Hi, has anyone built or better yet has plans or a web site on building your own vacuum generator used with a compressor. I would assume that they are a venturi.
Thanks Eric
Hi, has anyone built or better yet has plans or a web site on building your own vacuum generator used with a compressor. I would assume that they are a venturi.
Thanks Eric
Eric, As a start you might want to go to this site:
HTH PJ
I used to make them at my old job. Yes it works by using a venturi. I don't have the dimensions. I do have one that ended up in the scrap.
Mike H
I'm pretty sure they're just a special venturi too.
They sell them for air conditioning use. I personally have no experience using one, but have heard they're slow, and don't do as good a job as a real vacuum pump. Also heard if used a lot, can generate whopping electric bills due to excessive compressor run times.
Why not use the intake port of the air compressor to create a vacuum?
That's what I do when I vacuum bag my composite layups.
I have a word doc somewhere if y'all are interested.
Bart D. Hull snipped-for-privacy@inficad.com Tempe, Arizona
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Eric J. Comeau wrote:
Expensive to operate, poor vacuum, and loud pretty much sums these up.
If you want a project to build, converting an old compressor or lawnmower engine (or V8, whatever suits your needs) into a vacuum pump is a heck of a lot better project. Or machine the whole thing up from raw stock, if that suits you better. You can also buy half-decent vacuum pumps surplus for not too much money.
Harbor Fright sells them for ablut $9
jk
I was been told by an air conditioning instructor that they work fine for very occasional use. Otherwise, the warnings about the electric bill on the compressor / compressor wear are valid.
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