ChE Forums > When Is A Depressuring Valve Required?

Full Version: When Is A Depressuring Valve Required?

ChE Forums > Relief Devices > Relief Devices Forum

Sep 20 2005, 04:56 PM

I don't have a copy of API 521, but I'm hoping that the answer is in there and that someone will pass it along.
Here's the question. Emergency depressuring valves are recommended for systems comprised primarily of vapour (i.e. compressor systems, etc.). Is there a pressure below which depressuring valves are not considered necessary?

Thanks,
RJ

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