knife edge gate valve Manufacturer, knife edge gate valve factory China

Knife edge gate valve is also called knife gate valve, knife blade gate valve, knife type gate valve, knife edge valve, sluice valve, slurry valve, mud valve. The opening and closing part of the knife edge gate valve is one sharp blade-shape plate, which will move up and down perpendicular to the flow direction of the medium.

 Belo Valve is one professional knife edge gate valve Manufacturer, knife edge gate valve factory in China.

Types of knife edge gate valve

With different stem structure, there are rising stem knife edge gate valve and non rising stem knife edge gate valve. 

With different operating device used, knife edge gate valve can be divided into manual knife edge gate valve(including hand wheel manual knife edge gate valve and chain wheel manual knife edge gate valve), electric actuated knife edge gate valve, pneumatic operated knife edge gate valve, hydraulic operated knife edge gate valve,etc. 

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According to different body material used for knife edge gate valve, there are cast iron knife edge gate valve, ductile iron knife edge gate valve, carbon steel knife edge gate valve, stainless steel knife edge gate valve,etc. 

According to different sealing material used, knife edge gate valve can be divided into soft sealing knife edge gate valve(also called resilient seated knife edge gate valve) and metal to metal hard sealing knife edge gate valve, unidirectional sealing knife edge gate valve, bidirectional sealing knife edge gate valve. 

Advantages of knife edge gate valve: 

1. The lifting sharp sealing surface of the knife edge gate valve can scrape off the sticky matter on the sealing surface and clean up the sundries automatically. 
2. The blade-shaped disc of the knife edge gate valve is made of stainless steel, which can prevent the sealing leakage caused by corrosion. 
3. The sealing surfaces of the knife edge gate valve can be made of hard metal materials, which can ensure the wear resistance performance of the sealing surface of the knife edge gate valve. 
4. There is no groove on the sealing surface of the knife edge gate valve body, and so there won’t be any medium accumulation, which can ensure the flexible opening and closing. 
5. The face to face length of the knife edge gate valve is short, which can save the manufacturing material, and the installation space, and effectively support the pipeline strength. 
6. The scientific upper sealing stuffing design of the knife edge gate valve makes the upper sealing safer, more effective and durable. 
7. The guide block of the valve body of the knife edge gate valve can guarantee the valve plate move correctly, and the four extrusion blocks can ensure the effective sealing performance of the valve plate. 
8. The rib design of the valve body improves the strength of the valve body of the knife edge gate valve. 
9. The stainless steel valve shaft of the knife edge gate valve is more durable, and the stud bolts make the opening and closing of the knife edge gate valve more rapid. 
10. The knife edge gate valve can be operated by various actuators, like hand wheel, chain wheel, pneumatic actuator, electric actuator, hydraulic actuator,etc. 
11. The knife edge gate valve with diameter over 150mm will adopts a fully enclosed structure, which is more effective for opening and can prevent leakage. 
12. The viton sealing surface can achieve zero leakage sealing effect, and increase the working temperature of the knife edge gate valve. 
13. The natural rubber sealing surface of the knife edge gate valve is directly vulcanized on the valve body of the knife edge gate valve, and won’t fall off easily. 

knife edge gate valve Manufacturer, knife edge gate valve prices, knife edge gate valve factory China.

Maintenance of knife edge gate valve: 

1. The hand wheels, handles and other operating actuators are not allowed to be used for lifting, and also collisions are strictly prohibited. 
2. Double plate knife edge gate valve should be installed vertically(that is, the valve shaft should be in a vertical position and the handwheel is facing upwards). 
3. For the actuated knife edge gate valve, the operating device should be installed according to direct of the instruction manual. 
4. If the knife edge gate valve is opened and closed frequently, lubricate it at least once a month. 

Where knife edge gate valve is used: 

The knife edge gate valve has one sharp blade-shape plate at the bottom of the valve body, which has great cutting-off effect. So knife edge gate valve is suitable for medium like slurry, power and fiber,which are difficult to control. Knife edge gate valve is widely used in paper making, petrochemical, mining, drainage, food and other industries. 

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Tips for knife edge gate valve: 

The opening and closing part of the knife edge gate valve is one sharp blade-like plate, which will move up and down perpendicular to the fluid direction of the medium. The knife edge gate valve can only be fully opened and fully closed, and cannot be used for adjusting or throttling.