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  1. Vermontphil New Member

    joined: Jan 26, 2013
    2 posts
    Vermont
    Just joined this forum. I have read previous threads on epdm liners for large tanks with people who have been using this with success. But as I understand there is not a lot of spec data that supports high temp use. Been looking on line at pvc and epdm trying to find products that have specs to support high temperatures. I will be operating in a range of 110 to 170. Anyone one know of sheet liner products that have specs to this. And of course are not outrageous in price.
    #1

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  2. maple1 Minister of Fire

    joined: Sep 15, 2011
    1,955 posts
    Nova Scotia
    Try searching americansolartechnics (not sure I got that quite right) - or forum member Tom In Maine.
  3. kopeck Feeling the Heat

    joined: Mar 24, 2011
    364 posts
    Maine
    PVC is good for 180 continues 190 intermittent.

    Like maple said, check with Tom, it's what he does.

    K

  4. http://americansolartechnics.com/

    I also have information on home made tank construction if your interested .
  5. tom in maine Minister of Fire

    joined: Apr 4, 2008
    610 posts
    Searsport, Maine
    We now manufacture high temperature PVC liners in house. They are heat welded and solvent welded.
    They are not the cheapest date around, but after a lot of messing around with having other companies fabricate for us, we feel we offer one of the best liner choices.

    That being said, EPDM is cheap, it is readily available and it will last reasonably long if you keep the temps down.
    It is very important to monitor the water pH. If EPDM starts to breakdown, it can attack copper heat exchanger coils.
    This is not an issue with PVC. It does not break down as it ages. PVC can become brittle as it ages. We, however, have not seen this in our tanks. Our oldest PVC lined tanks are 28+ years old.
    We also double line everything leaving here. It is a redundancy that ensures longevity, although the oldest tanks are all single lined.
  6. henfruit Minister of Fire

    joined: Nov 27, 2007
    543 posts
    New Hampshire-Maine border
    It works great for stock tanks also.Just ask my donkeys,they love it.
  7. tom in maine Minister of Fire

    joined: Apr 4, 2008
    610 posts
    Searsport, Maine
    LOL, I forgot about that. We made Henfruit an insulated stock watering tank with a polyethylene liner.

    As I recall, one of the critters (goats?) was trying to eat the liner!
  8. kopeck Feeling the Heat

    joined: Mar 24, 2011
    364 posts
    Maine
    I guess you folks really do "Custom Work"! ;)

    K

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