What is the difference between a union and a coupling (I saw a union has a nut in the middle)? Also, is there a compression fitting to join two pieces of 1/2 inch copper pipe? I am adding a section for my new laundry sink, and would prefer to avoid sweating them if I can. Thanks.
On 12/28/04 "Eric and Megan Swope" snipped-for-privacy@verizon.net asks in part
nut in the middle)?
The nut in the middle allows the fitting to be taken apart without disturbing the soldered or threaded joints on either end.
Yes, look for a 5/8 compression union.
Doug
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