scope:

This International Standard specifies the requirements for val ve protection caps and guards for gas cylinders. This Internat ional Standard defines tests for checking the mechanical stren gth and physical properties of the valve protection cap or val ve guard. This International Standard applies to protection de vices for valves used on cylinders for liquefied, dissolved or compressed gases. This International Standard excludes protec tion devices for cylinders with a water capacity of 5 l or less and cylinders whereby the protection device is fixed by mean s of lugs welded or brazed to the cylinder, or is welded or br azed directly to the cylinder. This International Standard doe s not cover valve protection for breathing apparatus cylinders . This International Standard does not specify all the require ments that may be necessary to enable the valve protection dev ice to be used for lifting the cylinder.