The AVS Actuator is a vital part of the aircraft’s Alternate Ventilation System, functioning as a backup system to maintain cabin airflow when the primary air conditioning packs are inoperative or degraded.
Its primary role is to actuate the outflow valves and alternate flow paths that manage pressure and ventilation in emergency or abnormal operating conditions. Designed for electric actuation, the AVS Actuator integrates with the aircraft’s central control systems and fault monitoring units, enabling automatic activation when required.
It controls airflow from secondary sources, stabilizing internal cabin pressure and supporting breathable air circulation. The actuator uses position feedback mechanisms to confirm valve operation and is constructed with robust, aviation-grade materials for long life and durability.
The AVS Actuator exemplifies a focus on fault tolerance and system redundancy in critical aircraft systems. Its ability to quickly engage during ECS failures ensures continuous airflow for passenger comfort and safety, even under failure conditions. Its compact size allows for flexible installation in confined fuselage spaces.
SM Tech Co., Ltd. located in Asan, Chungcheongnam-do, Republic of Korea, is a specialized manufacturer of high-precision components for the aerospace, defense, and space industries. Since its establishment, the company has built strong expertise in the design, machining, and assembly of critical mechanical and structural parts for both civil and military aircraft, helicopters, and space launch vehicles.
We are a trusted supplier for key domestic and international aerospace programs, including fighter jets, helicopters, and commercial aircraft. Our main products include actuators, landing gear components, hydraulic control systems, and precision-machined parts and assemblies, all designed to meet stringent quality and performance standards.
SM Tech is certified to AS9100D and ISO 9001, ensuring a robust quality management system that covers every stage of production—from raw material inspection to final product testing. We operate advanced manufacturing facilities equipped with CNC lathes, machining centers (MCT), and 5-axis machining capabilities, enabling the production of complex and high-tolerance components.
With a track record of indirect exports to major global aerospace companies, including components installed on Boeing commercial aircraft, SM Tech continues to expand its presence in the global market. Our commitment to continuous technological innovation, process improvement, and customer satisfaction allows us to provide reliable, high-quality solutions for the most demanding aerospace applications.