Manual Air Control Valve, Valve Ways and Positions 4-Way/2-Position, Valve Port Size 3/8 in, Connection NPT, Valve Actuator / Return Lever / Detent, Max. CFM - Valves 2.9 cfm, Valve Max. Pressure Rating 150 psi, Valve Temp. Range 0 Degrees to 140 Degrees F, Coefficient of Volume 2.9, Body Material Aluminum, Overall Length 6 3/4 in, Overall Height 5 1/2 in, Overall Width 1 1/4 in, Series 42, Manual Air Control Valve