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I have a Gorton #1 as my main line vent now and I am wondering whether I'm getting enough venting and maybe add additional vents.
I only have one main line pipe which is 2 inches and it runs approx 60 feet through the whole entire basement ceiling. My return is 1 inch and maybe a little bit less than 60 feet. This is a 3-family house with about 12 or 13 radiators total.
Is a single Gorton #1 enough for this capacity? If not, how many Gorton #1 and/or Gorton #2 should I add to be cost effective? I do not want to go crazy and overdo it if the benefit won't outrun the cost.