GrumpyPlumber
Licensed Grump
Regarding the original thread NEVER EVER use epoxy, glue or any solvent on metal to metal.... it'll go from temperature expansion & contraction...copper expands & contracts at a completely different rate than plastic or other substances.
As for the never-ending debate on compression (yup...we debate that in my state too). The reason I was first taught to not use compression was it's not intended for use on harder type "L" copper, but inspectors pass it all the time.
I personally prefer to sweat the 1/2" inlet because I don't like the idea that I could possibly rotate it while tightening the 3/8" compression feeds...it's all a matter of personal taste.
When it comes to the older 3/8" threaded nipples...I use two channel locks and say a prayer before I start.
There are also the fine threaded 3/8" nipples that are mostly obsolete, but pop up in older homes...first thing I do is recommend to the homeowner they let me replace as much of it as they can afford...using reem adaptors.
As for the never-ending debate on compression (yup...we debate that in my state too). The reason I was first taught to not use compression was it's not intended for use on harder type "L" copper, but inspectors pass it all the time.
I personally prefer to sweat the 1/2" inlet because I don't like the idea that I could possibly rotate it while tightening the 3/8" compression feeds...it's all a matter of personal taste.
When it comes to the older 3/8" threaded nipples...I use two channel locks and say a prayer before I start.
There are also the fine threaded 3/8" nipples that are mostly obsolete, but pop up in older homes...first thing I do is recommend to the homeowner they let me replace as much of it as they can afford...using reem adaptors.
Last edited: