Solenoid Valve Less Coil Solenoid Valve Less Coil 3-Way Universal Media - Valves Air Steam Water Pipe Size - Valves 1/4 In. Min Operating Pressure Differential 0 psi Max Operating Pressure Differential Air/Inert Gas 100 psi Max Operating Pressure Differential Light Oil 100 psi Max Operating Pressure Differential Water 100 psi Environmental Rating - Valves Indoor Outdoor Coefficient of Volume 0.12/0.09 Body Material - Valves Brass Seal Material - Valves Buna-N