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Twin Tube system in concrete

Craig_5
Craig_5 Member Posts: 1
I looked at a job today that has 1/4 inch non oxygen barrier tubing embedded in concrete throughout a 3000 sq ft home. The owner tells me it is called Twin Tube and I can't find any thing on the web about the product. The boiler and piping system is rotting away and I would really like to find out the life expectancy of the tube before I break into this mess.

Comments

  • kevin coppinger_4
    kevin coppinger_4 Member Posts: 2,124
    is it twintran?

    there was a epdm rubber tube that heatway had called twintran..i think it was 3/8" tubing....lots of problems w/ the entran2...maybe a cousin...kpc
  • John Felciano
    John Felciano Member Posts: 411
    Is it

    Twin tran?

    I ran into the same stuff a few years ago also.The system was suffering from serious O2 problems.There was quite alot of rust in the copper near boiler piping and components.I suggested to the owner he isolate the system or at least treat the fluid.

    As far as the life of the tubing I haven't seen that much of it, but what I have seen looks to be in good condition and is still very pliable.Just doesn't have a barrior.

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  • hr
    hr Member Posts: 6,106
    A trio of twins

    Bio Energy "Solar Roll" was one, a thin walled black tube. Heatway "twin Tran" was another. Most was orange, or faded orange :) A thicker walled product.

    Solar roll has a funky manifold, looks like the tube just disappears into the copper pipe :) Fairly easy to identify.

    Twintran had a stainless OEM screw type of clamp. The nut to tighten the clamp is metric sized, by the way. They needed an ocassional re-torque job!

    There is a third used in some greenhouse applications. Comes out of CA somewhere. A larger, black 1/2" id, much larger than the other two.

    Here are some pics.

    How old is the system? I'd guess 15 years old. You may choose to seperate the tube with a HX, but I'd bet the ferrous components are pretty compromised at this point. (Yank a pump motor from it's volute for an indication) Unless a corrosion inhibitor has been used, and maintained.

    Be careful on these old non barrier systems, you may get in pretty deep!

    hot rod

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