I have a design application that utilizes a lantern ring in a stuffing box with packing to seal a shaft that rotates in a reciprocating fashion. We are currently building a machine for a European customer and are required to use ISO (metric) thread profiles. Our standard design (imperial...
I know from having done PV code calcs that wall thickness is, in almost all cases, governed by hoop (circumferential) stress in thin wall cylindrical shells. In the case of ASME pressure vessel calcs, the hoop stress and longitudinal stresses are considered mutually exclusive and the wall...
Thanks for the comments, Pavel. Since the cylinder is considered thin-walled, radial stress (shear) is not considered and so I am left with hoop stress and longitudinal stress. ASME code considers these stresses independent of each other and seemingly mutually exclusive when determining the...
Like the others, I'm having a tough time understanding the question or problem at hand.
The butt weld flange to which you refer is commonly called a weld neck flange and the bore of the flange can be specified at time of order so the flange bore matches the pipe bore. 6" 300# RFWN, A-105, ASME...
I know from having done PV code calcs that wall thickness is, in almost all cases, governed by hoop (circumferential) stress in thin wall cylindrical shells. Can someone help me understand why longitudinal and circumferential stresses are treated as mutually exclusive and not additive?
I'm...
I have a need to machine a custom fitting for a Sect. VIII, div 1 vessel. The fitting will be similar to a socket weld coupling and welded to a vessel shell. I would normally use an SA-105 grade fitting for this but am looking to make the part from a readily available grade of carbon steel bar...
