Your cart is empty.
Your cart is empty.Product Description
Reverse Osmosis Water Filter Automatic Shut-Off Valve with Quick-Connect fittings, 1/4" - Allows your system to turn off the water supply when the tank pressure reaches approximately 65% of the supply water pressure; - 1/4" fitting; - Easy to install, as the picture shown. The "in & out" markings are on the top of the valve. The top side of the valve is the high pressure side and the bottom side is the low pressure side. The high pressure from the filter housings goes to the "in" on the top of the valve. Then the high pressure "out" goes to the membrane housing inlet. The membrane housing low pressure outlet connects to the "in" on the bottom side of the valve. The "out" on the bottom goes to the tank. Remark: Continual drain problem can be caused by different factors, including automatic shut-off valve, check valve, flow restrictor, or tank pressure. Replacing the ASV may not help if the problem is caused by other factors.
From the Manufacturer
Reverse Osmosis Water Filter Automatic Shut-Off Valve with Quick-Connect fittings, 1/4" - Allows your system to turn off the water supply when the tank pressure reaches approximately 65% of the supply water pressure; - 1/4" fitting; - Easy to install, as the picture shown. The "in & out" markings are on the top of the valve. The top side of the valve is the high pressure side and the bottom side is the low pressure side. The high pressure from the filter housings goes to the "in" on the top of the valve. Then the high pressure "out" goes to the membrane housing inlet. The membrane housing low pressure outlet connects to the "in" on the bottom side of the valve. The "out" on the bottom goes to the tank. Remark: Continual drain problem can be caused by different factors, including automatic shut-off valve, check valve , flow restrictor, or tank pressure. Replacing the ASV may not help if the problem is caused by other factors.
D. Schmetterling
2025-09-02 09:05:17
We all expect products we invest in to do the job, and iSpring RO systems will not disappoint - but what sets this company apart is the terrific technical support.Today, Nick simply and easily helped me troubleshoot and remedy a problem - honestly, so nice to know a company has talent like that and the desire to provide such great service.
Bob - Just for You Today
2025-08-21 10:54:46
Worked as described and as needed. Very easy to work with and install. Saved having to purchase another filter system.
Luke
2025-08-18 11:00:51
The one that came with the water filter system broke only after 5 months. I got a replacement and that one lasted longer, for a year and 8 months. We'll see how long the new one will last. As for how the device functions and the installation with the quick connect, it is great. Durability not as good.
AZ Gardener
2025-07-29 14:59:54
This stopped my never-ending drain issue with my iSpring RO System I got back in 2013. When you refill your tank with pressure, this can make the drain problem show up a little easier.You can check if it's the ASO valve vs the check valve by turning off the tank valve, but leave the inlet valve open (that comes from your house water supply). If it continues to drain then the ASO valve could be bad.. If you do the opposite (turn on tank valve, off inlet water supply) and it stops draining then it's most likely the ASO valve.Some tips for installation:Make sure you buy extra RO tubing with this so you can put new tubing on at the same time, especially if your old ASO valve has screw on fittings like mine did.Push the tubes in pretty forcefully into the quick connect fittings, if you don't push past the rubber ring inside, it will leak at that fitting. You can take the little plastic lip piece out to see where the rubber ring is to get an idea of what you will need to push past. There are some good youtube videos on how to install these correctly if you are still stuck.Before you put the RO system back, leave it out for 10-15 minutes with everything turned on to make sure nothing leaks. If any of the quick connects are leaking, see the note above about pushing it past the rubber ring. You can use petroleum jelly if it's being really stubborn.
BobB
2025-07-02 13:17:11
Here you go, lessons I learned the hard way (my ASO valve would not operate correctly):1) Make SURE you understand the IN & OUT ports and hook up the lines correctly to ASO valve.2) Use ONLY hard lines to interconnect (dont use clear lines from home depot, they are too soft and valve wont shutoff correctly).3) Keep all hard tube lengths to ASO valve as short as possible.4) On all connections make sure the tubes push all the way down5) On all post carbon filters, post filters, etc...dont plug tubing directly into these filters, always use a push in connector first then push your tube into those connectors.I did all above and fixed my ASO valve RO system operation.
Paul Haines
2025-06-18 10:33:50
I spoke with John at iSpring in Cummings, GA and he sent the replacement parts ASAP. They were very helpful!
Gary Jamesjo
2025-05-26 13:38:54
This was easy to install, and when I got the lines mixed up Nick was there to the rescue 10/10 would buy again.
Tom
2025-05-18 12:53:16
None of the ASOs on Amazon have any information about the dimensions between the ports on these ASOs. I have a Pentair, Freshpoint under sink RO system. The valve is fitted directly onto the posts in the manifold inside the unit. The post spacings are about 15/16†but this ASO is roughly 7/8â€. So the only solution to make this one work is to put tubing between the manifold and the ASO which means it doesnt nest inside the housing any longer.Product dimensions and schematics are a basic requirement of any listing of mechanical devices yet no one seems to provide this any longer. The focus seems to be on making it easy to purchase and return without being easy to understand whether the product is actually a solution to the buyers’ problem. Web shopping has taken so many storefronts out of business, how does one find help with anything now?
From Winnipeg
2025-05-16 17:24:47
Arrived on time and it's a good quality Item although In & Out valves are not clearly identified as it is in the ISpring OEM RO System (red marked on Jhon Guest quick connect fitting), I had to figure it out since the mark is almost imperceptible.
Customer
2025-05-14 18:22:09
Good
Fruitinator
2025-05-10 18:21:55
Very easy installation. Installed the shut-off valve in about 1 minute and it works flawlessly with no issues or noise created. It does not require any special tools or help to install and most anyone should be able to install it on their own.
Javad sedighi
2025-04-07 12:21:07
Worked great
Customer
2025-02-17 11:21:53
Does the job
Recommended Products
