Liquid jet ventilators using a liquid as motive medium suck off large gas volume flows. This is possible because only slight pressure differences must be overcome. Simultaneously dust, deposits and vapours can be washed out of the suction flow.
Liquid jet vacuum ejectors suck off gases and/or vapours from a process. The lowest possible suction pressure in the reactor is only limited by the vapour pressure of the motive liquid. It is possible to compress to atmospheric or even higher pressure.