Watts 740-1-40 Boiler Pressure Relief Valve

Boiler Pressure Relief Valve; Type Lever; Inlet Size 1 Inch; Outlet Size 1-1/4 Inch; End Connection Female Threaded x Female Threaded; Body Material Iron; Spring Material Stainless Steel; Seat Material Metal; Disc Material Non-Metallic; Set Pressure Range 40 PSI; Temperature Rating 250 Deg F; Pressure Rating 30 to 75 PSI; Inclusions/Features Seat Located Above Drain, Non-Metallic Disc to Metal Seat, Test Lever, Expanded Outlet; Application Hot Water Heating Boiler; Applicable Standard ASME, NB, HV, MIL-V-18634B, Type I, Class 3A, Style B; Capacity 925000 to 2649000 BTU/Hour; Overall Dimension 3-1/2 Inch Width x 7-1/4 Inch Height