Joint efficiency
Joint efficiency
(OP)
Design pressure is 6500 psig and diameter of cylinder is 3". The top of cylinder is closed with threaded cover. The thickness of cover can be calculated per UG 34 of ASME Div.1. Since material is forged aluminium alloy,only Div.1 can be used.
Threads will be taper pipe threads per Table UG-43. However to calculate the required threaded length, what threaded joint efficiency should be used. Could some one provide some reference.
Thanks!
Threads will be taper pipe threads per Table UG-43. However to calculate the required threaded length, what threaded joint efficiency should be used. Could some one provide some reference.
Thanks!





RE: Joint efficiency
Mike
RE: Joint efficiency
RE: Joint efficiency
You are exempt. Or are you stamping as a contract requirement?
ASME: Always-Sometimes-Maybe-Except
PED: Pain Every Day
RE: Joint efficiency
http://www.parrinst.com/default.cfm?page_id=92
RE: Joint efficiency
A place I used to work made small vessels for up to 10,000 psi and would use an acme threaded ring bearing on a (non-rotating) plug sealed with an o-ring. You didn't have tighten the plug godawful tight to get a seal.
Regards,
Mike
RE: Joint efficiency
The original question was about if a threaded cover were to be used, what would be the joint efficiency to be used in design?
I'm keen to know, too.
RE: Joint efficiency
Regards,
Mike
RE: Joint efficiency
RE: Joint efficiency
The cylinder is being designed per ASME Section VIII Div. 1 with threaded cover per UG-34 and threaded length per Tbale UG-43. Threade are being used pipe taper threads with 'O" ring for sealing. Vessel will be registered as Fitting per CSA B51.
Thanks everyone for input