Fuel Gas Solenoid Valve Fuel Gas Solenoid Valve 2-Way/2-Position Normally Closed Media - Valves Fuel Gas Pipe Size - Valves 1 In. Min Operating Pressure Differential 0 psi Max Operating Pressure Differential Air/Inert Gas 5 psi Max Operating Pressure Differential Water 5 psi Indoor Outdoor Voltage 12VDC Coefficient of Volume 21 Body Material - Valves Aluminum Coil Insulation Class F Seal Material - Valves NBR Max Operating Pressure Differential 5 psi Orifice Dia 1-5/8 In.