Solenoid Valve Less Coil Solenoid Valve Less Coil 2-Way Normally Closed Media - Valves Air Steam Water Pipe Size - Valves 3/4 In. Min Operating Pressure Differential 5 psi Max Operating Pressure Differential Air/Inert Gas 250 psi Max Operating Pressure Differential Light Oil 250 psi Max Operating Pressure Differential Water 250 psi Environmental Rating - Valves Indoor Outdoor Coefficient of Volume 7.00 Body Material - Valves Brass Seal Material - Valves Buna-N