Watts 0275054 174A Series, 1" NPT Female Connection, 38 PSI Max, 30-50 PSI Range, Pressure Relief Valve

This 1 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 50 psi (344.7 kPa) with corresponding high pressure ratings up to 1,470,000 BTU/hr.

Features:
Spring loaded
Soft seated
Bronze body
Automatic reseating

Specifications:

Manufacturer: Watts
Manufacturer Part Number: 0275054
Product Type: Pressure Relief Valve
Body Material: Bronze
Inlet Connection Size: 1"
Inlet Connection Type: Female Threaded
Inlet Thread Type: NPT
Lead Free: NO
Maximum Working Pressure: 38 PSI
Outlet Connection Size: 1"
Outlet Connection Type: Female Threaded
Outlet Thread Type: NPT
Pressure Range: 30 to 150 PSI
Pressure Relief Setting: 50 PSI
Series: 174A
Dimensions: 5.6" x 6.05" x 2.7"
Weight: 1.91 lb

Tech Sheet