What are the characteristics of AW pneumatic actuators? What is the working principle?

AW pneumatic actuator is a device that converts pneumatic signals into mechanical torque, used to control valves that rotate 90 degrees, such as ball valves, butterfly valves, plug valves, etc. It is widely used in industries such as petroleum, natural gas, power, chemical, metallurgy, etc. This article mainly introduces the characteristics and working principles of AW pneumatic actuators.
Characteristics of AW pneumatic actuator:
1. The output torque follows a U-shaped curve, which is particularly suitable for automation of ball valves and butterfly valves. The output torque of AW pneumatic actuator follows a U-shaped curve relationship with valve opening. When the valve opening is close to 0 ° and 90 °, the output torque is small, while when the valve opening is close to 45 °, the output torque is large. This characteristic matches the fluid characteristics of ball valves and butterfly valves, which can improve the control accuracy and efficiency of valves.
2. Double acting and single acting designs can be selected according to needs. The double acting AW pneumatic actuator can control the opening and closing of valves through compressed air, with a large output torque, suitable for valves that require frequent operation. Single acting AW pneumatic actuators open valves under the action of compressed air and close valves under the action of springs, suitable for valves that require emergency closure.
3. The inner wall of the cylinder and the piston rod are coated with hard chromium, which has a low friction coefficient and high wear resistance. This improves the service life and reliability of AW pneumatic actuators.
4. All piston components are lubricated with oil-free bearings and guide rings to reduce friction and extend service life. This makes AW pneumatic actuators more environmentally friendly and also reduces maintenance costs.
5. High torque output can be configured according to different gas source working pressures, suitable for the automation of heavy-duty high torque valves. The output torque of AW pneumatic actuators can be adjusted according to the air source pressure to meet the needs of different application scenarios.
AW series pneumatic actuator
AW pneumatic actuators are mainly divided into double acting and single acting types, and their working principles also have some differences.
Double acting working principle:
The AW double acting pneumatic actuator consists of two independent cylinders and pistons. When compressed air enters one of the cylinders, the piston rod will push the output shaft, thereby driving the valve to rotate. When compressed air enters another cylinder, the piston rod will move in the opposite direction and the valve will also rotate in the opposite direction.
Single acting working principle:
AW single acting pneumatic actuator has only one cylinder and piston. When compressed air enters the cylinder, the piston rod will push the output shaft, thereby driving the valve to rotate. When the compressed air is disconnected, the spring will push the piston rod back to its initial position, and the valve will automatically close or open.

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