Radiator keys to bleed. High quality radiator key UK specification, made of brass with a square hole. If your radiator does not have the same temperature all over the surface, you most likely have air in the radiator. The radiator should be completely filled with water. If there is air in it, heating is ineffective and can damage the pump that circulates the water in the central heating system. The problem is solved by venting the radiator. The key is designed to vent the radiators by unscrewing the plug of the radiator valves and forcing the air out. Radiator bleeder key fits all UK radiator valves. Radiator bleed key pack including 2 radiator keys to bleed uk radiators radiator bleed key uk radiator bleeders.
