Vacuum excavator consisting of a carrier vehicle (1) on which are mounted a machinery compartment (2) equipped with pumping members as well as a tank (3) subdivided into a filter compartment (5) and a storage compartment (6) equipped with an articulated suction arm (9) connected to a suction…

Suction excavating machine consisting of a carrier vehicle (5) equipped with a motor (15) on which are mounted a machine compartment equipped with waste and debris pumping organs as well as a tank capable of tilting transversely around a horizontal tilting axis between an upright position or…

The device has a pumping circuit (7) that it is totally sealed except at the level of an external opening of its evacuation pipe (15). The pumping circuit is equipped with an over-pressure valve (25) that is mounted directly downstream of a liquid-ring tank (21), where the gas passing through the…