The AIR TORQUE AL-79,051U-S8 A is a high-performance spring-return pneumatic actuator featuring a robust rack and pinion design. Engineered for the automation of quarter-turn valves such as ball and butterfly valves, it provides reliable and fail-safe operation. The actuator utilizes compressed air to perform the opening or closing stroke and high-tensile springs to return the valve to its safe position upon loss of air pressure. Its body is constructed from a hard-anodized aluminum alloy for excellent corrosion and wear resistance. This model is designed to comply with major international standards for easy valve mounting and accessory integration.