RO Feed Water Adapter 1/2 to 1/4 3/8 with Shut-Off Ball Valve

RO Feed Water Adapter with Shut-Off Ball Valve – 1/2" to 1/4" & 3/8"

Upgrade your under-sink water filtration setup with this precision-crafted RO Feed Water Adapter. Designed to connect 1/2" cold or hot water supply lines to 1/4" or 3/8" RO (reverse osmosis) tubing, this tee-style adapter features a built-in shut-off ball valve for easy, tool-free water flow control. Whether you're installing a new water filter system or replacing an old fitting, this adapter makes the job clean and straightforward.

Made in Mainland China.

Key Features

• 304 Stainless Steel Construction – Corrosion-resistant and built to last in wet under-sink environments
• Versatile Sizing – Converts 1/2" feed lines to 1/4" or 3/8" tubing for maximum compatibility with most RO and water filter systems
• Integrated Shut-Off Ball Valve – Quickly shut off water supply for maintenance or filter changes without turning off the main supply
• Rated up to 850 kPa – Handles standard household water pressure with confidence
• Tee Design – Allows simultaneous tap connection and RO feed line hookup without extra fittings
• Silver Finish – Sleek, metallic look that blends seamlessly under the sink
• Universal Fit – Compatible with both cold and hot water pipes for flexible installation

Specifications

What's in the Box?

1 × RO Feed Water Adapter Tee Set with Shut-Off Ball Valve

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Frequently Asked Questions

Q: What pipe sizes does this RO feed water adapter support?

A: This adapter connects a standard 1/2" water supply line to either a 1/4" or 3/8" RO or water filter feed line. It is compatible with both cold and hot water pipes, making it highly versatile for most under-sink water filter installations.

Q: Is this adapter compatible with standard reverse osmosis (RO) systems?

A: Yes. This adapter is specifically designed for use with RO (reverse osmosis) and under-sink water filter systems. The tee configuration allows you to tap directly into your existing supply line and route water to your RO unit without disrupting the main plumbing.

Q: What is the maximum water pressure this ball valve adapter can handle?

A: This adapter is rated for water pressure up to 850 kPa, which covers the typical operating range of standard residential water supply systems.

Q: How do I use the shut-off ball valve on this adapter?

A: The integrated ball valve allows you to stop water flow to your RO or filter system with a simple 90° turn — no tools required. This is ideal when you need to swap out filters or perform maintenance without shutting off your entire water supply.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.