Purging assembly for a filter housing

A purging assembly for a fuel filter housing, the purging assembly comprising a shaft having towards an upper end an upper sealing element located around the perimeter of the shaft and having towards a lower end a lower sealing element located around the perimeter of the shaft, wherein the lower sealing element is configured to sealingly engage with an orifice in the filter housing which is otherwise open to drain, wherein a sensor is integrated with the shaft, wherein an electrical connector is provided on a head at an upper end of the shaft, wherein the electrical connector is configured to electrically connect the sensor to an electronic control unit, wherein a weak point is provided between the head and the shaft, said weak point sufficiently weak to allow the head to separate from the shaft before the filter housing is damaged in the event of the head being struck.