, rust, and chemicals
• Push-to-connect collets require no tools or sealant
• Reusable design for quick reconfiguration
• Compact body fits tight installation spaces

Union tees are workhorses of water-treatment plumbing. Whenever you need to feed two devices from one supply, or combine two lines into a single run, a tee handles it cleanly. In 3/8" systems this often means splitting a feed line to parallel filters, teeing off to a secondary fixture or appliance, or distributing flow across a manifold. The equal-port design keeps flow balanced between the branches, which matters when both legs serve devices that should see comparable pressure and volume.

Installation is fast and completely tool-free. Cut each 3/8" tube square, remove any burrs, and press the tube fully into each of the three ports until it seats against the internal O-ring. The locking collets hold the tubing securely even under system pressure, and a light tug confirms a solid joint. To take the connection apart, press the collet ring inward and slide the tube out, then reuse the fitting as your layout evolves. Because the acetal body resists corrosion and mineral scaling, it outlasts metal alternatives in damp environments. Parker's tight molding tolerances ensure a leak-free fit every time, making this tee a reliable choice for home and light-commercial filtration work.

For modular system builders, pairing this tee with matching Parker connectors, elbows, and valves lets you assemble and reconfigure plumbing without adapters or special tools. Keep a few on hand and you will always be ready to split a 3/8" line wherever a new project or upgrade calls for an extra branch. Because the acetal body resists corrosion and mineral scaling in damp environments, it consistently outlasts metal alternatives, giving you a maintenance-free branch point you can rely on for years.