Originally Posted by Mike Leary
Not that I like them that much, the body should be upstream with the extender fully extended down stream. Seems to me, unions or the four 90s would be a better choice.
A union on a line break repair? I can see the 4 90's so you can bend some pipe, but a union? How do you stretch pipe to mate the union?
I've used telescoping repair couplings on pipe up to 3" 70 PSI; body upstream and fully extended. No problems... yet.