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sklademVydáno: 1991-09-30
BS 7461:1991
Specification for electrically operated automatic gas shut-off valves fitted with throughput adjusters, proof of closure switches, closed position indicator switches or gas flow control
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| Označení normy: | BS 7461:1991 |
| Počet stran: | 10 |
| Vydáno: | 1991-09-30 |
| ISBN: | 0 580 19830 8 |
| Status: | Standard |
DESCRIPTION
BS 7461:1991
This standard BS 7461:1991 Specification for electrically operated automatic gas shut-off valves fitted with throughput adjusters, proof of closure switches, closed position indicator switches or gas flow control is classified in these ICS categories:
- 23.060.20 Ball and plug valves
This standard specifies the requirements and test methods for throughput adjusters, proof of closure switches, closed position indicator switches, start-gas flow control and electrical variation of flow rate when fitted to electrically operated automatic gas shut-off valves which themselves fall within the scope of BS EN 161.
NOTE The titles of the publications referred to in this standard are listed on the inside back cover.
Additional requirements and test methods. Supplements BS EN 161.