4" tube with .1875" output hole?

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4" tube with .1875" output hole?

Post  projeto on Mon Jul 27, 2009 7:13 am

Hello everyone, i am very new to this subject but I am trying to build my own nozzle, but I want to see if it is possible make the output smaller. Has anyone tried to do this using a 4" tube? I would like to see an output stream around 3/16". If anyone has tried, i would love to see the results. Maybe someone out there with a working 4" could try a 3/16" out hole (7.9 or 8mm).

I am also interested on how the Pentair Jet Nozzle has straight side walls on its output plate? Has anyone else been able to do this as well?

Can not wait to hear back from ya.
Dave


Last edited by projeto on Mon Jul 27, 2009 11:32 pm; edited 1 time in total (Reason for editing : wrong number in subject line)

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Re: 4" tube with .1875" output hole?

Post  Werner_tom on Mon Jul 27, 2009 7:56 am

hi projeto,

here you can see 2 Videos with a 4" tube und a 8mm Outlet

http://laminar.forumotion.com/laminar-nozzle-talk-and-pictures-f1/problems-with-the-beam-t58.htm

for short beams it works ok

mfg
Thomas

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Re: 4" tube with .1875" output hole?

Post  liteglow on Mon Jul 27, 2009 8:29 am

Hi there and welcome to this forum :-)

I dont think there is any rule about the size of the nozzle\output !
But if the output\nozzle is smaller, you will not be able to have the water beam travel so long distance (And not so high) .

Anyway, size does not matter haha, just see my mini-project :



Of course that small output give you a small distance..
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Re: 4" tube with .1875" output hole?

Post  projeto on Mon Jul 27, 2009 9:10 am

I need it to travel around 8 feet, with a 3/16" or 1/4" beam. Has anyone got a small beam to travel that far?

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Re: 4" tube with .1875" output hole?

Post  John on Mon Jul 27, 2009 10:19 am

I built a 4" nozzle with a .5" (13mm) output, and the water would only jump about about 3 foot (~1m) arc. If you take the ratio of the 8" to the .5" diameter output the ratio is about .0625. If you multiply that by 4" you get .25". You could scale it down, but it's hard to say what is going to happen since you can't scale down water molecules. You probably can get pretty close to 8 foot arc. I would like to see it!
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Re: 4" tube with .1875" output hole?

Post  pbracer on Thu Jul 30, 2009 8:46 am

"I am also interested on how the Pentair Jet Nozzle has straight side walls on its output plate? Has anyone else been able to do this as well?"

It is total speculation on my part but my feeling is that they are able to use the atriaght wall "output nozzle" because the screens inside are not straight across but cone shaped. Chamfered output and straight screens or coned (chamfered) screens and straight output

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