COVNA Knife Gate Valve

COVNA Knife Gate Valve

Manufacturing

Knife Gate Valve

in manual operated type, electric actuator type and pneumatic actuator type. Available in cast iron material and stainless steel material. Widely used in paper and pulp, mining, wastewater treatment, etc.
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What Is Knife Gate Valve? 

A knife gate valve is a valve used to handle particles, or corrosive, viscous media, providing fully open and fully closed services. Easy to operate, simple design and save space.

The knife gate valve has stainless steel and corrosion-resistant knife, which can be effectively used in industries with corrosive media and can cut off impurities and is not easy to block. Long life span. 

  • Paper and pulp
  • Power plant
  • Chemical 
  • Cement plant
  • Wastewater treatment
  • and other applications

Material Table of Main Parts Of Knife Gate Valve:

1. Valve Body 2. Gate
3. Valve Seat                               4. O-ring                                        
5. Valve Seat Cover 6. Packing
7. Pacing Gland 8. Brackte   
9. Valve Stem 10. Valve Stem Nut
11. Bearing  12. Support


 

 


 

Technical Parameter Of Electric Knife Gate Valve: 

The valve body of the electric knife gate valve adopts an integral design, with low fluid resistance and flexible and convenient operation. The screw drive of the valve adopts a double-plane bearing design, which greatly reduces the transmission friction and facilitates the opening and closing of the valve.

Actuator Type Multi-turn Electric Actuator 
Conventional Power Supply  Three-phase: AC380V 
Input Signal 4mA~20mA
Protection Class IP65, IP68
Size Range(Inch) DN50 to DN2000 (2" to 80")
Pressure 10 / 16 bar (145 / 232 psi)
Temperature -10℃ to 400℃ (14°F to 752°F )
Connection Options Flanged or Lugged
Valve Material Cast Iron or Stainless steel 304/316/316L
Seal Material PTFE, Metal hard seal or hard alloy
Flanged Standard ANSI B16.5, GB/T9113, JB/T79, HG, SH, JIS, DIN, NF, BS

Technical Parameter Of Pneumatic Knife Gate Valve: 

The pneumatic knife gate valve consists of a pneumatic actuator and a knife gate valve. The knife gate valve is light and flexible in operation, small in size, smooth in passage, small in flow resistance, light in weight, easy to install and easy to disassemble.

Actuator Type Pneumatic Cylinder (Double Acting or Single Acting Actuator)
Size Range(Inch) DN50 to DN2000 (2" to 80")
Pressure 10 / 16 bar (145 / 232 psi)
Temperature -10℃ to 400℃ (14°F to 752°F )
Connection Options Flanged or Lugged
Valve Material Cast Iron or Stainless steel 304/316/316L
Seal Material PTFE, Metal hard seal or hard alloy
Flanged Standard ANSI B16.5, GB/T9113, JB/T79, HG, SH, JIS, DIN, NF, BS

Technical Parameter Of Knife Gate Valve: 

COVNA knife gate valve with features of full bore design, low resistance and easy maintenance, two-way circulation, good wear resistance and soft seal and hard seal are optional

Operated Type Hand Wheel
Size Range(Inch) DN50 to DN2000 (2" to 80")
Pressure 10 / 16 bar (145 / 232 psi)
Temperature -10℃ to 400℃ (14°F to 752°F )
Connection Options Flanged or Lugged
Valve Material Cast Iron or Stainless steel 304/316/316L
Seal Material PTFE, Metal hard seal or hard alloy
Flanged Standard ANSI B16.5, GB/T9113, JB/T79, HG, SH, JIS, DIN, NF, BS

 


Dimension Of Knife Gate Valve: 



 

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