I am setting up a pipe spec which uses Swagelok tube fittings with the "two-ferrule, mechanical grip design". There is a front and back ferrule which are enclosed in a nut. A seal is formed when the nut tightens on the 2-ferrule assembly.
I was wondering how to represent it in a pipe spec. Should I keep all the components seperate, what "end conditions" should I use for the ferrules and would this sort of connection come under a "flanged" or "collared" auto-joint in Plant?
The connections are still basically threaded connections. We used these in AutoPLANT and I just built them using threaded fittings. I don't see a need to build them as a special connection since they are still male and female connections. You will just need to build the components per the cut sheets. There might have to be a work around for some of the components, but the general tube, fittings and valves should function just fine.