This standard specifies the requirements for the inspection and routine testing of control valves manufactured in conformity with the other parts of IEC Publication 534. When specified, the inspection and test requirements shall be taken from this part in conjunction with any additional information required by Sub-clause 2.1 or a code of practice stated by the purchaser.
This standard does not apply to the types of control valves where radioactive service, fire safety testing, or other hazardous service conditions are encountered. If a standard for hazardous service conflicts with the requirements of this standard, the standard for hazardous service shall take precedence.
This standard is applicable only to valves with pressure ratings not exceeding PN 100 (Class 600).
SIS SS IEC 534-4:1988 history
1988SIS SS IEC 534-4:1988 Industrial-process control valves — Inspection and routine testing