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Main vent replacement sizing
I have a residential steam system in my recently purchased home. I read "We got steam heat!" and it looks like one of the two main air vents (Hoffman 75) appears to have failed open. Date written on the side has it at about 14 years old, so not a huge surprise. I just wanted to make sure that's the right size vent before I go replacing it. I have two loops from my boiler:
- The short loop is 25', 1.75" pipe, currently has a Gorton #2. This feeds a 6 tube radiator with 18" plates x18.
- The long loop is 67', mostly 2.25" pipe dropping to 1.75" for last 18', has the failed Hoffman 75. This feeds one 6 tube radiator 18" x15 and a total of x35 36" 3 column plates.
It's a two story house the long loop serves all of the top floor plus a portion of the main floor. The upstairs has always been much hotter than the main floor, but I suspect this could be due to the failed vent. Thanks in advance.