The pneumatic actuator of the GIQ-AB series pneumatic high vacuum butterfly valve is powered by compressed air and changes the direction of the air path through an electromagnetic directional valve, driving the mechanical movement of the piston rack and gear, and outputting torque with angular stroke to drive the butterfly valve for opening and closing motion, thereby achieving the purpose of connecting or cutting off the airflow in the vacuum pipeline. It is a new type of pneumatic vacuum butterfly valve controlled by pneumatic actuators, which is divided into double acting and single acting (spring reset) cylinders. Optional feedback signal device and electrical valve positioner.  
The applicable working medium is air and non corrosive gases.  

Main technical performance of GIQ-AB series pneumatic high vacuum butterfly valve