This part of GB/T17213 specifies the inspection and routine test requirements for control valves manufactured in accordance with other parts of GB/T17213. This section is only applicable to the control min whose pressure level does not exceed PN420 (2500 level). The requirements for actuators apply only to pneumatic actuators. This section does not apply to various control valves used in radioactive working environments, fire test environments or other hazardous working environments. If the relevant standards involving hazardous working environments conflict with this part, the standards shall prevail. Note: Through negotiation between the buyer and the manufacturer, this standard can be applied to higher pressure ratings.
GB/T 17213.4-2015 history
2016GB/T 17213.4-2015 Industrial process control valves - Part 4: Inspection and routine tests
2005GB/T 17213.4-2005 Industrial-process control valves.Part 4:Inspection and routine testing