Industrial-process control valves - Control valve terminology and general considerations Ingestion-build-279162 2 System preconditions

2 System preconditions

BS 6211 on ‘crawler tractor and crawler loader operator controls’ is useful for:

The tests described in this European Standard are type tests (for the storage of flammable liquids EN 14470‑1 is applicable – the criteria for failure are different – see Annex A)

and fatal electrical accidents occur only under very unfavourable conditions

Manufacturers of protected electrical equipment

Industrial-process control valves - Control valve terminology and general considerations Ingestion-build-279162 2 System preconditions1 Scope This part of IEC 60534 applies to all types of industrial process control valves (hereinafter referred to as control valves). This part establishes a partial basic terminology list and provides guidance on the use of all other parts of IEC 60534.