Repair Coupling


  #1  
Old 10-23-23, 07:07 PM
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Repair Coupling

I've used the slide coupling to repair constant pressure PVC.


I've also used the compression fittings.


I just found this, which is a little more difficult to source but has the advantages of a purely glued fitting, not relying in any type of rubber seal. I need to do a repair that will not be accessible (will be under concrete).

https://dawnindustries.com/products/kwikrepair

Any opinions on the best one to use?
 
  #2  
Old 10-24-23, 03:01 AM
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What is "constant pressure PVC"?

If repairing PVC pipe what's wrong with a standard coupling?
 
  #3  
Old 10-24-23, 06:27 AM
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Constant Pressure PVC, i.e. a supply run or similar, not a sprinkler line that has a duty cycle. For example the 18" flexible repair couplings that you are able to bend to insert between two immovable pipes are not meant to have constant pressure on them. Thus, they are only to be used after a control valve.



A standard coupling would not work as the 2 ends of the original pipe are immovable (in the ground).
 
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Old 10-24-23, 08:15 AM
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The top two couplings in your post use O rings to form the seal. So, I'd probably go with the third one.
 
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Old 10-24-23, 10:31 AM
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Depending on the repair you need to do, you can get standard PVC couplers with no stop in them. Then it'll be fully cemented. For 1" or 2" pipe I'd use these. For anything larger, it's much more difficult to keep the cement from seizing before it's fully slipped in place.

Example:
https://www.supplyhouse.com/Spears-4...No-Stop-Socket
 
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