Patent ID: 7011101

Claim:
A method of controlling a flowing liquid, wherein the liquid is caused to flow through a valve system between an inlet and an outlet thereof, the valve system comprising two parallel flow ducts, and a fluidic vortex valve comprising a generally cylindrical chamber with at least one pair of opposed tangential inlets and an axial outlet, the flow ducts communicating exclusively between the inlet and two opposed tangential inlets to the fluidic vortex valve, the axial outlet of the fluidic vortex valve communicating with the outlet of the valve system, and with an adjustable valve to adjust the flow through one of the parallel flow ducts, the adjustable valve enabling the flow therethrough to be closed off completely, and wherein the adjustable valve is adjusted in response to a measured value of the pressure of the liquid, for controlling the flowing liquid and maintaining the outlet pressure from the valve system at a desired value.