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Air vent sizing

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Steamhead (in transit)
Steamhead (in transit) Member Posts: 6,688
in THE MAIN WALL
two Gorton #1 or Hoffman #75 vents on each main.

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  • David Hohengasser
    David Hohengasser Member Posts: 52
    Steam main vent sizing

    Currently have a 2" main x 40 ft with one Hofmann #77 and one Hofmann #75. Is this adequate? Other main is 2" x 36 ft with one Hofmann #75 and one Hofmann #35. Is this adequate? If not, please recommend proper Gorton sizes. Thanks
  • David Hohengasser
    David Hohengasser Member Posts: 52
    Not Hofmann

    These are Vent-Rite, not Hofmann vents. My error.
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