Double Check Valve Assembly Series Apollo 4ALF-100 Size 1 1/2 in Connection FNPT Body Material Lead Free Bronze Temp Range 33 Degrees to 180 Degrees F Max Temp 180 Degrees F Max Pressure 175 psi Width 4 3/4 in Length 18 3/4 in Height 4 1/2 in Standards CSA IAPMO Meets USC