Pilot Air Control Valve, Valve Ways and Positions 4-Way/2-Position, Valve Actuator / Return Pilot / Pilot, Valve Port Size 1/4 in, Max. CFM - Valves 50 cfm, Center Position Not Applicable, Max. Operating PSI 150 psi, Pilot Pressure 20 psi, Pilot Port Size NPT (In.) 1/8 (F), Max. Temp. Range (F) 0 to 180, Vacuum Rated to 29 in Hg, Coefficient of Volume 1.5, Cycles per Minute Up to 600, Length (In.) 2 15/16 in, Width (In.) 1 15/16 in, Height (In.) 1 13/16 in, Uses For Air or Inert Gas