Pneumatic gate valve
Pneumatic gate valve, with the help of compressed air driven valve, when the gate valve closes, the sealing surface can only rely on the medium pressure to seal, that is, relying on the medium pressure to press the sealing surface of the gate to the other side of the valve seat to ensure the sealing surface sealing, which is self-sealing. Most gate valves are forced to seal, that is, when the valve closes, the gate must be forced to the seat by external force to ensure the sealing surface.
Application Characteristics of Pneumatic Gate Valve
1. Use is a right-angled rotary structure, which matches with valve positioner to achieve proportional adjustment. V-shaped valve core is suitable for various adjustment occasions, with large rated flow coefficient, large adjustable ratio, good sealing effect, zero-sensitivity regulation performance, small volume, and can be installed vertically and horizontally. It is suitable for controlling gas, steam, liquid and other media.
2. Characteristic: It is a right-angled rotary structure, consisting of V-type valve body, pneumatic actuator, positioner and other accessories; has an approximate inherent flow characteristic of equal ratio; adopts double bearing structure, with small starting torque, good sensitivity and induction speed; and shear capacity.
3. The pneumatic piston actuator uses compressed air as power source and drives the crank arm to rotate 90 degrees through piston movement, so as to make the valve open and close automatically. Its components are: adjusting bolt, actuator box, crank arm, cylinder block, cylinder shaft, piston, connecting rod, universal shaft.
4. The working principle of pneumatic control valve: pneumatic control valve is composed of actuator and regulator. The actuator is the thrust component of the control valve, which generates the corresponding thrust according to the magnitude of the control signal pressure and promotes the action of the control mechanism. The valve body is the regulating part of the pneumatic control valve, which directly contacts the regulating medium to regulate the flow of the fluid.
Application Range of Pneumatic Gate Valve
1. Oil and gas pipelines. Flat gate valves with diversion holes also facilitate pipeline cleaning.
2. Oil product pipeline and storage equipment.
3. Wellhead device for oil and gas production, that is, valve for oil production tree.
4. Pipeline with suspended particles.
5. Urban gas pipeline.
6. Water works.
