In recent years, the variety of actuators has become increasingly diverse. Electric actuators are one type of actuator, along with pneumatic actuators and hydraulic actuators—all of which fall under the category of actuators. Meanwhile, louver valves are a type of valve, as are butterfly valves. Electric actuators can be further divided into regulating type and on/off type. The regulating type can control the valve opening through a 4–20 mA signal, while the on/off type controls the valve directly. An electric regulating louver valve uses an electric actuator to adjust the louvers, and its opening can be controlled. 

Electric adjustable louvered rectangular butterfly valves are mainly used in industries such as power plants, metallurgy, mining, building materials, and chemicals to control the flow of air, flue gas, wind, and dust-containing gas in process pipelines.

Main technical parameters: 

1. Medium temperature: -30°C to ≤600°C
2. Control mode: 4–20 mA; positioning; two-state
3. Power supply: 220V AC 50Hz; 380V AC 50Hz
4. Medium: Dust-containing gas, flue gas, air, etc.
5. Leakage: ≤1.5%

Advantages: 

1. Can be paired with various rotary electric actuators to form different control methods for regulating or closing the valve. 

2. Unique valve body structure, with more or fewer blades, low noise, and light weight. 

3. Low driving torque, high flow capacity, and easy control and maintenance. 

DCL series electric actuators are suitable for the following typical working environments: - Outdoor installation, exposed to wind, sand, rain, snow, frost, sunlight, large day-night temperature differences, dust, etc. Naturally, they are even more suitable for indoor installation.

1. Both humid and dry environments. Ambient temperature: -30°C to 60°C.
2. Environments with salt spray, mold, or humidity, such as docks, ocean-going, or inland vessels.
3. Work environments containing corrosive gases, such as chemical plants.
4. Areas with severe vibrations, such as steam pipelines and ships.