The 90% auto shut-off valve seen in the picture above should replace the existing 65% auto shut-off valve on your Reverse Osmosis system when you add a Permeate Pump to your system per the Permeate Pump Manufacturer's recomendations. This will greatly enhance the overall performance of the permeate pump and your entire RO system.

The ASV-ERP90 will allow your system to deliver a higher volume of water at a higher pressure out of the faucet and to the icemaker, etc. by increasing the storage tank pressure by about 30% more than the original 65% ASV now on your system.