A system (1) for controlling the level of liquid in a sump comprises a sump (2) and a conduit (5) connected to the sump at a first level (23). The conduit (5) defines a flow path for liquid flowing from the sump (2) and extends to a second level (24), which is at a higher level than the first level (23). The conduit (5) then extends from the second level (24) to a third level (25) which is at a lower level that the first level (23). Preferably as fluid flows down the conduit (5) from the second level (24) to the third level (25) it may be aerated. The device is suitable for use with an onboard system for scrubbing marine exhaust gases.
展开▼
