difference between narmal damper and guillotine damper?

[aditya88]

difference between narmal damper and guillotine damper?

 

[micalbrch]

Have a look here:

http://dcsdampers.com/guillotine_dampers.htm

ore here:

http://www.damperdon.com/guillotine.htm

 

[rmw]

Depends on your definition of narmal (is that normal?). Dampers come in a multitude of styles and types, so what is normal to you?

The more common dampers are louvere and butterfly types, or those that rotate about a shaft or shafts that insert into the gas flow in some manner.

You can see from the links that micalbirch gave that the blades of guillotine dampers are completely out of the flow stream.

rmw

 

[clay87]

It's been a while since I messed with this stuff (not sure if you're on the right forum...). I think guillotine dampers are typically provide better isolation without control characteristics (think gate valve).

For better control, butterfly or louvre dampers. Louvre dampers have more than one blade that rotate in parallel or opposed directions. Butterfly is one disk that rotates and is not as quick for control.