Gas Valves36″ thermocouple included with 2E520 and 5E764. 39″ thermocouple included with 2E726.Combination Gas Valve, Coil Voltage 24 Volts, Inlet/Outlet 3/4 x 3/4 Inch, BtuH Capacity 300, 000, Gas Type Natural, Side Taps No, Inlet Pressure Tap No, LP Conversion Kit, Reducer Bushing Kit 3/4 x 1/2 Inch, Current Rating 0.2 Amp