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Bypass of the self-acting valve

2016-03-31View Original

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For the self-acting valve used for nitrogen sealing, can a bypass be added as required by the client, just like in ordinary control valves? Is that feasible?
Reply #22016-03-31
Few self-pressurizing valves that I have seen are equipped with a bypass. I think setting it up has only advantages and no disadvantages. But since it is \"self-powered,\" its importance isn’t that high; it’s fine if pressure isn’t applied during a fault.
Reply #32016-03-31
A bypass is usually added, taking maintenance into account.
Reply #42016-03-31
The site is crowded, and the piping looks unsightly. It’s usually not done; the first phase of the project doesn’t have any auxiliary lines either. People are afraid of being criticized by workers and of being laughed at by those in the industry.
Reply #52016-03-31
A secondary line is not necessary, but it can be disabled at any time as long as it does not interfere with maintenance.
Reply #62016-03-31
Bypasses should be added; otherwise, if there are problems with the control valve, production will have to be halted for repairs...
Reply #72016-04-03
Sure, a flow-limiting orifice plate can be installed on the branch line to prevent too high a flow rate through the manual valve. . .
Reply #82016-04-05
Self-acting pressure regulators are rarely considered for maintenance, and bypasses are generally not used. The owner demands it to be added; the owner is God: lol
Reply #92016-04-06
Thank you all for your help; after my repeated requests, the property owner agreed to compromise. Without the bypass and the front and rear cuts, it’s much cleaner.

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