NPT fittings in an AC system?
NPT fittings in an AC system?
(OP)
If you folks were to review a design for a vehicle AC system that included a manifold with NPT connections, what would you say? Seems to me that NPT is a bad choice for moving R-134a, won't it bleed out over time.(even with pipe dope)
Correct me if I'm in error.
thanks
Correct me if I'm in error.
thanks





RE: NPT fittings in an AC system?
RE: NPT fittings in an AC system?
RE: NPT fittings in an AC system?
Since they are already there, you need to clean them well and coat them with A Loctite product specifically for refrigerant service. It will hold pretty well and can be heated to remove the plug later.
Ken
Ken
KE5DFR
RE: NPT fittings in an AC system?
The short answer is someone that has no buisness designing things specified a manifold with NPT connections.
RE: NPT fittings in an AC system?
RE: NPT fittings in an AC system?
Thanks for your input. Are the manifolds you are referring to "in-line" (ie) constantly presurrized or are you talking gage manifolds for checking the high and low side as a diagnostic tool?
RE: NPT fittings in an AC system?