Shurflo by Pentair Pressure Reducing City Water Entry - Wall Mount - ChromePressure Reducing City Water Entry Wall Mount Chrome This combination pressure reducing city water entry and check valve diaphragm design prevents high pressure damage often caused by city water systems. This high performance water entry limits water pressure safely to 50 PSI while meeting or surpassing all check valve code requirements. This in line pressure reducing water entry includes a check valve. 3 4" GSH Female swivel inlet. 1 2" NPSM Male