High Vacuum Solenoid Valve High Vacuum Solenoid Valve Valve Ways and Positions 2-Way/2-Position Normally Closed Media - Valves Air Inert Gases Water Pipe Size - Valves 3/4 In. Min Operating Pressure Differential 0 psi Max Operating Pressure Differential Air/Inert Gas 150 psi Max Operating Pressure Differential Light Oil Not Rated Max Operating Pressure Differential Water 150 psi Indoor Outdoor Voltage 120VAC Coefficient of Volume 5.00 Body Material - Valves Brass