PEX - minimum pipe length between fittings (with copper crimp rings)

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Daniel Cunningham

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I’m installing some 1/2” PEX and connected 2 fittings using copper rings with a very short piece of PEX (just over 1-3/4” long).

After installed I Googled and can find minimum length for when using expansion system would be 2” long for 1/2” pipe, but can’t find any details when using copper crimp rings.

Is there a minimum pipe length when using crimps?
Do I need to cut this out and connect with a longer piece of pipe?
 

Reach4

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I don't find any such minimum for crimp rings. It makes sense that you would need a minimum for expansion fittings, but not with crimp or clamp.
 

Tuttles Revenge

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With crimp style PEX you can "dry fit" your pipe onto your fittings.. The max insertion for the two fittings will be the minimum distance of tubing.
 
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