Quote: (Originally Posted by
tibby)
Thanks Jerry, I apreciate the post and clarification on the part's history. I am now confident ISC will look into this issue and soon fix it. I promised I will try to duplicate and document the behaviour but failed to do it properly. All I can tell so far with confidence is that my connector leaks when exposed to temperatures between 15 to 8 deg F but I don't know when (what temp) it actually starts or stops leaking.
I really don't think the brand is that important (although I come across that way in my previous post) as long as it doesn't leak. I should know better than commenting about things before having all the facts.
Tibby
Tomco/Hylock I was unsure. Thanks for the clarification Jerry. The part I had trouble with was the male "quill" which leaked upon disassembly from new on my COPIS meg. The change from Hylock to Swagelok seemed to correct the problem, and the Swagelok part appears more durable and better engineered internally.
Forgive me, but based on my background information (QA and materials process related) the passivation process utilized is only in place to eliminate post processing impurities on the stainless componentry, thereby possibly assisting in the prevention of oxidation (rust). Unless I misread his post, Jerry stated that the knob on the Swagelok part has not been passivated in the past. What concerns would the elimination of this process cause on the internal components where the leakage must occur? Tibby, have you pinpointed the location of leakage encountered? Was it male or female part, or internally after assembly? Pressurized or unpressurized? There are many variables to consider here.