| WATTS 0382820 Backflow Check Valve,50 psi,1899000Btu Pressure Relief Valve, Body Material Iron, Factory Set Pressure 50 psi, 1,899,000 BtuH BtuH, Overall Height 7 1/4 in, Application Hot Water Space Heating Boiler, Overall Length 3 1/2 in, Test Lever Not Applicable, Standards ASME Code HV ... more WATTS 0382820 Backflow Check Valve,50 psi,1899000Btu Pressure Relief Valve, Body Material Iron, Factory Set Pressure 50 psi, 1,899,000 BtuH BtuH, Overall Height 7 1/4 in, Application Hot Water Space Heating Boiler, Overall Length 3 1/2 in, Test Lever Not Applicable, Standards ASME Code HV | | $265.99 go to store |