Are there any standard requirements specifying that a branch control valve must be installed on each branch of the air duct system?

2016-10-17View Original

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As the title suggests, there is a device that contains 3 pneumatic solenoid valves; when instrument air arrives, it is supplied to these valves through an instrument air pipeline and various branch pipelines. The problem now is that a shut-off valve has only been installed on the instrument air main bus, while none have been installed on the branches. Is it necessary to install one for each branch?

Reply #22016-10-17

I checked the standard HG/T20510-2014; it requires that each branch indeed be controlled by a ball valve. Moreover, three gas supply methods are provided.

Reply #32016-10-17

Wow, you solved it on your own – give yourself some encouragement. Can you post the answer?

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Are there any standard requirements specifying that a branch control valve must be installed on each branch of the air duct system?

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