1" Male NPT Inlet X 1" Female NPT Outlet, Set at 15 PSI, 309 Pounds Per Hour Capacity, Bronze/Brass Trim and Metal Seat, ASME Section I Steam Pressure Relief Valve with Plain Lever

1" Male NPT Inlet X 1" Female NPT Outlet, Set at 20 PSI, 358 Pounds Per Hour Capacity, Bronze/Brass Trim and Metal Seat, ASME Section I Steam Pressure Relief Valve with Plain Lever

1" Male NPT Inlet X 1" Female NPT Outlet, Set at 30 PSI, 456 Pounds Per Hour Capacity, Bronze/Brass Trim and Metal Seat, ASME Section I Steam Pressure Relief Valve with Plain Lever

1" Male NPT Inlet X 1" Female NPT Outlet, Set at 40 PSI, 553 Pounds Per Hour Capacity, Bronze/Brass Trim and Metal Seat, ASME Section I Steam Pressure Relief Valve with Plain Lever

1" Male NPT Inlet X 1" Female NPT Outlet, Set at 50 PSI, 651 Pounds Per Hour Capacity, Bronze/Brass Trim and Metal Seat, ASME Section I Steam Pressure Relief Valve with Plain Lever