aga - 15-4-2018 at 07:19
Although i have a vac pump, there is a project where i need to suck a ton of water out of a solution, which wouldn't be much good for the pump.
So, today i turned a venturii thing out of some recycled aluminium round stock, the idea being that water vapour will be blown out of the system as it
is generated, at a lower temperature than 100 C of course due to the reduced pressure.
It did not work to begin with as the position of the vacuum inlet has to be just at the point where the inner small diameter pipe widens out, on the
downstream side, as shown on this web-page: https://www.globalspec.com/learnmore/manufacturing_process_e...
The blue inlet profile was made to fit an air compressor's hose connector.
Not sure how much vacuum it develops, but it certainly sucks 
[Edited on 15-4-2018 by aga]
Vosoryx - 15-4-2018 at 07:26
Looks cool.
What are you using as a gasket? My aspirator broke recently at the gasket on the take-off and no matter how many replacements i did i couldn't get the
damn thing to seal. I suspects that's the weakest link in terms of aspirators.
I just caved and bought a diaphragm pump instead of trying to replace it again.
aga - 15-4-2018 at 07:29
The body and the vacuum connector were threaded, so i just used PTFE tape - same stuff used in plumbing.
Edit:
I suppose 'threadlock' glue would work too.
[Edited on 15-4-2018 by aga]
Ubya - 15-4-2018 at 08:51
you just saved at least 10$ and a month of waiting for shipment. GG
i want a lathe 
aga - 15-4-2018 at 10:00
The mini-lathe took about 6 weeks to get here !
Got to say tho, it's a great tool to have.
(grammar correction: 10$ is written as "$10" OR "ten dollars" for no sensible reason, seeing as it is always spoken as "ten dollars")
Edit:
I couldn't find a venturi vacuum thing on ebay that easily fitted my compressor.
[Edited on 15-4-2018 by aga]
Foeskes - 16-4-2018 at 02:06
What is the nozzle diameter?