Solenoid Valve Plastic Solenoid Valve Valve Ways and Positions 2-Way/2-Position Normally Closed Media - Valves Air Bases Inert Gases Light Oil Water Pipe Size - Valves 1/4 In. Min Operating Pressure Differential 0 psi Max Operating Pressure Differential Air/Inert Gas 75 psi Max Operating Pressure Differential Light Oil 75 psi Max Operating Pressure Differential Water 75 psi Environmental Rating - Valves Outdoor Voltage 24VAC Coefficient of Volume 0.61