NATURAL GAS VALVE 1" INLET X 1" OULET, 720,000 BTU CAPACITY. These 700 Series Gas Valve Uni-Kits® are designed for intermittent pilot, direct spark and hot surface applications. They incorporate a manual valve, pilot valve, and a main gas pressure regulator. Each Uni-Kit includes all the necessary parts and instructions needed to convert to direct spark or hot surface applications. These valves are designed for many residential and commercial applications such as central heating units, Boilers Commercial Furnaces and boilers.