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Main vent size

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Steamhead (in transit)
Steamhead (in transit) Member Posts: 6,688
in THE MAIN WALL
vent each main with two Hoffman #75 or Gorton #1 vents. Watch how well it works.

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  • David Hohengasser
    David Hohengasser Member Posts: 52
    Main vent size

    I have 42 feet of 2" main and another with 32 feet of 2" main. Each has one Hoffman #75 vent. Is this adequate for the cpacity of the main?
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