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Terrorized by a bad bleeder (baseboard radiation)
So with the new boiler installed on Monday I helped the guys run the house and bleed the radiators. Today I found a cold unused bedroom that needed a little more bleeding so I got my trusty screwdriver, the bleeders have screw heads, not a key. Successfully bled the air out and turning the screw would not stop the flow. I was able to turn the screw tight enough to stop the flow. I don't dare open it again and don't need to. I attached a warning note to the wall inside the radiation.
So in an emergency is there a way or trick to stop the water flow? It's a first floor bedroom so the idea of draining the system "a little" is out.