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3/8" Pex for panel radiators

radmix
radmix Member Posts: 194
How many btu's can I expect with running 3/8" pex to panel radiators I've always went by the formula of
GPM x 20 x 500 I have the GPM for all pipe sizes but 3/8"

Comments

  • Rich_49
    Rich_49 Member Posts: 2,693
    What temp water , how much flow , length to radiator ?
    You didn't get what you didn't pay for and it will never be what you thought it would .
    Langans Plumbing & Heating LLC
    732-751-1560
    Serving most of New Jersey, Eastern Pa .
    Consultation, Design & Installation anywhere
    Rich McGrath 732-581-3833
  • radmix
    radmix Member Posts: 194
    Water temp. 140* flow 2 GPM 80' Longest run
  • Rich_49
    Rich_49 Member Posts: 2,693
    Uponor CDAM states that 100' of 3/8" tubing flowing 2 gpm of 140*F water will have 23.55' head (54.39 psi) . 100% water .
    That should make your decision easier .
    You didn't get what you didn't pay for and it will never be what you thought it would .
    Langans Plumbing & Heating LLC
    732-751-1560
    Serving most of New Jersey, Eastern Pa .
    Consultation, Design & Installation anywhere
    Rich McGrath 732-581-3833
    DavesHouse
  • SWEI
    SWEI Member Posts: 7,356
    Don't forget ΔT.

    Panel rads are commonly run with a 30-40°F drop across the pond, and it works just as well over here.
    Rich_49Gordy