One of my radiators was cold on top and warm on bottom, So I decided to bleed the radiator. Air was releasing and when water started to flow, I turned the valve the wrong way. About 1/2 gal of water bled from the radiator.
That is what you wanted. It is the water that supplies the heat to your room. The bleeding of the air now allows the water to flow through the radiator. It is a good idea to bleed the radiators on a regular basis.
i take it that you are speaking of a steam radiator, and boiler. the water in radiator is condensation of steam allowed to cool down inside radiator, if too much water collects it prevents normal flow of steam (heat) and you have no heat transfer (NO HEAT), do not adjust boiler pressure, adjustments are to be done only by qualified persons, a wrong setting can be very dangerous. however you can drain water from radiator as needed. open valve slowly allow to drain until you get steam, then close drain valve BE CAREFULL, STEAM WILL BURN YOU.
