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
| Fecha edición: |
1991-09-30
En Vigor
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|---|---|
| Idiomas disponibles: | Inglés |
| Resumen: | 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.
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| ICS: | |
| CTN: | GSE/22 - GSE/22 |
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Reemplazo Normas |
Reemplaza a BS 5963:1981 |










