Patent ID: 8678025

Claim:
A method of controlling a pressure in a fluid delivery system, comprising the steps of: (a) using a variable-pressure regulating means (VPRM) with a flow-controlled selecting means (FCSM) to deliver the fluid, (b) regulating said pressure by adjusting two input selectable pressure set-points at a valve and at a pressure regulator valve simultaneously, wherein selecting at which of said set-points said pressure is regulated is based upon the flow rate of fluid in said fluid delivery system, such that said pressure is selected to be lower when said flow rate is lower, and said pressure is selected to be higher when said flow rate is higher, wherein said selecting at which of said set-points said pressure is regulated is accomplished automatically, and (c) allowing sufficient fluid to escape from within said fluid delivery system when said pressure is selected to be lower, such that said pressure can transition from a higher to a lower pressure; wherein said flow rate is an inherent signal that indicates the containment of fluid within, or the release of fluid from, said fluid delivery system, and wherein said lower pressure is greater than ambient pressure.