RO Check Valve Diagram by BOS
Written by: Alexandra Uta // Last Updated: Aug 15, 2023
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Wondering how the check valve in your reverse osmosis system works and how it all ties in with everything else?
You came to the right place!
Below you’ll find our RO check valve diagram. It shows everything you need to know.
Contents
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RO Check Valve Diagram
So, here is our RO check valve diagram:
The diagram shows that a reverse osmosis check valve follows immediately after the RO membrane. It might even attach to the membrane housing directly (on the permeate port), often in the form of an elbow. If not attached to the RO membrane housing, a reverse osmosis check valve sits on the permeate water line before the ASO valve (automatic shutoff valve).
How Does an RO Check Valve Work?
The check valve is a very simple type of one-directional valve. It usually incorporates a spring to accomplish its effect. Water can only flow through the valve in one direction. As soon as it attempts to flow in the opposite direction, the valve is blocked.
Mechanically, this is a very simple component which also makes it cheap and easy to replace. Generally, you should expect to replace your reverse osmosis check valve once a year or so.
The function of a check valve is to prevent water from flowing backwards towards the reverse osmosis membrane causing damage. It’s also required for the ASO valve to function properly.
Further Reading:
How to Install a Reverse Osmosis Check Valve
Your check valve might be installed in one of two ways. Sometimes the check valve is screwed directly onto the reverse osmosis membrane filter housing. In this case you might have to use Teflon tape to ensure a secure connection to the threads.
Alternatively, the check valve might be installed somewhere further along the permeate line. In this case you have to cut the line into two parts and install the valve in between. Most check valves utilize quick connectors, so this is a simple procedure.
If you have any questions about our reverse osmosis check valve diagram please don’t hesitate to leave a comment below!
About the Author Alexandra Uta
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