SHURFLO Wall Mount Water Pressure Regulator 65 psi - WhiteFresh Water Inlet Used For RV Fresh Water System The built in pressure saver helps protect your system against high water pressure damage. High pressure input water is reduced to a nominal 65 PSI. The filter screen helps prevent dirt and foreign substance build up. The built in check valve prevents water loss when the pump is in use, and the diaphragm is designed for longer life. One size fits all. Dimensions: 3 4 Inch GSH Female Swivel Inlet x 1 2