Flow control method, system and apparatus

A method of providing, the method comprising:

• (a) providing a fuel inlet operable to receive a flow;
• (b) providing a fuel shut-off valve, the fuel shut-off valve is operable to allow the flow in a first configuration and prevent the flow in a second configuration;
• (c) providing a pressure regulator fluidly connected to receive the flow from the fuel inlet, the pressure regulator fluidly connected upstream from the fuel shut-off valve;
• (d) providing a flow control valve fluidly connected to receive the flow from the fuel shut-off valve, the flow control valve comprising a position sensor operable to sense a position of the flow control valve;
• (e) providing a fuel outlet fluidly connected to receive the flow from the flow control valve and the injector, wherein the pressure regulator is operable to maintain a pressure of the flow to the flow control valve and the injector at a predetermined pressure, and wherein at least one of the flow control valve and the injector are operable to incrementally allow the flow to pass to the fuel outlet;
• (f) providing a second pressure regulator fluidly connected to receive the flow from the fuel inlet, the second pressure regulator fluidly connected in parallel to the pressure regulator;
• (g) providing a second fuel shut-off valve fluidly connected downstream from the second pressure regulator, the second fuel shut-off valve connected in parallel to the fuel shut-off valve, the electrically operated pressure regulator, and the proportional flow control valve, the second fuel shut-off valve operable to allow a flow to pass in a first arrangement and to prevent the flow from passing in a second arrangement;
• and
• (h) providing an injector fluidly connected downstream from the second fuel shut-off valve and the pressure regulator, the injector connected in parallel to the electrically operated pressure regulator, the fuel shut-off valve, and the proportional control valve, the injector fluidly connected upstream from the fuel outlet, the injector connected in parallel to the proportional flow control valve.