Bluonics RO Feed Water Diverter Valve – 1/2” Male & Female Connections, 1/4” Quick Connect for Reverse Osmosis Systems

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RO-DIV-PART-HLF
  • $15.99
    Unit price per 

Under-Sink RO Feed Water Diverter Valve – 1/2” Connections with 1/4” Quick Connect

Connect your reverse osmosis (RO) drinking water system to your existing cold water supply with the Bluonics RO Feed Water Diverter Valve. Designed for under-sink installation, this convenient adapter provides a dedicated water supply connection for your RO filtration system without drilling into existing plumbing.

Featuring 1/2-inch male and female threaded connections and a 1/4-inch quick-connect outlet, this valve makes it easy to connect compatible reverse osmosis systems and under-sink water filters.

Key Features

  • 1/2-inch male and female connections: Designed to fit compatible 1/2-inch threaded cold water supply lines commonly found under kitchen sinks.
  • 1/4-inch quick-connect outlet: Accepts standard 1/4-inch outside diameter (OD) RO tubing for a convenient push-to-connect installation.
  • Built-in shut-off valve: Features an easy-to-use blue handle that allows you to control the water supply to your filtration system.
  • No drilling required: Installs between a compatible cold water shut-off valve and the existing faucet supply line.
  • Versatile compatibility: Suitable for many reverse osmosis drinking water systems and under-sink filtration setups using 1/4-inch OD tubing.
  • Compact design: Fits conveniently beneath kitchen sinks without requiring extensive plumbing modifications.

Product Specifications

Product type: RO feed water diverter valve / water supply adapter

Brand: Bluonics

SKU: RO-DIV-PART-HLF

Main connections: 1/2-inch male and female threaded connections

RO tubing connection: 1/4-inch OD quick-connect fitting

Installation location: Under-sink cold water supply line

Application: Reverse osmosis systems and compatible under-sink water filtration systems

Installation Overview

The Bluonics RO diverter valve connects to your existing cold water supply line beneath the sink.

  1. Turn off the cold water supply.
  2. Disconnect the faucet supply line from the existing shut-off valve.
  3. Install the RO diverter valve between the compatible shut-off valve and faucet supply line.
  4. Insert your 1/4-inch OD RO tubing into the quick-connect outlet.
  5. Restore the water supply and carefully check all connections for leaks.

Important: Confirm your existing plumbing thread size and connection type before purchasing. This valve is intended for compatible cold water supply connections.

The Bluonics RO Feed Water Diverter Valve – 1/2” Male & Female Connections, 1/4” Quick Connect for Reverse Osmosis Systems is a sensational customer favorite, and we hope you like it just as much.

Inventory Last Updated: Oct 31, 2026

Customer Reviews

Based on 2 reviews
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Shane Logan (Auburn, New York, United States)
Bluonics gave me peace of mind

I bought an under sink reverse osmosis filtration system. The diverted valve in the box wasn’t the correct valve. I ordered this product from Bluonics to fix the problem. The price was great and well worth not having to deal with returning the system and hoping for the correct valve in the next one. It arrived earlier than anticipated and works great.

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Allen Rice (Greenville, Florida, United States)
Nice Design

This water supply valve for my RO system is a big improvement over the brass fitting conglomeration that my plumber originally installed. I would have given it 4 stars but the o-ring was not seated properly and took me about 1/2 hour to make it work.