Replacement Part for APEC Water Systems Auto Shut Off Valve (ASO)

Jack H: Replaced my old one as it was leaking. Installation was easy.

United States on Jul 12, 2023

kumar suppiah: Replacement for a cracked unit. Works well so far. Its a push fit for the tube.

Singapore on Oct 18, 2021

Kenebob: This ASO valve works, but it is too sensitive to “normal” city water pressure. I hooked it up and opened the cold water valve all the way, but nothing happened. I waited a few hours; nothing. I turned off the cold water valve slowly and the ASO valve turned on the Reverse Osmosis (RO) system, then cut it off as the valve opened more. I experimented with the cold water valve position to maximize the RO water production before cut-out. It works best for my at about 1/4 turn open. This is not exactly the same as the (out of stock) Watts ASO valve, but it is making RO water and is not wasting water like the old defective valve did.

United States on Jun 10, 2021

Danbraden: I can confirm this ASO valve is a suitable replacement for 1/4" tubing ASO valve used in the Watts 4 stage RO filtration system. After installing the replacement I learned some tips for those who wanted to save a little money by using a "non-standard" or "off brand" replacement part for ANY RO system.

1. Ensure correct tubing size. Make sure you know the correct tubing size for the feed lines in your RO system. This product is compatible with 1/4" tubing only.
2. Install ASO Valve correctly. If you, like me, are installing this ASO valve as a replacement in a NON APEC RO system, the color coding with the ports may not match. The blue collet on the "in" side of the ASO valve connects to your COLD WATER SUPPLY. The white port connects to your RO Tank. From there it's simple to connect the "out" side keeping the tube color pattern consistent.
3. Check ASO Valve function. After you have turned the water supply back on, you will probably hear the system functioning and also that draining sound which may have started you down this path to begin with. TAKE HEART! Here's what you do: SHUT OFF THE TANK VALVE AND WAIT 5-10 MINS! If the ASO valve is installed correctly and there...

United States on Feb 11, 2021

R. Claghorn: Rating 4 stars for now because it's low cost and appears to be functioning as intended, though I just installed it yesterday. My Watts Pure H20 system has been running non-stop for several months and I noticed a big increase in my water bill. Turns out the automatic shutoff valve that got cracked during installation is a critical component of the system (I had been running without one). The installation instructions that came with this valve are worthless. After extensive searching on the internet I think I figured out how to install on my system. There is a high pressure side of on the top of the unit that is marked with "in" and "out" indications. The opposite side with screws is the low pressure side. Plug the green water supply line into the "in" port of the high pressure side, while the green line to the RO unit goes to the "out" port of this side. Then plug the blue water storage tank line into the "out" port of the low pressure side while the blue line going from the tank to the RO unit goes to the "in" port. This configuration appears to be working as the gurgling sound has stopped after the tank pressurized.

United States on Dec 16, 2020

B & G Rodriguez: So far so good. I have a GE Smartwater RO system and after changing the filters and membrane, noticed that the water pressure coming out of the RO faucet would come out strong for the first few 5 seconds, then diminish quickly and continue to diminish until barely coming out. Then, after I turned the faucet back off, you could hear the drain line run for 20-30 minutes afterwards. After some initial research, I took off the check valve and could blow air (by mouth), both directions which is an indication that it is no longer working as it is only supposed to allow passage one way. So I ordered and replaced that part but the problem was still there. So, I bought this ASO valve and replaced my old one. My old one had threaded male parts but I'm a big fan of these quick connects. Was a little difficult to get to the old ASO valve as a couple of the tubes connected to it were very short. I had to undo one of them in order to move the old ASO valve down so I could get to it. If you have easy access to your ASO valve, the change should probably be less than 5 minutes. Anyway, I matched up the "IN" and "OUT" with the old one and switched them out. Put everything back, turned the water...

United States on Sep 19, 2017