Exhaust Valve, Maximum Operating Pressure 145 psi, Minimum Operating Pressure 4.35 psi, Inlet Size 3/4 in, Air Inlet Type NPT, Air Outlet Size 3/4 in, Air Outlet Type NPT, Inlet Gender Female, Air Outlet Gender Female, Body Material Finish Nickel Plated, Maximum Operating Temperature 176 Degrees F, Minimum Operating Temperature -4 Degrees F, Standards REACH, RoHS Compliant, ISO 5598, Body Material Brass, Overall Width 2 1/2 in, Overall Length 3 7/16 in, Overall Height 2 15/16 in