The Robertshaw 1751 Series Add-on Pressure Regulator Kits are available for use on the following factory model types: 7000, 7010, 7100, 7200 and 7222. Each 1751 pressure regulator kit provides straight-line regulation and includes all the necessary parts including instructions to convert a specific factory model gas valve. Features and Benefits Converts natural gas to LP Not for use with hydraulic models which cannot be field converted Includes all necessary parts for easy regulation conversion