Reverse Osmosis Auto Shut Off Valve

Replacement auto Shut Off Valve for Reverse Osmosis Systems
1/4" John Guest Fittings 2 in 2 out. 
If your Reverse Osmosis system either never stops running or doesn't run at all and you've changed all the filters, chances are, your pressure switch may be bad. This works on most residential 3, 4 and 5 stage reverse osmosis systems.