BS 7461:1991
Current
The latest, up-to-date edition.
Hardcopy , PDF
English
09-30-1991
Committees responsible
Foreword
Specification
1 Scope
2 Definitions
3 Valves fitted with throughput adjusters
4 Valves fitted with proof of closure switches
5 Valves fitted with closed position indicator switches
6 Valves incorporating start-gas flow control and
valves in which the flow rate may be varied
electrically
Appendices
A Test for valves fitted with throughput adjusters
B Test for valves fitted with proof of closure switches
C Test for valves fitted with closed position
indicators
D Tests for valves incorporating start-gas flow control
and in which the flow rate may be varied
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