Solenoid Valve with Manual Operator Solenoid Valve with Manual Operator Valve Ways and Positions 4-Way/2-Position Media - Valves Air Inert Gases Light Oil Water Pipe Size - Valves 1/2 In. Min Operating Pressure Differential 10 psi Max Operating Pressure Differential Air/Inert Gas 150 psi Max Operating Pressure Differential Light Oil 125 psi Max Operating Pressure Differential Water 125 psi Explosion Proof Indoor Outdoor Voltage 120VAC Coefficient of Volume 1.40