1" Female NPT Inlet X 1 1/4" Female NPT Outlet, Set at 15 PSI, 1,027,000 BTU Capacity, Hot Water High Capacity Pressure Relief Valve

1" Female NPT Inlet X 1 1/4" Female NPT Outlet, Set at 30 PSI, 1,570,000 BTU Capacity, Hot Water High Capacity Pressure Relief Valve

1"X1.25" 40PSI 1,933.00BTU

1" Female NPT Inlet X 1 1/4" Female NPT Outlet, Set at 45 PSI, 2,114,000 BTU Capacity, Hot Water High Capacity Pressure Relief Valve

1" Female NPT Inlet X 1 1/4" Female NPT Outlet, Set at 50 PSI, 2,295,000 BTU Capacity, Hot Water High Capacity Pressure Relief Valve

1" Female NPT Inlet X 1 1/4" Female NPT Outlet, Set at 60 PSI, 2,657,000 BTU Capacity, Hot Water High Capacity Pressure Relief Valve

1X1.25:65# H/W

1" Female NPT Inlet X 1 1/4" Female NPT Outlet, Set at 75 PSI, 3,200,000 BTU Capacity, Hot Water High Capacity Pressure Relief Valve

1"X1 1/4" 80# 3,381,000btuhr

Relief Valve 1-1/4 85 PSI