Polybutylene pipe insert

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Rsmith99

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Are metal pipe stiffener inserts still available for polybutylene pipe? I’m wanting to use a compression fitting.
These inserts are larger than the PEX inserts.
Thanks!
 

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Reach4

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What makes you think that PB is compatible with a regular compression fitting? I am not saying that it is not, but I would be suspicious unless you find good info to the contrary.
 

Rsmith99

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What makes you think that PB is compatible with a regular compression fitting? I am not saying that it is not, but I would be suspicious unless you find good info to the contrary.
Other people on this forum say they are. I have three that I have installed in my house that are working fine. I just don’t have the inserts.
Thanks for your input!
 

Storm rider

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Inserts are available for PE, but I don't know if they would work on PB or not. SharkBite has inserts for PB that work with their fittings. I know that is not the direction you are trying to go, but it is a viable solution.
 

Rsmith99

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Inserts are available for PE, but I don't know if they would work on PB or not. SharkBite has inserts for PB that work with their fittings. I know that is not the direction you are trying to go, but it is a viable solution.
This is under a kitchen sink, so nobody sees it. I have always been leery of SharkBite fittings. I just didn’t think they would hold up. Are they widely used?
 

Jadnashua

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A sharkbite fitting, properly installed, works. They probably shouldn't be your first choice, mostly because they are a lot more expensive than more conventional solutions, but their advantage is that they are fast. They have passed all codes to be used in both hidden and open locations.

Three things with using a SharkBite (and any other, similar product):
- the pipe must be undamaged - it seals with an o-ring, nicks, dents, or scratches can prevent that from sealing
- the end must be smooth with no burrs and square cut to the pipe otherwise, it might damage the o-ring during installation - they sell a deburring tool that's a good idea, but not necessarily required
- you must insert it the full depth.
 

Rsmith99

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A sharkbite fitting, properly installed, works. They probably shouldn't be your first choice, mostly because they are a lot more expensive than more conventional solutions, but their advantage is that they are fast. They have passed all codes to be used in both hidden and open locations.

Three things with using a SharkBite (and any other, similar product):
- the pipe must be undamaged - it seals with an o-ring, nicks, dents, or scratches can prevent that from sealing
- the end must be smooth with no burrs and square cut to the pipe otherwise, it might damage the o-ring during installation - they sell a deburring tool that's a good idea, but not necessarily required
- you must insert it the full depth.
Thanks for the info. Not sure if poly is clean enough to seal correctly or not.
 
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