what thickness / gauge should ducting be?

[miles_hot]

I have got myself a nice 3hp Fox extractor and am looking to put ducting in. I know that I can wheel the thing around but I chose not to. Hence I want to put some 6" ducting in. This thing claims to move 3000 m3 / hour of air and I have heard stories of ducting on some cyclone systems running similar pressure collapsing so I wondered if there is any guidelines as to how think the steel should be on ducting...

Many thanks

Miles

 

[eoinsgaff]

Is this why plastic pipe is not used? I often wondered if a piece of copper wire was run through to earth the static that it would do. Smoother surfaces - better performance???

 

[Digit]

The actual volume of air being moved is of no consequence, any collapse would be a factor of the pressure drop, eg, a length of 6 inch open ended pipe would have little pressure drop within it, seal off the end and you are in a different ball game.
Provided you're not dealing in lengths of many metres, and air is flowing down the pipe at all times, there should be no problem with any propriety brand of tubing.

Roy.

 

[OLD]

My smaller system uses 100mm spiral duct its strong stuff if your worry about collapse have some 6inch flex as final connection back to the fox so that it can distort that and not the metal

 

[miles_hot]

My smaller system uses 100mm spiral duct its strong stuff if your worry about collapse have some 6inch flex as final connection back to the fox so that it can distort that and not the metal

Good idea - I also suspect it might help reduce sound transmission...

Miles