Controlling a wellbore fluid flow

A valve assembly comprising:

• a tubular having an outer surface and an inner surface, the inner surface defining a void extending through the tubular along a longitudinal axis;
• a plurality of flow paths fluidly coupled to the void extending from the inner surface to the outer surface;
• a flow tube slideably coupled to the outer surface, the flow tube movable between a first position preventing a flow of fluid through the plurality of flow paths and a second position allowing the flow of fluid through the plurality of flow paths, the flow tube comprising:
• a first end and a second end opposite the first end;
• a body extending from the inner surface of the flow tube, the body defining a shoulder;
• and
• a support shroud protruding from the second end;
• and
• an actuator sub-assembly operably coupled to the flow tube, the actuator sub-assembly configured to actuate the flow tube from the first position to the second position responsive to a differential pressure greater than or equal to a threshold differential pressure, the actuator sub-assembly comprising:
• a pressure cartridge;
• a burst disc positioned between the pressure cartridge and the void, the burst disc configured to rupture responsive to the differential pressure greater than or equal to the threshold differential pressure;
• a retention shear ring coupled to the inner surface of the flow tube, the retention shear ring held in place by a pressure of the pressure cartridge;
• a retraction power spring coupled to the retention shear ring and the shoulder of the body of the flow tube, the retraction power spring held in an energized position by the retention shear ring;
• and
• a pressure chamber defined by the outer surface of the tubular and the inner surface of the flow tube, the pressure chamber configured to hold the pressure cartridge.