Gas Valve | Vent Free Units | 820643 | SIT NOVA570440110SKU:IHPJ3836Fuel TypeChoose ...Natural Gas (incl)Propane Gas(+ $30.00 )Price: $166.00Quantity: Gas Vales DO NOT have return privileges. Vent free valve is same as SIT 820.643. LP Valve SKU = IHPJ3837 SIT gas valve | vent free gas logs and gas fireplaces Compatible with ODS pilot systems on vent free fireplaces and gas logs. Reviews Choose your rating12345