Installation method: external thread conScope of application: cooktops can be used with an identical nozzle size. Replacement steps: disassemble the gas appliance, discover the nozzle, examine the nozzle structure size, as prolonged because the size is the same, the nozzle could be replaced: The substitute activity requires auxiliary use of sealant. After installation, verify the air tightness and use it with out air leakage. Safety Tips: Strictly prevent air leakage!When editing the air source, be sure you use sealant