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Mixing Pex types

ChrisJ Member Posts: 15,493
Kind of an odd question maybe.

Is there anything wrong with using Pex A with clamp type connectors that are typically used with Pex B?

My reasoning is where we work we already have the tools, rings and fittings for the clamp type, but I hate trying to straighten Pex B where Pex A generally straightens on it's own.

Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment


  • GGross
    GGross Member Posts: 974
    Generally speaking pex A will already have the approval for crimp type connections. Specifically Uponor pipe does have this rating listed on the side of the pipe. You will see it labeled somewhere "F1807" So far I have not found a pex that does not have that F1807 number as an approved fitting method.

    One thing to note is that the pex manufacturer may offer a different warranty when using their system complete, I am not sure how firm that is as it has never come up for me
  • hot_rod
    hot_rod Member Posts: 21,878
    You can also get 20’ straight lengths for short straight runs.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream