Solenoid Valve Less Coil Solenoid Valve Less Coil 3-Way Normally Closed Media - Valves Air Steam Water Pipe Size - Valves 1/8 In. Min Operating Pressure Differential 0 psi Max Operating Pressure Differential Air/Inert Gas 160 psi Max Operating Pressure Differential Light Oil 160 psi Max Operating Pressure Differential Water 160 psi Environmental Rating - Valves Indoor Outdoor Coefficient of Volume 0.12/0.09 Body Material - Valves Brass Seal Material - Valves Buna-N