Method and tank for dispensing under gravity liquid substances into containers

摘要

Containers (3) are directed onto a carousel (5) supporting and rotatable as one about a vertical axis (6) with a tank (14) affording a fluid-tight enclosure and equipped with a plurality of filler valves (15) positionable each over the mouth (4) of a relative container (3); the tank (14) is filled with a liquid substance (2) until a given head (H) has been established, whereupon the enclosure is negatively or positively pressurized, according to the type of liquid substance (2) being handled, in such a way that the jet formed at the outlet of the filler valves (15) will be dispensed at a selected discharge pressure (pe) different to the pressure deriving solely from the head (H) of the liquid substance (2) in the tank (14). The tank (14) is depressurized when filled with foamable liquid substances (2), and pressurized when filled with viscous substances (2).