Electric Operated Knife Gate Valve

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What ís A Electric Operated Knife Gate Valve

- What is an electrically controlled knife valve or an electrically controlled shovel valve, they are internationally known as Electric Actuator Knife Gate Valve / Electrically Operated Knife Gate Valve. It is an industrial device used to regulate the flow of fluids through pipes.

- The valve works thanks to the blade part connected to the electric motor (electric controller) to help the valve open and close the flow of substances such as wastewater, clean water, mud, coal, cement, ...

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Technical Electric Operated Knife Valve

- Size: từ DN 50 đến DN 1200

- Materials of body: Gang,gang dẻo,inox , thép,..

- Chất liệu bộ điện: hợp kim nhôm,nhựa,inox,...

- Gasket: PTFE,EPDM 

- Electric motor  : 220V,380V ( 1 pha, 3 pha)

- Áp lực làm việc: PN10,PN16

- Temperature range: -5 độ C đến 200 độ C 

- Tiêu chuẩn van: I67 chống ẩm 

- Connection ends : Flanged ends ( wafer,lug)

- Media: nước sạch,thải,chất đặc sệt,...

- App;ication: xử lý nước,than,bùn, xi măng,... 

- Origin : Taiwan,Korea , Asian , Châu Âu,...

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Structure of Electric Operated Knife Valve

• Knife Gate Valve

- Knife gate valve is a valve that uses a blade to open and close directly to help prevent or let the flow of fluids through.

- The valve is composed of the following parts: blade, flange body, sealing gasket, connecting shaft and bolts and screws.

- Knife gate valve can connect with many controllers: electric controller, pneumatic controller, handwheel, ..

• Actuator of Electric Operated Knife Valve

- Unlike the electric motor of the ball valve and butterfly valve, which rotates at an angle of 90 degrees, the motor of the electric knife valve is reciprocating up and down, converting thermal energy into mechanical energy to help the valve operate.

- The electric control unit of the knife valve includes: an electric motor, reciprocating gears using voltages of 240V and 380V , designed according to I67 standard, moisture-proof, anti-electrostatic and connected to the knife valve part.

Structure of Electric Operated Knife Valve

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Operation of Electric Operated Knife Valve

- The electric actuated knife valve will operate according to the principle of reciprocating opening and closing. When the motor is energized, the gears will move up or down and pull the shaft attached to the blade to move, creating valve opening and closing phenomenon. The knife valve part will be connected with flanges to piping systems that can withstand high pressure and temperature of about 100 degrees Celsius.

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Application of Electric Operated Knife Valve

With its modern design and convenience, the electric knife valve is widely used in many different industries and fields:

- Application in manufacturing industry: pulp, suction sand, mud, coal, ...

- Application in systems to handle solid, viscous liquids, ...

- Application in wastewater treatment system, clean water, sea water, multi-use water, ..

- Application in liquid and chemical plants such as dilute acids, gasoline, oil, ...

- In addition, it is also used in hydroelectric power plants, thermal power plants, ...

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Advantages / Disadvantage Electric Operated Knife Valve

The outstanding advantages of electric knife valve:

- Knife valve has a blade, so it is good to use in dense environments

- Electric knife valve has a simple structure to save materials for valve installation and reduce weight

- The valve occupies less space which is convenient for system control and maintenance

- Flange mounting valve prevents leakage

- Made of stainless steel, anti-corrosion and durable

- Can be used in solid and liquid environments, chemicals such as petroleum, mud, sand, ...

- Fully automatic controlled by electric controller

- There is a valve that will have a handwheel in case of power failure

-  Resistant to high temperature and high pressure

- Valves can be fitted with additional components such as pressure gauges, temperature gauges, signal sets, ..

- Stable opening and closing, suitable for many systems

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