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MOONSTRUCK Member Posts: 2
edited July 9 in Solar

Existing copper piping in a solar system with tank & accumulator .

Thinking of repairing with pex , where accessible


  • Jamie Hall
    Jamie Hall Member Posts: 22,175
    Watch your temperatures. Remember that PEX gets real floppy when it gets to warm, and the bursts when it gets even warmer. What is the absolute maximum temperature those pipes can reach?
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Robert O'Brien
    Robert O'Brien Member Posts: 3,522
    Not for this application! Not rated for temperatures
    To learn more about this professional, click here to visit their ad in Find A Contractor.
  • Larry Weingarten
    Larry Weingarten Member Posts: 3,142
    Hi @MOONSTRUCK , What type of solar collectors do you have? Are they the typical copper collectors in an insulated, glazed box?

    Yours, Larry
  • hot_rod
    hot_rod Member Posts: 20,826
    Stick with copper or other metallic piping

    A slug of solar fluid at 309F can cause the pex or a connection to fail
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream