Solenoid Air Control Valve, Valve Ways and Positions 4-Way/2-Position, Voltage 24V DC, Center Position Not Applicable, Valve Actuator / Return Solenoid Air Pilot / Spring, ISO Class Not Applicable, Pipe Size 1/2 in, Max. CFM - Valves 253 cfm, Operational Pressure Range 20 to 150 psi, NEMA Classification NEMA 4, Valve Vacuum Range 0 to 28 in Hg, Body Style Base-Mounted, Pilot Port Size 1/2 in NPT, Pilot Pressure 20 psi, Coefficient of Volume 5.5, DC Plug-In w/Light Electrical Connections