Hygienic Union Loads
Hygienic Union Loads
(OP)
I’m wanting to model hygienic unions (bolted clamp joint) in a stress analysis program (Algor) during the line sterilization process (185 deg. F). Code is ASME BPE & B31.3. Mostly 4 and 6 inch size. The major manufacturers say that there is no available data for allowable forces and moments resolved to the center of the union. I can model the union as a valve block to examine system flexibility and system stresses, but I don’t know if the moments and forces at the union are too high. It could be that the joint will accept any loads that the piping can, but the manufacturers have not made that statement. Any comments or suggestions?





RE: Hygienic Union Loads
RE: Hygienic Union Loads
RE: Hygienic Union Loads
If you really want to check for flange moments it is possible to use the equivalent pressure method (the Kellogg method) similar to that used for flanges but with gasket data and diameter as for the clamp. The resultant pressure can then be compared with the rating table of ASME BPE.
regards
Mogens