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Top floor apartment steam risers, help pls!
I'm on the top floor of a 7 story building. Single pipe steam heat system. The risers all have straight Gordon No C. on the top but it hisses Incredibly load... as a temporary fix I cut an old tshirt into little ribbons and tightly wrap it around the hole and it shut them up while still providing heat. However the pipes bang hard for like 30 seconds each cycle start.. then its pretty quite until steam gets to very top and a loud annoying CLICK shuts the vents. This repeats every cycle.
From reading Gortons website No C's look to be designed for Radiators not Risers and I probably need more venting. I've asked my super about the boiler pressure already, he tells me it's set to the absolute lowest setting but the boiler is way too big for the building. He also said everyone below me closed up there radiator so i'm getting all the release.
Gordon No 2 look most appropriate however the problem is they would not fit since 1/2. Do you think I would be okay installing the straight Varivalves? They seem to let out a lot of steam and are 1/8. I heard some folks suggest they might have leaking issues, but is that more for the radiators? I have 5 risers total and only 2 radiators (both of which I keep off) they also have No C's angled and are loud when on.
Curious to hear your thoughts, THANK YOU! Andy