Welcome to Plbg.com
Thank you to all the plumbing professionals who offer their advice and expertise

Over 696,600 strictly plumbing related posts

Plumbing education, information, advice, help and suggestions are provided by some of the most experienced plumbers who wish to "give back" to society. Since 1996 we have been the best online (strictly) PLUMBING advice site. If you have questions about plumbing, toilets, sinks, faucets, drains, sewers, water filters, venting, water heating, showers, pumps, and other strictly PLUMBING related issues then you've come to the right place. Please refrain from asking or discussing legal questions, or pricing, or where to purchase products, or any business issues, or for contractor referrals, or any other questions or issues not specifically related to plumbing. Keep all posts positive and absolutely no advertising. Our site is completely free, without ads or pop-ups and we don't tract you. We absolutely do not sell your personal information. We are made possible by:  

Post New
Log In
How to Show Images
Newest Subjects
 Union for 1/2" copper water line?
Author: Dan0 (TN)

I need to tee into an existing water line and I was thinking of adding a union.
The reviews I've read on the Box Store websites are mixed.
I see a number of complaints about leaks.
Any recommendations... brand or style?


Post Reply

 Re: Union for 1/2" copper water line?
Author: bsipps (PA)

If installed properly and plumb they will not leak
A little pipe dope on the matted face never hurts

Post Reply

 Re: Union for 1/2" copper water line? clap
Author: Dan0 (TN)

Thanks, yeah I think that's the key. HD had a good video where they recommended paraffin wax or silicone spray on the mated surfaces. I think this allows the surfaces to slip into the best position.

Thanks again...

Edited 1 times.

Post Reply

 Re: Union for 1/2" copper water line?
Author: bsipps (PA)

The lubricant or pipe dope only helps to seal the imperfections in the mated surface

Post Reply

Please note:
  • Inappropriate messages or blatant advertising will be deleted. We cannot be held responsible for bad or inadequate advice.
  • Plbg.com has no control over external content that may be linked to from messages posted here. Please follow external links with caution.
  • Plbg.com is strictly for the exchange of plumbing related advice and NOT to ask about pricing/costs, nor where to find a product (try Google), nor how to operate or promote a business, nor for ethics (law) and the like questions.
  • Plbg.com is also not a place to ask radiant heating (try HeatingHelp.com), electrical or even general construction type questions. We are exclusively for plumbing questions.

Search for plumbing parts on our sponsor's site:

Special thanks to our sponsor:

Copyright© 2023 Plbg.com. All Rights Reserved.