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eLibrary > BS 341-1:2022 Gas cylinders. Cylinder valves - Threads for connection of valves to gas cylinders. Specification >

BS 341-1:2022 Gas cylinders. Cylinder valves - Threads for connection of valves to gas cylinders. Specification, 2022

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BS 341-1:2022 Gas cylinders. Cylinder valves - Threads for connection of valves to gas cylinders. Specification, 2022

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions [Go to Page]
Figure 1 — Hand wheel operated valve
Figure 2 — Key operated valve
4 General requirements [Go to Page]
4.1 Spindle ends for key operated valves
4.2 Use of pressure relief devices
5 Valve inlet and cylinder neck connections [Go to Page]
5.1 Tapered
5.2 Oversized tapered
5.3 Parallel
Figure 3 — Dimensions and manufacturing tolerances of valve body tapered stem/cylinder neck threads – 16T Type
Table 1 — Dimensions and manufacturing tolerances of valve body tapered stem/cylinder neck threads – 16T Type
Figure 4 — Dimensions and manufacturing tolerances of valve body tapered stem/cylinder neck threads – 17T Type
Table 2 — Dimensions and manufacturing tolerances of valve body tapered stem/cylinder neck threads – 17T Type
Figure 5 — Dimensions and manufacturing tolerances of valve body tapered stem/cylinder neck threads – 18T Type
Table 3 — Dimensions and manufacturing tolerances of valve body tapered stem/cylinder neck threads – 18T Type
Figure 6 — Dimensions and manufacturing tolerances of valve body tapered stem/cylinder neck threads – 19T Type
Table 4 — Dimensions and manufacturing tolerances of valve body tapered stem/cylinder neck threads – 19T Type
Figure 7 — Dimensions and manufacturing tolerances of valve body tapered stem/cylinder neck threads – 26T Type
Table 5 — Dimensions and manufacturing tolerances of valve body tapered stem/cylinder neck threads – 26T Type
Figure 8 — Dimensions and manufacturing tolerances of valve body tapered stem/cylinder neck threads – 32T Type
Table 6 — Dimensions and manufacturing tolerances of valve body tapered stem/cylinder neck threads – 32T Type
6 Inspection gauges
7 Marking
Annex A (informative) Comparison between valve tapered inlet connections in this British Standard and the nominal sizes in BS 341‑1:1962 [Go to Page]
Table A.1 — Comparison between valve tapered inlet connections in this British Standard and the nominal sizes in BS 341‑1:1962
Annex B (informative) Guidance on the calculation of thread data given in Figure 3 to Figure 8
Annex C (normative) Gauging for taper threads [Go to Page]
Figure C.1 — Thread form for 16T plug and ring gauges
Figure C.2 — Thread form for 17T plug and ring gauges
Figure C.3 — Thread form for 18T, 19T and 26T plug and ring gauges
Figure C.4 — Thread form for 32T plug and ring gauges
Table C.1 — Thread taper ratios and angles
Figure C.5 — Inspection plug gauges for 16T, 18T, 19T, 26T and 32T
Table C.2 — Inspection plug gauges for 16T, 18T, 19T, 26T and 32T
Figure C.6 — Inspection plug gauges for 17T
Table C.3 — Inspection plug gauges for 17T
Figure C.7 — Inspection ring gauges for 16T, 18T, 19T, 26T and 32T
Table C.4 — Inspection ring gauges for 16T, 18T, 19T, 26T and 32T
Figure C.8 — Inspection ring gauges for 17T
Table C.5 — Inspection ring gauges for 17T
Figure C.9 — Check gauges for inspection ring gauges for 16T, 18T, 19T, 26T and 32T
Table C.6 — Check gauges for inspection ring gauges for 16T, 18T, 19T, 26T and 32T
Figure C.10 — Check gauges for inspection ring gauges for 17T
Table C.7 — Check gauges for inspection ring gauges for 17T
Figure C.11 — Use of inspection plug gauges
Figure C.12 — Use of inspection ring gauges
Figure C.13 — Use of check gauges
Bibliography [Go to Page]

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BS 341-1:2022 Gas cylinders. Cylinder valves - Threads for connection of valves to gas cylinders. Specification, 2022

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