My plumber did this and I'm finding it hard to search about, asking for my next project.

Here's an example: the 1/2" side of this fitting is 1/2" male NPT, but you can also sweat a 1/2" copper pipe to the inside.

I've seen other references to this practice but I'm just wanting to know if it's taught in trade schools? Or is it regarded as a hack?

  • 1
    It is literally listed for that purpose. Using a product according to its labeling and instructions may be a hack, but it's not an illegal one. – Harper - Reinstate Monica Oct 9 '18 at 19:55

I would not call it a hack it is more expensive and due to the metal thickness takes a bit longer to sweat but works fine. Possibly a little better as the brass will hold up better than a copper male fitting.

| improve this answer | |

Inexpensive 1/2" multi-turn valves with "washer" type seals with 1/2" MIP threads can be and often are sweated directly to 1/2" copper tubing. So the makers of these parts have long realized that this option could be made available if the inside was made the correct size for copper tubing.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.