Boiler Feed Valve w/Backflow Preventer, Pipe Size 1/2 in, Length 8 1/2 in, Height 5 1/4 in, Connection Type FNPT x Sweat Union, Adjustment Range 10 to 25 psi, Max. Pressure 100 psi, Max. Fluid Temp. 212 Degrees F, Body Material Bronze, Standards ASSE 1012