The GUQ series pneumatic vacuum (pressure) ball valve is suitable for connecting or cutting off the medium flow in pipelines in vacuum systems. This valve is powered by compressed air and changes the direction of the air path by controlling pneumatic components, driving the mechanical transmission of piston racks and gears, and outputting torque through angular stroke to drive the ball valve to open and close. The valve is a straight through type, sealed by a spherical surface, so it can be used in both vacuum and low-pressure conditions, and can be installed at any position. Cylinders are divided into double acting and single acting (spring reset), and can be equipped with feedback signal devices and electrical valve positioners.  
The applicable working medium is acidic or alkaline gas or liquid.  

Main technical performance of GUQ series pneumatic vacuum ball valve

(Figure 1) Quick release flange (KF) connection and external dimensions (GB4982)

(Figure 2) Flexible flange (KF) connection and external dimensions (GB/T6070)