Pilot Air Control Valve, Valve Ways and Positions 4-Way/2-Position, Valve Actuator / Return Pilot / Spring, Valve Port Size 3/8 in, Max. CFM - Valves 61 cfm, Max. Operating PSI 150 psi, Pilot Pressure 50 psi, Pilot Port Size NPT (In.) 1/8 (F), Max. Temp. Range (F) 0 to 180, Coefficient of Volume 1.7, Length (In.) 3 in, Width (In.) 2 7/16 in, Height (In.) 2 1/32 in, Pilot Air Control Valve