1/4 Inch Tube Automatic Shut Off Valve, with Quick-Connect Fittings

The 1/4″ Automatic Shut-Off Valve (ASO) is a key component used in domestic Reverse Osmosis (RO) systems to automatically stop water production when the storage tank is full. It works by sensing pressure changes between the high-pressure and low-pressure sides of the RO membrane. Equipped with 1/4″ quick-connect fittings, it allows fast, tool-free installation into standard RO tubing.

Features

• Automatic water shut-off when RO tank is full

• Prevents waste water flow after tank pressure is reached

• 1/4″ quick-connect fittings for simple push-fit installation

• Improves system efficiency and reduces water wastage

• Food-grade, durable, and corrosion-resistant design

• Compatible with most 4-stage and 5-stage RO systems

Sizes Available

• 1/4″ Tube × 1/4″ Tube × 1/4″ Tube × 1/4″ Tube (4-port standard ASO valve)

• Optional models:

  • 3/8″ × 3/8″ × 1/4″ × 1/4″

  • 3/8″ × 3/8″ × 3/8″ × 3/8″