The actuator, also known as the actuator, is a kind of regular mechanical and electrical equipment (device) in the field of automatic control. It is the executing equipment in the three major components of the automatic instrument (detection equipment, adjustment equipment and execution equipment).Mainly is to carry on automatic operation to some equipment and device, control its switch and adjust, replace manual work.

According to the type of power can be divided into pneumatic, hydraulic, electric, electro-hydraulic and so on.

According to the form of motion can be divided into straight stroke, angular stroke, return transformation (multi-rotation) and so on.

As the power of electricity as a few other media incomparable advantages, so electric in recent years the development of a wide range of applications.

Electric model can be divided into: combined structure and mechatronics structure according to different standards;Electrical control type, electronic control type and intelligent control type (with HART, FF protocol);Digital and analog;Manual contact debugging type and infrared remote control debugging type.It develops rapidly with the requirement of control performance and the development of automatic control technology.

The main applications of executive agencies are in the following three areas:
1. Power plants
(1)Thermal power industry application

Blower inlet baffle, a ventilation air door panel, air preheating air door panel, flue gas recirculation, the bypass damper baffle, secondary inlet air damper baffle, the main bellows damper baffle, burner adjustment rod, burner swing drive, hydraulic push rod drives, impeller speed, flue gas regulating valve, steam valve, ball valve and butterfly valve control, sliding door, gate.

(2) Other power industry valve actuators application

Ball valve dust control Control of water jet turbaner speed control control of large hydraulic valve gas control valve burner ignition start steam control valve condensate recirculation deoxidizer boiler feed water, overheat controller, reheating thermostat, and other related valves.

2 .Process control

Used in chemical, petrochemical, mold, food, medicine, packaging and other industries the production process control, in accordance with the established logic instructions or computer program, cutting tools, pipe, the valve flap, chute, platform to _, start-stop, opening and closing, rotary positioning, using the system to detect the temperature, pressure, flow rate, size, radiation, brightness, chroma, roughness, density, such as real-time parameters on the system into the adjustment, so as to realize the intermittent, continuous and circulation processing and process control.

 3 .Industrial automation

It is widely used in aviation, aerospace, machinery, metallurgy, mining, transportation, building materials and other aspects to regulate and control the moving points (moving parts) of various kinds of automatic equipment and systems in various forms.
(1)Application in the production of sulfur ore
(2)Application of potassium carbonate pipe valve actuators
(3) Water treatment valve actuator should week
(4)The application of valve actuators in limestone/cement plants
(5) the application of actuators in grain processing plants
(6)Steel damper plate and valve actuator application
(7)Application of damper baffle and valve actuators in aluminum plant
(8)The application of the process control baffle
(9)Applications in the petroleum industry
(10)Application in natural gas production and transportation industry