4-Way Automatic Shut Off Valve


  • 1/4″ Quick Connect Fittings
  • Fits All Olympia Reverse Osmosis Systems
  • Compatible with most undersink RO systems with standard ¼” tubing

In stock

The automatic shut off valve (ASOV) turns off RO system water production when the storage tank is full. Easy installation with “In” and “Out” markings on top of the valve and 1/4″ O.D. quick connect fittings.

Share your thoughts!

Let us know what you think...

What others are saying

There are no contributions yet.




Continue as a Guest

Don't have an account? Sign Up

30 Day Money-Back Guarantee

Olympia Water System products have a 30 day money-back guarantee from the date of purchase. All return shipping fees are the customer’s responsibility unless the return is due to manufacturer error or defect. For details on our Return Policy and Product Warranty please visit our Terms & Conditions and Warranty pages.


In-stock items will be shipped within 2-3 business days after your order has been placed. We currently only ship to addresses within in the United States (48 continental states, Alaska & Hawaii).