Black Pipe to PEX

Reply

  #1  
Old 09-07-11, 02:55 PM
Banned. Rule And/Or Policy Violation
Thread Starter
Join Date: Feb 2011
Location: US
Posts: 75
Received 0 Votes on 0 Posts
Black Pipe to PEX

I'm replacing part of my hot water radiator system that was connected with black pipe. It hung down 8" or so from the basement ceiling and I'd like to run PEX through the joists to get more headroom. I removed the black pipe and left 1" male threaded pipe connected to the radiators. I picked up some brass PEX to female threaded adapters (these).

They fit but as I was putting them on I realized I had dissimilar metals connecting. Should I use a 1" to 1" dielectric union or is there another way to separate these metals? Edit: Or is brass to black pipe not a problem at all?
 

Last edited by HomeAlterations; 09-07-11 at 03:15 PM.
Sponsored Links
  #2  
Old 09-07-11, 05:02 PM
hvactechfw's Avatar
Member
Join Date: Jan 2011
Posts: 6,245
Received 0 Votes on 0 Posts
first make sure you buy oxygen barrier pex. Dielectrics tend to fail after a while due to the rubber gasket drying out and failing. I would be more likely to just use the brass adapter without the use of the union. Just my opinion, we will see what the others have to say.
 
  #3  
Old 09-07-11, 05:46 PM
Member
Join Date: Mar 2006
Location: Wet side of Washington state.
Posts: 18,489
Received 32 Votes on 24 Posts
The brass adapter is fine but be absolutely certain you use an oxygen barrier PEX.
 
  #4  
Old 09-08-11, 08:21 AM
Banned. Rule And/Or Policy Violation
Thread Starter
Join Date: Feb 2011
Location: US
Posts: 75
Received 0 Votes on 0 Posts
Thanks guys, and I did buy barrier PEX. It think I'm set.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes
 
Ask a Question
Question Title:
Description:
Your question will be posted in: