The 705-401 and 402 operators are designed to allow field conversion of 700 and 710 Series manual gas valves to wall thermostat control. The 705-401 and 705-402 operators will operate at either 24 VAC or 12 VDC. The operators are also replacements for specific 700-400 Series gas valve operators. Operator kits are available with and without a 3.5" W.C. pressure regulator installed and includes a new gasket and mounting screws. Do not use on 700-800 Series Bleed Gas Controllers (7000GO). Valve will not function properly and an unsafe condition will exist. Always use a new gasket and mounting screws when replacing the valve operator.