Watts 174A-1 Boiler Pressure Relief Valve

Boiler Pressure Relief Valve; Type Lever; Inlet Size 1-1/4 Inch; Outlet Size 1-1/4 Inch; End Connection Female Threaded x Female Threaded; Body Material Bronze; Spring Material Stainless Steel; Seat Material Metal; Disc Material Non-Metallic; Set Pressure Range 30 PSI; Temperature Rating 250 Deg F; Pressure Rating 30 to 150 PSI; Inclusions/Features Seat Located Above Drain, Non-Metallic Disc to Metal Seat, Test Lever; Application Hot Water Heating Boiler; Applicable Standard ASME, NB, HV, MIL-V-18634B, Type I, Class 3A, Style A; Capacity 1682000 to 6340000 BTU/Hour; Overall Dimension 4-1/4 Inch Width x 8-1/2 Inch Height