Patent ID: 7169616

Claim:
A method of purging trapped gas from a system fluid contained in one or more interior areas of an actuation valve that selectively fluidly inter-couples a fluid communication line to a pressurized system fluid reservoir providing the system fluid, said fluid communication line defining a communication passageway extending from a dispensing orifice thereof to the actuation valve, said method comprising: pressurizing the system fluid in the system fluid reservoir with a pressurized gas; priming the actuation valve and the fluid communication line by initially flowing the system fluid, via said pressurized gas, through the actuation valve and into said communication passageway for dispensing through the dispensing orifice such that said actuation valve and said communication passageway are converted from a generally dry state to a hydraulic state; and rapidly actuating the actuation valve between a closed condition, preventing flow of said system fluid through said actuation valve from said system fluid reservoir to the dispensing orifice, and an opened condition, enabling fluid flow and dispensing of the system fluid through said dispensing orifice, at at least two different discrete actuation frequencies each for a respective predetermined period of time in a manner purging and expelling trapped gases contained in the areas of said actuation valve.