HG/T 4176-2011Pneumatic triple-offset butterfly valves - General technical specifications (English PDF)

HG/T 4176-2011 is the English-translated version of 气动三偏心蝶阀通用技术条件.

The general technical specification for pneumatic triple-offset butterfly valves is HG/T 4176-2011, a recommended standard of the Chinese chemical industry. It provides the terms and definitions and the classification of these valves, then states the requirements, the test methods, the inspection rules and the rules for marking, packaging and storage. It is written for pneumatic triple-offset butterfly valves with hard seals, composite seals or soft seals, and extends to the selection of the pneumatic actuator. The documents it quotes include GB 150, GB/T 12220, GB/T 12224, GB/T 12229, GB/T 12230, GB/T 13384, GB/T 17213.2, parts 1 to 10 of JB/T 4730 and the earlier JB 4730-1994. Issued on 20 December 2011, it has applied since 1 July 2012.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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