Hi All,

I have a question related to internals on one of the vessel which I designed.

The vessels rating is 150 # and there is a 2" pipe (internal pipe) connecting two nozzles inside the vessel. As a process requirement a high pressure gas will be passed inside this pipe. By looking into the design condition of the gas passing in, i found that it falls under 900#. Hence i decided the nozzle to have 900#. My problem is that, if i provide break flanges for this internal pipe......can I go for a plate flange or should i go for a B16.5 flange?

If i am opting to go for plate flange, then how can i justify my client that its good enough to handle the dissimilar pressure?


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