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TXV insulation, how much

Posted: Tue Aug 18, 2026 5:23 pm
by northbay
Hello,
On an old car with the expansion valve entirely in the engine bay, does the whole brass body need to be wrapped in cork tape or just the bulb? What about the dome and the capillary tube, should those be wrapped as well?

thanks

Re: TXV insulation, how much

Posted: Tue Aug 18, 2026 6:15 pm
by Tim
We taped up to any rubber hose.

Re: TXV insulation, how much

Posted: Wed Aug 19, 2026 10:01 am
by Dieseltech67
I had posed similar question but it was about covering it with ducting tar stop condensation as it is inside an Excursion and causing water issues. John replied that was ok.
OP.., I think Tim is saying it is ok to cover it.