At present, a pneumatic actuator is the most critical tool in pneumatic valves, and as a pneumatic actuator, in fact, it is shown in the role of the valve is to make the valve device  more convenient. And because of the pneumatic actuator access makes the valve drive the valve parts of the rapid linkage in the pipeline , with a certain effect of automation, and because the actuator itself is energy-driven, so the drive of valve opening and closing parts is also of a certain value. This valve is used due to the small fluid resistance to the fluid pipe to play the role of opening and closing.

  And as one of the opening and closing device, the valve-mounted pneumatic actuator with the use of compressed gas, pushing the piston to the valve inside and the valve stem connected to play a role in driving the ball valve body movement, Which played a role in regulating the fluid pipeline. And as one of the opening and closing pieces, the body around the axis of the ball for the rotation of the movement of the media for a certain effect. Ball valve is characterized by wear resistance, good sealing performance , and because the resistance is small, so the internal valve body by wear and tear is small, the service life is relatively long, so that the characteristics of this pneumatic valve in the use of the pipeline more " Handy ".

According to the relevant data survey shows that China's pneumatic valve manufacturers are gradually entering the European and American markets, the relevant economists believe that the impact will cause European and American markets turmoil. only a few large-scale pneumatic valve  manufacturers play the leading role in the world , and accounted for more than 50 percent of the global valve revenue.

See the market cake so huge, China's pneumatic valve manufacturers can't wait to take action. With the development of industry,The complexity of the automation  enterprise has gradually stabilized, the general pneumatic valve as long as the integrated network communication module to help its real-time monitor control, feedback and monitoring performance comparable to and foreign products.

China's pneumatic valve compared to foreign valves is basically use of traditional standards for production, the price is relatively low . Relative to the cheap and good China's pneumatic valves, foreign customers prefer to choose China's pneumatic valve products. Experts predict that in the next five years, China's pneumatic valve sales volume can break through the current 8 times.

control function can be operated only by outputting the relevant control information.

   The advantage of this structure is to facilitate the overall installation of the system to reduce wiring and installation costs, easy to diagnose and troubleshoot. But the traditional integration of structural products also have a lot of imperfections, so the resulting smart electric actuator.

    2. Adjustable (closed-loop control)

   Adjustable electric actuator not only has a switch-type integrated structure of the function, but also on the valve for precise control, adjust the media flow.

   A) Control signal type (current, voltage)

   Adjustable electric actuator control signal generally have a current signal (4 ~ 20mA, 0 ~ 10mA) or voltage signal (0 ~ 5V, 1 ~ 5V), the selection of the need to clear its control signal type and parameters.

   B) working form (open type, electric type)

   Adjustable electric actuator working mode is generally open (to 4 ~ 20mA control, for example, open-type refers to the 4mA signal corresponds to the valve off, 20mA corresponds to the valve open), the other for the electrical (4-20mA control, for example, electric open refers to the 4mA signal corresponds to the valve open, 20mA corresponds to the valve off). Wearable electrode

   C) loss of signal protection

   Loss of signal protection is caused by line failure caused by the control signal is lost, the electric actuator will control the valve opening and closing to set the protection value, the common protection value is fully open, fully closed, to maintain the original three cases.