0276500 WATTS # 174A 1 1/2 RELIEF VALVE @ 30PSI 174A11230

Spring loaded Soft seated Bronze body Automatic reseating Inlet Connection Size 1-1/2" Outlet Connection Size 1-1/2" Pressure Range 30 to 150 PSI Pressure Relief Setting PSI 30 Series 174A This 1 1/2 inch boiler pressure relief valve is used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a bronze body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It resists corrosive water conditions, sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief, not as an operating control. The pressure relief is set at 30 psi (206.8 kPa) with corresponding high pressure ratings up to 2,020,000 BTU/hr.