Regulating valve standards and performance

2009-04-14View Original

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Standards and performance of control valves: New national standards for control valves. The national standard GB4213-84 for pneumatic control valves, titled \"General technical requirements for pneumatic control valves,\" was issued on March 21, 1984, and came into effect on January 1, 1985. This standard was revised again in 1992; the revised standard was designated as GB/T4213-92 and came into effect in October 1993. This standard is primarily based on IEC international standards, and formulated in consideration of China’s specific conditions. The previously applicable departmental standards become invalid as of the date of implementation of the new national standards.

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Regulating valve standards and performance

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