Air and Fuel Gas Solenoid Valve Air and Fuel Gas Solenoid Valve 2-Way/2-Position Normally Closed Media - Valves Air Fuel Gas Pipe Size - Valves 3/4 In. Min Operating Pressure Differential 0 psi Max Operating Pressure Differential Air/Inert Gas 50 psi Max Operating Pressure Differential Water 50 psi Explosion Proof Indoor Outdoor Voltage 12VDC Coefficient of Volume 5.1 Body Material - Valves Aluminum Coil Insulation Class F Seal Material - Valves NBR