An actuator assembly includes a unitary actuator housing, a plurality of pilot valves, and a plurality of actuating members. The actuator housing defines a plurality of actuator cavities and a plurality of internal passages each extending from a corresponding actuation ports on the actuator housing to a corresponding one of the actuator cavities, and an internal pressurization passage extending from a single supply port on the actuator housing to a plurality of branch ports each adjacent a corresponding one of the actuation ports. The pilot valves each have an inlet port coupled to a corresponding branch port and an outlet port coupled to a corresponding actuation port. The actuating members are disposed in the corresponding actuator cavities and are movable within the actuator cavities in response to fluid pressurization of the single supply port and movement of the corresponding pilot valve to an open position.