Radiators are devices attached to the wall which collect steam from the central heating system. Steam is transferred from the central heating unit through a series of pipes to the radiator. The unit then radiates the heat that builds up inside the unit. A radiator may need to be removed when upgrading to a more efficient heating system, or when you need to repaint a room and need to get behind the radiator unit.
Place old rags beneath the radiator to catch any water that may leak when pulling it out.
Turn the temperature control on the opposite bottom end of the radiator to the lowest position.
Move the bucket underneath the connection at the right of the radiator that goes into the unit. Hold the entire lock shield valve with a pair of pliers to give yourself some leverage and turn the nut that holds the lock shield valve on the unit until it is loose.