This International Standard specifies safety requirements for the construction of small kits for brazing, soldering and welding for non-professional use. This International Standard is applicable to appliances whose welding equipment is completely set up in the factory and which use a liquefied gas or gas mixture as combustible gas, and compressed oxygen, air or an air/oxygen mixture for combustion. It is applicable to appliances which use gases contained in refillable containers having a maximum water capacity of 5 litres, or in disposable containers with maximum water capacity of 1 litre. It is not applicable to the following: — appliances using acetylene or hydrogen as combustible gas; — air-aspirated appliances; — appliances working with an oxygen generator; — appliances working by electrolysis.