In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
air valves spitting water not fixed, and more..
I have a 12-section 3 column radiator in the living room. when I have my air valve all the way open and once the steam arrives, it behaves normally at the beginning. then as it progresses, I can start to hear the noise of running water in the radiator, then the water comes out from the air valve eventually, shoot pretty high.
I have another 9-section 3 column radiator in the bedroom. I put it in to replace a tiny slim one which couldn't heat up the room even to 55f when it was very cold outside. as soon as I put it on, it gave me the same problem as the larger one in the living room. the tiny slim one worked fine, never a drop of water.
I did some research online, and I tried to replace the air valves, slope the radiators down towards the supplying pipe. nothing helped. I tried different kind of valves - 2 vent-rite #1, 2 usav-884 and 1 gorton #6. all failed.
I observed the 5-section 2-column radiator in the 2nd bedroom. It worked flawlessly. the steam starts to kick in, the vent let the air out, once it gets hot, the vent closes with a click sound, once it gets colder, it opens and let more air out, then it close again (it sometimes repeats itself a few times even during one heating cycle). I don't hear that click sound with the other two large radiators. so I am guess the air valves i use on them never actually close. maybe they don't get hot enough or not sensitive enough?
Don't know what I did wrong! please help!
also - there is a piece of metal clip on the vent-rite valve falls off. I don't know which way in is correct. I tried both ways but neither made any difference. I cannot find them new in home depot. USAV-884 don't have that clip. also, what does the adjustable dial adjust? the sensitiveness of the valve? or the air flow. I think it is the air flow, but how air flow speed can control the temperature? does this have to do with the length of the heating cycle?
the guy who came to install the radiator insist to use 'pro-dope' pipe joint compound instead of the tape when he seals the pipes, does that make any difference? will that give me problems later? seems like everyone on the internet uses tape.
i live in a condo so I don't have the control of the boiler. I asked the super. he tells me the boiler is fine and no one else has complained. :(
Thank you guys!!