Solenoid Valve, Valve Ways 2-Way, Valve Starting Configuration Normally Open, Valve Type High Flow, Nominal Pipe Size 2 1/2 in, Orifice Diameter 1 3/4 in, Body Material Brass, Coefficient of Volume (Cv) 45, Operating Pressure Differential Air/Inert Gas – Maximum 350 psi, Operating Pressure Differential Fuel Gas – Maximum Not Applicable, Seal Material NBR, Voltage 120V AC, Operating Pressure Differential Fuel Oil – Maximum Not Applicable, Coil Enclosure Watertight