Replumbing Braided Vinyl with PEX?

Discussion in 'Plumbing Systems (The Fresh, The Blue, The Grey, &' started by NTL1991, May 9, 2018.

  1. NTL1991

    NTL1991 Member

    Apr 30, 2017
    Rhode Island, USA
    I'm pretty excited to get a new toy in the mail. It's a Milwaukee M12 ProPEX expander tool. It's used for installing PEX-A (Uponor) tubing with expansion fittings (no clamps). I bought it to do some new plumbing work in the house. It comes with expander heads for 1/2", 3/4" and 1" tubing.

    I just got through installing a new water heater in my Westlake and I do not like the cheap vinyl tubing, TONS of tee's, and hose clamps everywhere. I also do not like how the tubing is routed up through the floor from the tank, into the pump, then back down under the floor to get into the adjacent cabinet. Why not just go through from the inside?? Same for the hot water line... It looks like the drain lines under the front of the box are already piped in PEX from the factory. Weird.

    PEX would withstand higher pressures, not need any tightening of hose clamps, less prone to vibrations, better expansion if it ever did freeze up, and is more chemically stable and won't impart any plastic "taste" to the water if we use city hookups. (We don't drink from the onboard tank).

    I drew up a little diagram with the existing plumbing layout on top, and a slightly revised one on the bottom.

    Westlake Plumbing.jpg
  2. crackerJack

    crackerJack Well-Known Member

    Jan 6, 2014
    Scottsville, KY
    Cool, PEX is definitely a superior product.

    I repiped my camper with no low spot traps. It can all be drained and blown out with an air compressor. No pumping of antifreeze is necessary.
    JPBar likes this.
  3. Dan from Troup

    Dan from Troup Well-Known Member

    Apr 25, 2018
    Troup, Texas
    When I recently bought my camper some of the paperwork included an invoice for replumbing with PEX. At first I thought they had mistakenly included something from their house repair. When I looked in the cabinets I saw all the red and blue water lines. The invoice was for 700.00. When I was under the camper foaming voids in floor penetrations I saw a capped off hot and cold stubbed thru the floor. Wonder why the plumber did that since it already has an outdoor shower? It's near the outdoor shower under the PUP. IMG_20180527_132447936.jpg
  4. dak2

    dak2 Member

    Aug 18, 2007
    Low point drain lines
    Dan from Troup likes this.
  5. Dan from Troup

    Dan from Troup Well-Known Member

    Apr 25, 2018
    Troup, Texas
    Thanks, looks like a good thing to have when winterizing.
  6. Sneezer

    Sneezer Well-Known Member

    Aug 8, 2015
    DFW, TX
    Cool. Mine has PEX in it, but I don't have the luxury of blue and red lines, they are all the same color. I had to add a section to fix a leak - city water input went bad so I had to replace it and cut out a section to do it. I used a combination of PEX and sharkbite fittings, as there is no room behind my rear bulkhead to work unless I remove both cabinets and the interior wall.

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