... :Use Method:1. Inspection: Connect the parts of the torch, put the gas pipe to connect the gas chuck, ... leakage in the trachea, and then hanging up the torch store in a cool ,well ventilated palce .Schema Of ... that the cock for the gas supply on the torch is firmly closed, The closing force of the handwheel ... , use only original spare parts. 2012 New Italy Type Welding Torch/ Heating Torch/Cutting Torch