This radiator is not balanced properly. It is not letting the cold condensate drain out of it. The steam or hot water hitting the cold water trapped inside is whats making all that racket. Once properly balanced, the noise will disappear.
change the steam trap and get a contractor to do everything. there could be pressure issues. high pressure can cause this. this is a steam system. no bleading is required. the pipes are always empty, the only thing in the radiator is steam. the problem is the steam condenses back to water and because the trap is bad the steam goes into the return pipe, mixes with slugs of water then when that steam cools off it violently contracts and the slugs of water slam into each other causing water hammer.
You don't "bleed" these. This is a Vapor system- ultra-low-pressure two-pipe steam, the Cadillac of heating in its day. The trap looks like a Dunham but I'm not 100% sure of that.
Steam systems should not bang. If they do, they're telling you something is wrong. I suspect this radiator has a bad trap.
@Steamhead1 he is absolutely right sounds like traps that failed open the steam sneaks up the returns and smashing the condensate around into the traps as it tries to leave the radiator. When you replace these make sure you replace them in the off season if possible or at least replace them all in one day. on large systems this is not always practical due to the size of the system and to the fact that building managers are often idiots. anyways if you don't replace them at once the steam will
This radiator is not balanced properly. It is not letting the cold condensate drain out of it. The steam or hot water hitting the cold water trapped inside is whats making all that racket. Once properly balanced, the noise will disappear.
itsmegp46 3 months ago
kill the new steam traps almost as fast as you can replace them
bassman34516 3 months ago
change the steam trap and get a contractor to do everything. there could be pressure issues. high pressure can cause this. this is a steam system. no bleading is required. the pipes are always empty, the only thing in the radiator is steam. the problem is the steam condenses back to water and because the trap is bad the steam goes into the return pipe, mixes with slugs of water then when that steam cools off it violently contracts and the slugs of water slam into each other causing water hammer.
sabbath7081 4 months ago
You don't "bleed" these. This is a Vapor system- ultra-low-pressure two-pipe steam, the Cadillac of heating in its day. The trap looks like a Dunham but I'm not 100% sure of that.
Steam systems should not bang. If they do, they're telling you something is wrong. I suspect this radiator has a bad trap.
Steamhead1 6 months ago
@Steamhead1 he is absolutely right sounds like traps that failed open the steam sneaks up the returns and smashing the condensate around into the traps as it tries to leave the radiator. When you replace these make sure you replace them in the off season if possible or at least replace them all in one day. on large systems this is not always practical due to the size of the system and to the fact that building managers are often idiots. anyways if you don't replace them at once the steam will
bassman34516 3 months ago
mine do the same thing... how do you bleed those old radiators!?
markadiculous 1 year ago