Customer Questions and Answers for Icemaker Kit by Ge

Lon, Like most water inlet valves, in most machines the minimum PSI is 20 and the maximum is 120 PSI. However, things do change depending on the configuration of the refrigerator. If your refrigerator has a built in water filter system and/or a water dispenser, then the recommended minimum water supply pressure changes to 32 to 35 PSI minimum,and constant to properly fill and operate all the water associated options. The "issue" with an "RO" system is the fluctuations in the supply pressure and loss of pressure in the tank, when it reverses and flushes itself. This process can cause air in the system, loss of pressure, causing the valves to fluctuate and the ice maker and dispenser to operate erratically. Depending on the brand and model refrigerator, you will want to remove the filter, install the bypass plug(if needed) and a "check valve" or pump on the water supply line to the refrigerator to reduce the pressure fluctuations( see your "RO" system installer/manufacturer). You can also "bypass" the "RO" system and install a separate water line to the refrigerator.