Reply To: Help! Hot water baseboard radiators

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Avatar photoSylvanLMP

    Harold point of information.

    . ” 3/4-inch tube, actually about 7/8-inch in outside diameter depending upon the schedule or wall thickness, could pass comfortably through a 1-1/4-inch hole”

    The “Schedule” of type K, L or M tubing all have the same outer diameter BUT the internal area varies as M has the thinnest wall thickness then type L then K

    Now for something even more interesting re copper heating applications

    A lot of tubing failures can be directly attributed to poor system designs like excessive velocity with too high a temperature.

    2-3 FPS @180 degrees Max

    A lot of helpers not knowing why these systems fail constantly blame it on thin wall tubing and these apprentices being silly in the mind install a heavier wall tubing thus compounding the problem even more with creating even more restrictions go figure.

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