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English Translations » 信息处理 » What is the allowable back pressure percentage for a pilot-o

What is the allowable back pressure percentage for a pilot-operated breathing valve?

2011-01-05View Original

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I once encountered a pilot-operated breathing valve with a back pressure of 25 Kpag and a set pressure of 29 Kpag. The supplier thought there was a problem, so I asked what the allowable percentage of back pressure for such a valve is
Reply #22011-01-06
Pilot-operated safety valve, with a back pressure not exceeding 60% of the valve’s set pressure. “See Volume 1 of the Process Piping Installation Design Manual”
Reply #32016-12-10
The back pressure of a pilot-operated breathing valve should not exceed 60%, as this has no impact on the proper operation of the valve.

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Translated at 2026-07-24 19:55:25

Original: https://bbs.hcbbs.com/thread-785040-1-1.html

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