3/4" Male NPT Inlet X 1" Female NPT Outlet, Set at 55 PSI, 1,115,000 btu Capacity, 250 degrees F Maximum Temperature Service, ASME Section IV Polished Chrome Hot Water Pressure Relief Valve

3/4" Male NPT Inlet X 1" Female NPT Outlet, Set at 60 PSI, 1,200,000 btu Capacity, 250 degrees F Maximum Temperature Service, ASME Section IV Polished Chrome Hot Water Pressure Relief Valve

3/4" Male NPT Inlet X 3/4" Female NPT Outlet, Set at 20 PSI, 420,000 btu Capacity, 250 degrees F Maximum Temperature Service, ASME Section IV Brass Hot Water Pressure Relief Valve

3/4" Male NPT Inlet X 3/4" Female NPT Outlet, Set at 25 PSI, 485,000 btu Capacity, 250 degrees F Maximum Temperature Service, ASME Section IV Brass Hot Water Pressure Relief Valve

3/4" Male NPT Inlet X 3/4" Female NPT Outlet, Set at 30 PSI, 550,000 btu Capacity, 250 degrees F Maximum Temperature Service, ASME Section IV Brass Hot Water Pressure Relief Valve

3/4" Male NPT Inlet X 3/4" Female NPT Outlet, Set at 35 PSI, 610,000 btu Capacity, 250 degrees F Maximum Temperature Service, ASME Section IV Brass Hot Water Pressure Relief Valve

3/4" Male NPT Inlet X 3/4" Female NPT Outlet, Set at 40 PSI, 675,000 btu Capacity, 250 degrees F Maximum Temperature Service, ASME Section IV Brass Hot Water Pressure Relief Valve