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High pressure pneumatic actuator
Key words: Michael Johnson, executive agency
Pneumatic actuator is an actuator that uses pneumatic pressure to drive the opening and closing or regulating valve. It is also called pneumatic actuator or pneumatic device, but it is generally called pneumatic head.
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Details Introduction
Pneumatic actuator is an actuator that uses pneumatic pressure to drive the opening and closing or regulating valve. It is also called pneumatic actuator or pneumatic device, but it is generally called pneumatic head. Pneumatic actuators are sometimes equipped with certain auxiliary devices. Commonly used are valve positioner and handwheel mechanism. The function of the valve positioner is to improve the performance of the actuator by using the feedback principle, so that the actuator can realize accurate positioning according to the control signal of the controller. The function of hand wheel mechanism is to directly operate the control valve to maintain the normal production when the control system is powered off, gas stops, the controller has no output or the actuator fails.
The type and structure of the regulating mechanism of the pneumatic actuator are roughly the same, mainly because the actuator is different. Therefore, the pneumatic actuator is divided into two parts: actuator and regulating valve. The pneumatic actuator consists of an actuator and a regulating valve (regulating mechanism). According to the size of the control signal, the corresponding thrust is generated to promote the action of the regulating valve. The regulating valve is the regulating part of the pneumatic actuator. Under the thrust of the actuator, the regulating valve produces a certain displacement or angle to directly regulate the fluid flow.
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