Guest 1/4 Union Tee

When a water line needs to split into two directions, the John Guest 1/4" Union Tee from Reliance Worldwide Corporation provides three push-fit ports in a single compact body. It is a go-to fitting for branching 1/4" tubing in reverse osmosis systems, drinking-water filters, and dual-outlet setups, such as feeding both a dedicated faucet and a refrigerator ice maker from one filtered supply.

The tee's design lets you tap an existing run without cutting in a piercing saddle valve or soldering a metal branch. Each of the three ports accepts standard 1/4" tubing and seals automatically with an internal O-ring the moment the tube is seated. That makes it ideal for adding a second point of use to a system that originally served only one, or for distributing treated water to two appliances at once.

Key Features

• Connection: Tube x Tube x Tube for three-way 1/4" branching
• Equal union tee distributes flow to two downstream lines
• Polypropylene construction resists corrosion and scale buildup
• Push-in collets grip each tube with no tools needed
• Fully demountable for easy reconfiguration
• Compact body fits tight under-sink and cabinet spaces

Installation is straightforward. Cut each tube square and free of burrs, then push it into its port until fully seated past the collet, and verify each connection with a light pull. Because every port is independently demountable, you can rework the layout at any time by depressing the collet and withdrawing the tube. This flexibility is a real advantage as household needs change, letting you add or remove a branch without replacing the fitting. The corrosion-resistant polypropylene body shrugs off continuous contact with treated water, so the tee performs reliably for the long haul. For clean, leak-free splits in low-pressure filtration plumbing, this John Guest union tee is a dependable, reusable choice that keeps multi-outlet water systems organized.

As part of the broader John Guest family, this tee works seamlessly alongside unions, elbows, valves, and plugs that use the same collet system, letting you design and later rework an entire distribution layout from interchangeable parts. That shared design language is what makes branching, expanding, or reconfiguring a point-of-use water system so painless compared with soldered or barbed alternatives that require cutting and crimping at every change.