BS EN 962:1997(2001) Transportable gas cylinders — Valve protection caps and valve guards for industrial and medical gas cylinders — Design, construction and tests
2009BS EN ISO 11117:2008 Gas cylinders - Valve protection caps and valve guards - Design, construction and tests
1997BS EN 962:1997 Transportable gas cylinders - Valve protection caps and valve guards for industrial and medical gas cylinders - Design, construction and tests