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How to choose the actuator for pneumatic ball valve

Pneumatic actuator is an important actuator in the pneumatic ball valve. This actuator controls the normal operation of the ball valve. Therefore, we must be cautious when selecting the pneumatic ball valve actuator. For a familiar friend, the choice is good. Then how do some of my friends who do not understand pneumatic ball valves refit? How to choose a good pneumatic actuator? Then let's share with you the relevant knowledge and correct choice of pneumatic actuator. First of all, we have to divide the types of pneumatic actuators. Pneumatic actuators are divided into electric and pneumatic. That is, the power energy used is not the same. However, different power sources make the relevant parameters of pneumatic actuators different. With the use of pneumatic actuators produced by various manufacturers in different ways of use and usage, it is easy to form a variety of pneumatic actuators. Therefore, according to the scientific knowledge to choose what should be used in the end of the pneumatic ball valve actuator.

Next, we will introduce the working principle of pneumatic ball valve actuators and some other related knowledge. Pneumatic actuators are divided into single acting (spring return) and double action. The compressed air pushes the screw to drive the valve stem to rotate. The actuator is selected according to the size of the air source (instrument air). The torque required to turn the valve is too small to move and the valve life is too long. It is generally OK to leave a 30% margin for torque. There are standards for installing platforms, and you can't go wrong with just looking for the right valve.

The actuator and adjustment mechanism of the pneumatic actuator are a unified whole, and its actuators are film-type, piston-type and rack-and-pinion type. The piston stroke is long and is suitable for applications where there is a need for high thrust; while the film-type stroke is small and can only directly actuate the valve stem. Because the rack-and-pinion pneumatic actuator has the advantages of simple structure, large output thrust, stable and reliable operation, and safety and explosion-proof, it has been widely used in power plants, chemicals, oil refining and other high-security production processes.

For the above-mentioned, we sum up how to scientifically select the pneumatic ball valve actuators that are suitable for their own needs. First of all, it is necessary to clearly understand the relevant components of the pneumatic actuator and the environment used. Then according to their financial ability to decide which one to buy. Finally, we must have some experience and conclusions.

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