Device for connecting cistern to atmosphere and a cistern equipped with such device

摘要

The device has a proximal end (104) connected with an interior of a tank and a distal end (106) to free air. A stopper (5) in the distal end moves between a closing and an opening position with a help of a pressure jack (23). The stopper is mounted on a moving lever (1) of which an end is driven by the jack (23). The jack causes the stopper to open in case of suppression inside the device. An independent claim is also included for a tank of a lorry.