Solenoid Valve Less Coil Solenoid Valve Less Coil 2-Way Normally Closed Media - Valves Air Steam Water Pipe Size - Valves 3/8 In. Min Operating Pressure Differential 0 psi Max Operating Pressure Differential Air/Inert Gas 10 psi Max Operating Pressure Differential Light Oil 10 psi Max Operating Pressure Differential Water 10 psi Environmental Rating - Valves Indoor Outdoor Coefficient of Volume 1.70 Body Material - Valves Brass Seal Material - Valves Buna-N