Standard No.:	GB/T 12222-2005
Chinese Name:	多回转阀门驱动装置的连接
English Name:	Multi-turn valve actuator attachments
Professional Classification:	J16 Valve
Professional Classification:	GB National Standard
ICS Classification:	23.060.01 Valves in general
Issued by:
Issued on:	2005-02-21
Implemented on:	2005-08-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:
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1 Scope
This Standard specifies terms and definitions of multi-turn valve actuator, flange type and corresponding maximum torque and maximum thrust, flange dimensions connecting valve, driving component structure and dimensions.
This Standard is applicable to the valve actuators for gate valves, stop valves, throttling valves, diaphragm valves and the valves dimensions necessary for the attachment. Such dimensions are also applicable to the attachment of actuator to gear case and the attachment of gear case to valves.

2 Normative References
The following Standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. For dated reference, subsequent amendments (excluding corrigendum) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents apply. For any undated references, the latest editions apply.
GB/T 196 General purpose metric screw threads—Basic dimensions
(GB/T 196-2003, ISO 724:1993,MOD)