Gas Stove Accessories LPG NG Biogas Modified Gas Source Nozzle For VATTI Magic Dish Stove Replacement steps: disassemble the gas appliance, find the nozzle, test the nozzle structure size, as lengthy since the length is the same, the nozzle could be replaced. Note: The substitute task calls for auxiliary use of sealant. After installation, examine the air tightness and use it without air leakage.