US Patent 10533307 Fluid governing system

A fluid governing system including a fluid inlet and fluid inlet port coupleable to an upstream pipe segment; a fluid outlet and a fluid outlet port coupleable to a downstream pipe segment; a flow unit; a metering inlet path in flow communication with the fluid inlet; a metering outlet path in flow communication with the fluid outlet, the metering inlet path is in flow communication with the metering outlet path through the flow unit which is articulable between the metering inlet path and the metering outlet path; a pressure responsive sealing diaphragm for selective sealing a metering inlet port; an inlet chamber disposed at a face of the sealing diaphragm, the inlet chamber in flow communication with the fluid inlet; a control chamber disposed at an opposite face of the sealing diaphragm; and a control fluid duct extending between the inlet chamber and the control chamber.