The ATB Series integral throttle body electric actuators are designed to control the air or an air/fuel mixture to a gaseous-fueled engine. They are typically used to control an engine by working in tandem with a conventional fuel mixer. The design baseline for the ATB Series incorporates fast response and proven reliability to allow for efficient and more precise control. The ATB Series actuator directly drives the throttle plate. Internal return springs provide for a normally closed valve for fail-safe operation. This insures that the throttle plate returns to the minimum fuel position when the actuator becomes de-energized. ATB Series actuators are also designed to accept system battery voltages of either 12 or 24 VDC and are available with a throttle position feedback sensor.