Combination Gas Control Valve Conversion Kit; MROSCS Leaf Class Name Valve Conversion Kit; Type 1-Stage, Natural to Liquid Propane; Used On Item Combination Gas Control Valve; Used On Model/Brand V400/V800/VS821/VS820; Regulator Set Point Pressure Rating 8 to 12 Inch WC; Includes Regulator Spring, O-Ring, Adjustment Screw and Cap Screw