Pneumatic flange ball valve is a pneumatic control valve combined with pneumatic actuator and straight-through flange ball valve. By assembling solenoid valve, limit switch, filter, positioner and other pneumatic accessories, the valve can be controlled at the remote end for quick switching and adjustment. Pneumatic flange ball valve adopts two-piece floating ball structure, full bore design to meet the requirements of pipeline clearing, with large flow capacity. The valve body as a whole adopts silicone sol technology casting, smooth surface without burr, easy processing. Pneumatic piston actuator can be divided into single-acting and double-acting two kinds. Double-acting pneumatic actuator in the use of the process of loss of air, the valve to maintain the position of the loss of air can be maintained to continue production. Single-acting in the loss of power or gas, the valve is in the original limit position (fully open or fully closed) to ensure that the production process is in a safe position.

　　Pneumatic actuator for the rack and pinion type double piston design, the role of the form is divided into double-acting (gas source failure to maintain the original position) and single-acting (gas source failure reset), the product fully in line with the international standards of ISO 5211, DIN 3337 and CD/VDE3845, MAMUR and other international standards, the maximum working pressure of up to 10bar, the standard stroke of 90 °, can be ± 5 ° angular adjustability, the actuator’s Cylinders and seals, according to the actual requirements of customers to choose anti-corrosion, high temperature, low temperature and other occasions to apply materials.

　　This valve is used in pipelines to cut off or connect the medium in the pipeline, suitable for two cut off or regulation of the occasion. Can be used for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media respectively. Widely used in papermaking, petroleum, chemical, metallurgy, electric power, water treatment, environmental protection, petroleum, light industry and other industries in the automation control.　Pneumatic flange ball valve has the advantages of compact structure, compact size, reliable operation, low flow resistance coefficient, good sealing, easy maintenance, easy installation, adaptability and so on.