What is a pneumatic valve actuator? How does it work with pneumatic valve positioner?

Pneumatic actuators are also called pneumatic moving heads and pneumatic actuators. Pneumatic actuators can be divided into single-acting and double-acting: the opening and closing actions of actuators are driven by air sources, which are called double-acting and single-acting actuators. Pneumatic valve positioner is one of the important accessories and fittings of pneumatic control valve. Play the role of valve positioning. Pneumatic valve positioner and valve pneumatic actuator together form an automatic control unit, which is connected with various regulating valves. After debugging and installation, they are combined into a pneumatic control valve.

Using DCS system or PLC control system to remotely give 4-20mA or 0- 10V signal, commonly known as pneumatic head, so as to adjust the valve work. The mechanism that uses compressed air to open and close the valve is called pneumatic actuator: double-acting and single-acting. According to stroke control, it can be divided into straight stroke and angular stroke. The positioner can also be divided into straight stroke and angular stroke, and the pneumatic actuator can be divided into two types according to the action form. Cylinder, commonly known as pneumatic actuators.