I purchased vacuum pump at my local surplus store ($24.95). It is a Thomas Industries twin cylinder diaphragm type, kinda small (about 12″ long or so). the model number is illegible and I am unable to find it on the thomas website. My question is, how do the vacuum lines hook up? Each cylinder has its own intake and exhaust ports. If I hook up a vacuum gage to either intake port, I get 20″hg. If I hook up the exhaust port from one cylinder to the intake port of the other , I then get 26″hg on the gage. More vacuum is obviously better, but will I cause problems or damage by doing this?
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Replies
It sounds like a two stage pump. Google "two stage vacuum pump" and look for specs similar to yours and go from there. 20" Hg is not enough of a vacuum for pressing unless you're really high up, like 10,000 feet or so.
Lee
Are the cylinders or diaphrams the same size or different ??
Work Safe, Count to 10 when your done for the day !!
Bruce S.
Edited 11/27/2006 7:38 pm ET by BruceS
The cylinders are the same size. Here is a picture of the vacuum pump. any ideas on what the model # might be as well as how the vacuum lines should go would be greatly appreciated
I would say you have a two-stage, All you need now are the attachments to hook it up to your lathe for some great bowl turning.Work Safe, Count to 10 when your done for the day !!
Bruce S.
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