Description

Auto Shut-Off Valve (ASO) – 1/4″ Quick-Connect for RO Systems

This auto shut-off valve (ASO) is designed to automatically stop the water supply to a
reverse osmosis (RO) system when the storage tank is full or when water flow is closed.
It helps prevent continuous water waste and reduces unnecessary membrane wear.

Featuring 1/4″ quick-connect ports, this valve allows fast, tool-free installation
and is compatible with most standard residential RO systems. The ASO valve operates
using pressure differential and does not require electricity.

Commonly installed between the RO membrane and storage tank, this valve is an essential
component for efficient and automatic RO system operation.

Features

• Automatically shuts off water supply when tank is full
• Helps reduce water waste and extend membrane life
• Tool-free installation with 1/4″ push-to-connect fittings
• Operates without electricity
• Compatible with most standard RO systems
• Compact and durable design

Specifications

• Port Size: 1/4″ OD tubing (Quick-Connect)
• Connection Type: Push-to-Connect
• Function: Automatic water shut-off
• Operating Pressure: 40–125 psi
• Operating Temperature: 36°F – 100°F (2°C – 38°C)
• Applications: Reverse osmosis systems, undersink RO, countertop RO (with tank)

Note: Auto shut-off valves are designed for use with RO storage tanks.
High-flow RO systems (200+ GPD) may require alternative shut-off solutions.