Threaded Pipe Connection Between Different Metals
Threaded Pipe Connection Between Different Metals
(OP)
I have an aluminum filter housing that needs to connect to a pumped drain system made of copper. When the system is in use, it will operate at about 140F. Thread size is 2" NPT.
What connection should I make between the two materials? I'm concerned about threaded joint leakage due to differing expansion coefficients, as well as possible galvanic action.
I posted this on the Piping and Fluid forum, but it was ignored.
---KenRad
What connection should I make between the two materials? I'm concerned about threaded joint leakage due to differing expansion coefficients, as well as possible galvanic action.
I posted this on the Piping and Fluid forum, but it was ignored.

---KenRad





RE: Threaded Pipe Connection Between Different Metals
RE: Threaded Pipe Connection Between Different Metals
RE: Threaded Pipe Connection Between Different Metals
---KenRad
RE: Threaded Pipe Connection Between Different Metals
Unless I'm missing something, you should be able to get a standard dielectric union from a plumbing supply place to handle those two specific metals.
Good luck with it, let us know what you find out!
Old Dave
RE: Threaded Pipe Connection Between Different Metals
Good luck, CB