Oasis Select

RO Feed Water Adapter 1/2" to 1/4" with Shut-Off Ball Valve Tee

$6.94 USD

~~$8.60 USD~~ $6.94 USD

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Color B1 B2 A1 A2

RO Feed Water Adapter – 1/2" to 1/4" with Shut-Off Ball Valve

Keep your reverse osmosis system running smoothly with this compact, reliable feed water adapter. Designed to tap into your existing 1/2" cold or hot water supply line and convert it to a 1/4" feed line, this tee fitting makes RO system installation straightforward — no plumber required. The built-in shut-off ball valve lets you isolate your RO unit instantly for filter changes or maintenance, without disrupting your main water supply.

Key Features

Universal Compatibility: Fits standard 1/2" water supply lines and converts to 1/4" tubing — ideal for most under-sink reverse osmosis systems.
Integrated Shut-Off Ball Valve: Easily stop water flow to your RO unit for hassle-free filter replacements and maintenance.
Tee Design: Splits your existing supply line so your faucet and RO system can both be served from one connection — no extra plumbing required.
Hot & Cold Water Compatible: Works on both hot and cold water supply lines for flexible installation options.
Durable Construction: Built from quality materials to withstand typical household water pressure and everyday use.
Easy DIY Installation: Simple thread-and-tighten setup — no special tools needed.

Specifications

Inlet Size: 1/2"
Outlet Size: 1/4"
Valve Type: Shut-Off Ball Valve
Fitting Type: Tee (T-connector)
Compatible With: Cold & Hot Water Supply Lines, RO / Reverse Osmosis Systems
Country of Origin: Made in China

What's in the Box

1 × RO Feed Water Adapter Tee with Shut-Off Ball Valve (1/2" to 1/4")

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For more information on water quality and the benefits of reverse osmosis filtration, visit the U.S. Environmental Protection Agency – Drinking Water FAQs.

Learn more: Sterling Plumbing

Frequently Asked Questions

Q: What size supply line does this RO feed water adapter fit?

A: This adapter is designed to connect to a standard 1/2" water supply line (both cold and hot) and provides a 1/4" outlet to feed your reverse osmosis system. It is compatible with most under-sink RO installations.

Q: Do I need a plumber to install this RO tee adapter?

A: No — this fitting is designed for straightforward DIY installation. Simply attach the tee to your existing 1/2" supply line and connect your 1/4" RO tubing to the outlet. The shut-off ball valve allows you to control water flow to the RO unit independently.

Q: What is the shut-off ball valve used for?

A: The integrated shut-off ball valve allows you to stop the water supply to your reverse osmosis system whenever you need to change filters or perform maintenance — without turning off the main water supply to your faucet or home.