Patent ID: 7753066

Claim:
A method for controlling flow rate of a high or low pressure gas through a valve comprising the steps of: a. providing a valve having an input port, an output port, a valve ram controlling the flow rate of the high or low pressure gas through the valve, a gas admission chamber in communication with the input port, an output chamber in communication with the output port, and a Venturi between the gas admission and output chambers, the gas admission chamber having a series of flow aligners which force the passage of gas or air in the direction of the Venturi; b. reading a flow rate set point; c. converting the flow rate set point into a set point pressure differential between the valve input port and output port; d. reading an actual pressure differential; e. calculating an error between the actual pressure differential and the set point pressure differential; f. adjusting the position of the valve ram; g. analyzing an error in valve position in relation to a tolerance; wherein if the error in valve position is less than the tolerance returning to the step of reading the actual pressure differential and if the error in valve position is greater than the tolerance returning to the step of adjusting the position of the valve ram.