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This Document Has Been Superseded
Newer publications replace it: BSI BS 341-1, BSI BS EN 849, BSI BS EN ISO 12209-1 and 2 more
Transportable gas container valves -- Valves with taper stems for use with breathing apparatus
This British Standard covers:
The material and dimensions of valve fittings for compressed gas cylinders used for breathing apparatus other than for medical purposes.
Dimensions of valving capsules.
An appendix containing recommendations for inspection gauges for the taper threads on the valve stems and in the necks of gas cylinders.
Essential mechanical properties of materials for gas cylinder valves for breathing purposes (other than medical).
Thread dimensions for four sizes of valve stems plus details of manufacturing gauges.
Dimensional drawings for valve outlet connections.
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