A. The purpose and characteristics of the pneumatic control valve is a right angle rotary structure, which can be used together with the valve positioner to achieve proportional regulation; V-shaped valve core is most suitable for various adjustment occasions, with large rated flow coefficient, large adjustable ratio, good sealing effect, sensitive adjustment performance, small volume, and can be installed vertically and horizontally. It is applicable to control medium such as gas, steam and liquid.

B. Features: It is a right angle rotary structure, composed of V-shaped valve body, pneumatic actuator, positioner and other accessories; There is an inherent flow characteristic of approximately equal 100%; Double bearing structure, small starting torque, good sensitivity and induction speed; Super shearing capacity.

C. The pneumatic piston actuator uses compressed air as the power source to drive the crank arm to rotate 90 degrees through the movement of the piston, so that the valve can be opened and closed automatically. Its components are: adjusting bolt, actuator box, crank arm, cylinder block, cylinder shaft, piston, connecting rod, universal shaft.

D. Working principle of pneumatic control valve: the pneumatic control valve is composed of an actuator and a regulator. The actuator is the thrust component of the regulating valve, which generates the corresponding thrust according to the control signal pressure to push the regulating mechanism to act. The valve body is the regulating part of the pneumatic control valve, which directly contacts with the regulating medium to regulate the flow of the fluid.