Plumber's Tips: Unblock Central Heating Pipe with a Foot PumpHow To Unblock A Radiator. Plumbing and heating advice from time served plumberAre you dealing with a stubborn blockage in your central heating pipe? Don't fret! In this informative video, we share valuable plumber's tips on how to effectively unblock a central heating pipe using a foot pump. Watch as we demonstrate the step-by-step process of removing the radiator valve, connecting a foot pump to the pipe, and pumping up the pressure