B16.9 Pipe Cap

[Ed555]

If a nozzle is to be welded to a standard pipe cap, should the pipe cap now be calculated as a 2:1 elliptical head instead of straight pipe since it is being modified from its original form?

 

[LittleInch]

Yes I believe so as there is no allowance for cuting holes and welding to fittings in B16.9 as far as a I can see, unlike e.g. a blind flange.

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[r6155]

You need to calculate the required nozzle neck thickness and the reinforcement (ASME VIII-1 UG-45 and UG-37)

Regards