Pneumatic valve can driven by compressed air. It is imperfect in the current market economic environment that pneumatic valve manufacturers only specify the specifications, types and working pressure to meet the procurement requirements when purchasing pneumatic valves. For the sake of product competition, each manufacturer carries out different innovations under the concept of unified design of pneumatic valves, forming their own enterprise standards and product personality. Therefore, when purchasing pneumatic valves, it is necessary to put forward more detailed technical requirements, coordinate with manufacturers to reach a consensus, as an annex to the pneumatic valve procurement contract.
Pneumatic valve is an important device in the automation of industrial pipeline system. It installs pneumatic actuator on the basis of ordinary valve and drives the actuator to work by air pressure. Pneumatic valve opening and closing operation should be square tenon, and standardized size, and face to the ground, so that people can operate directly from the ground. Valves with roulette wheels are not suitable for underground pipelines.
It is a right-angled rotating structure, with valve positioner matching use, which can achieve proportional adjustment. V-type valve core is most suitable for various regulatory occasions, with rated flow coefficient, adjustable ratio. Sealing effect is good, and adjustable performance is sensitive. Small volume can be installed vertically and horizontally. It is suitable for controlling gas, steam, liquid and other media.
It is a right-angled rotating structure composed of V-type valve body, pneumatic actuator, positioner and other accessories, which has an approximate inherent flow characteristics of equal to 100. It uses double bearing structure, and starting torque is small, which has excellent sensitivity and induction speed, super shearing capacity.
The pneumatic piston actuator uses compressed air as the power source and drives the crank arm to rotate 90 degrees through the piston movement 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.
The working principle of pneumatic control valve is that pneumatic control valve is composed of actuator and regulating mechanism. The actuator is the thrust component of the control valve. It generates the corresponding thrust according to the magnitude of the control signal pressure, and pushes the regulating mechanism to move. The valve body is the regulating part of the pneumatic control valve. It contacts the regulating medium directly to regulate the flow of the fluid.