ISO 13341:2025 Gas cylinders -- Fitting of valves to gas cylinders

This standard – which replaces ISO 13341:2010/Amd 1:2015–specifies procedures for connecting valves to gas cylinders with ISO screw threads (taper and parallel), including inspection and preparation steps. Provides torque values for steel, aluminium, and composite cylinders, and offers guidance applicable to other valve-to-cylinder thread systems worldwide.