Home
APEC Residential Undersink RO Systems Replacement Parts
Auto Shut Off Valve
Automatic Shutoff Valve on a white background
Auto Shut Off Valve
Auto Shut Off Valve
Auto Shut Off Valve
Sold out
SKU: ASO

Auto Shut Off Valve

Sale price$8.99 USD Regular price$15.00 USD
Discover the essential APEC Auto Shut Off Valve for your reverse osmosis system. This reliable component automatically stops water flow when tank pressure reaches optimal levels, preventing wastage and system damage. Compatible with most RO systems including models RO-45 and RO-90, this easy-to-install valve features 1/4 inch quick connect fittings and NSF-compliant materials for long-lasting performance.
  • Automatic Shut Off Valve for APEC Reverse Osmosis Systems Model RO-45, RO-90,RO-PH90,ROES-50,ROES-PH75,ROES-UV75.
  • 1/4 inch Quick Connect
  • Manufactured using NSF-compliant materials
  • Light Weight,Easy Install and unload
  • Compatible with most Reverse Osmosis systems

Automatic Shut off Valve (ASO) for Reverse Osmosis Systems

Our ¼” Quick Connect ASO allows your system to turn off the water supply when the tank pressure reaches approximately 65% of the supply water pressure. When you have a tank full of clean water and the waste water didn’t shut off this might be an indication to change your ASO Valve. Other indications are:
ASO rupture or burst – which can cause pure water to mix with tap water.
ASO leak and water can’t get through all the valve causing water channels to plug

Remark: Continual drain problem can be caused by different factors, including automatic shut-off valve, check valve, flow restrictor, or tank pressure. Replacing the ASO may not help if the problem is caused by other factors.

Overall rating: 4.4210525 / 5 from 19 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["solution","system"].

Review highlights

Reviews

Still Troubleshooting

"Not sure yet bc I’m still troubleshooting the system after changing the filters. The system still hums."

— Patrick A. (3/5)

Shut off valve

"After years of maintaining my under the sink RO. We had the check valve malfunction. Was happy to find the replacement here! Easy install and did the job in under 10 min."

— Janis D. (5/5)

Works perfectly

"Works perfectly"

— Angela B. (5/5)

Fixed the terrible vibration in

"Fixed the terrible vibration in the lines!"

— Joan S. (5/5)

The price and timely delivery.

"The price and timely delivery."

— Anthony N. (5/5)

PRODUCTS DIDN'T MAKE IT TO EXPECTED LIFE, ONLY HALFWAY. SHIPPING OUTRAGEOUS.

"WITH SHIPPING CHARGES LIKE THEY CHARGE, THEY SHOULD ALL HAVE THREE CORNERED HATS, FLINTLOCKS AND EYE PATCHES AND SAY MATEY QUITE OFTEN."

— Tom S. (4/5)

Quick and easy replacement. Stopped

"Quick and easy replacement. Stopped the water from constantly running."

— Rex B. (5/5)

"Installed and working"

— Diana (5/5)

Solved the issue!

"I’ve had the APEC system installed for I think decades now. I was getting high water, consumption bills, and traced it to this valve. The valve paid for itself and about the first two weeks and saved water."

— john c. (5/5)

Great Service

"After seven years our filter system was starting to work less efficiently. Through troubleshooting tips on line, I was able to purchase a new auto shut off valve plus all the other replacement parts I needed. I even upgraded my tubing size to 3/8 inch for higher flow rates as well. Items were quickly shipped and my system is now better than new."

— James B. (5/5)

Q&A