Radial Vane Louver Damper

  • Radial Vane Louver Damper
Radial Vane Louver Damper
  • THT
  • Tianjin, China
  • 25 days
  • 2000

1. It is convenient and quick to open and close, with low fluid resistance and easy operation.
2. Simple structure, small size, short structure length, small volume, light weight, suitable for large caliber valve.
3. It can transport mud and store the least liquid at the pipe mouth.
4. Under low pressure, good sealing can be achieved.
5. Good regulation performance.
6. When the valve seat is fully open, the effective flow area of the valve seat channel is large and the fluid resistance is small.
7. The opening and closing torque is small, because the butterfly plates on both sides of the rotating shaft are basically equal to each other under the action of medium, and the direction of torque is opposite, so it is easier to open and close.
8. The sealing surface materials are generally rubber and plastic, so the low-pressure sealing performance is good.
9. Easy to install.
10. The operation is flexible and labor-saving. Manual, electric, pneumatic and hydraulic modes can be selected.

Radial Vane Louver Damper



The multi blade Radial Vane Louver Damper can be opened flexibly. All the pull rods are equipped with spherical joint bearings. The connection mode is flange connection. The air flow is smooth and the adjustment percentage is accurate. The opening of proportional adjustment is even. The design is very reasonable. Used for fan inlet, blower inlet, induced draft fan inlet, air duct flow regulating pipe.


The Radial Vane Louver Damper adopts differential connection, and the guide vane and shaft are connected by bolts, and the guide vane is plug welded with the shaft after opening holes on the guide vane. The connecting plate and connecting rod of regulating door are made of 2Cr13 instead of cast iron.


The Radial Vane Louver Damper can be driven by electric actuator, cylinder and manual worm gear.


Special attention requirements: Radial Vane Louver Damper is divided into left-hand and right-hand rotation, which is related to the fan outlet direction. Customers need to provide extension drawings.



1. It is convenient and quick to open and close, with low fluid resistance and easy operation.


2. Simple structure, small size, short structure length, small volume, light weight, suitable for large caliber valve.


3. It can transport mud and store the least liquid at the pipe mouth.


4. Under low pressure, good sealing can be achieved.


5. Good regulation performance.


6. When the valve seat is fully open, the effective flow area of the valve seat channel is large and the fluid resistance is small.


7. The opening and closing torque is small, because the butterfly plates on both sides of the rotating shaft are basically equal to each other under the action of medium, and the direction of torque is opposite, so it is easier to open and close.


8. The sealing surface materials are generally rubber and plastic, so the low-pressure sealing performance is good.


9. Easy to install.


10. The operation is flexible and labor-saving. Manual, electric, pneumatic and hydraulic modes can be selected.


Size DN100-DN4800
Nominal Pressure0.1mpa
Suitable mediumflue gas, dust gas, combustible gas
Suitable temperature≤425℃
Leakage rate
≤1%


1. Manufacture is according to JB/T8692, and the face to face dimension is according to GB12221.


2. After assembly, test start-up and shut-down operation, which requires flexible operation and no obstruction phenomenon for many times.


BodyCarbon steel
discCarbon steel
ShaftSS420
Electric actuator


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