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Non standard orifice in PSV

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edanyel

edanyel

Petroleum
Joined
Sep 15, 2004
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29
Location
AR
In the plant I work i have a 0.06 sqin orifice PSV.
This is outside the standard areas we find in API st526/ rp520.
where do I find information about these small area orifices?
Any help will be helpfull
Thanks in advance
 
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API only lists orifice sized for standard flanged valves. The best thing to do is to contact the valve manufacturer for technical information. If the valve has an ASME Code stamp then it should be listed in the National Board "Red Book".
 
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