Pneumatic valves are valves that are driven by compressed air. 1. Main types of pneumatic valves
Pneumatic regulating ball valve
Pneumatic cut-off ball valve
Torque cylinder ball valve
Solenoid diaphragm valve
Pneumatic straight stroke diaphragm valve
Electric valve
Theoretical characteristics of pneumatic valves
2. Pneumatic regulating valve
Purpose and characteristics
The purpose is a right-angle rotary structure, which is used in conjunction with the valve positioner. The proportionally adjustable valve core is most suitable for various adjustment occasions. It has a large rated flow coefficient, a large adjustable ratio, a good sealing effect, zero sensitivity in adjustment performance, a small size, and can be installed vertically or horizontally. Suitable for controlling gas, steam, liquid and other media.
, characterized by a right-angle rotary structure, consisting of a valve body, a pneumatic actuator, a positioner and other accessories. It has an approximately equal percentage of inherent flow characteristics. It adopts a double-bearing structure, has small starting torque, and has excellent performance. The sensitivity and sensing speed are super strong shearing ability.
The pneumatic piston actuator uses compressed air as the power source, and drives the crank arm to rotate through the movement of the piston to automatically open and close the valve. Its components are adjusting bolts, actuator box, crank arm, cylinder block, cylinder shaft, piston, connecting rod, and universal shaft.
. Working principle of pneumatic regulating valve Pneumatic regulating valve is composed of actuator and regulating mechanism, such as/>Pneumatic regulating ball valve
. The actuator is the thrust component of the regulating valve. It generates corresponding thrust according to the control signal pressure and promotes the action of the regulating mechanism. The valve body is the regulating component of the pneumatic regulating valve. It is in direct contact with the regulating medium and regulates the flow of the fluid.
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