Are there any requirements for the length of the straight pipe section before and after installing a pneumatic control valve?

2019-11-20View Original

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Are there any requirements for the straight pipe sections before and after the pneumatic control valve? The straight pipe section of the flow meter is four times the diameter in front and five times the diameter behind

Reply #22019-11-21

I’ve never heard of straight pipe sections before and after the control valve.

Reply #32019-11-25

There are no requirements for control valves, but there are requirements for flow meters.

Reply #42019-11-28

There is a requirement – Metso’s engineering manual; it seems the requirement is 2D diagrams at the beginning and 2D diagrams at the end!

Reply #52019-12-04

Ordinary valves have no requirements for the straight pipe sections before and after them! ! !

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Are there any requirements for the length of the straight pipe section before and after installing a pneumatic control valve?

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