Patent ID: 7654414
Filing Date: 2010-02-02
Classification: B67D

Abstract:
1. A system for use in dispensing a dispense liquid comprising: a feed assembly for supplying a dispense liquid; a dispense pump having a suction inlet fluidly connected with the feed assembly and a dispense outlet for dispensing the dispense liquid to a dispense point; a feed line fluidly connecting the feed assembly and the dispense pump; a filter disposed between the feed assembly and the dispense pump in the feed line; a valve disposed downstream from the feed assembly; and a controller arranged to detect an operating condition of the dispense pump and control the opening and closing of the valve, wherein the controller is coupled to the valve to open the valve in response to a suctioning operation of the dispense pump at the suction inlet and drive the dispense liquid to the suction inlet to maintain the pressure at the suction inlet at or above a predetermined value.