3/4 WATTS BOILER RELIEF VALVE 30 PSI 650K BTU

Watts Series 174A Boiler Pressure Relief Valves are 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. Watts Series 174A PRV 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 and shall not be used as an operating control. Standard Pressure Setting 30psi 206.9 kPa Pressure Range In 5psi 34.5 kPa increments from 30 to 150psi 2 to 10 bar with corresponding high ratings from 650000 to 14370000 BTU hr.