At the attachment is a image of a hand operated vacuum pump named
"Komovskiy vacuum pump" , do any member ever see or use this kind of pum?

I want to know what is the max vacuum it can achieve.

Thanks in advance

Compositepro, I true did the same  search , but I did not see it , thanks.

By te way , do you know where can I see some details as it is make.

I can not get any , I have been searching all day long.

But it seem I?m not a good searcher.
I think someone is "pulling your leg"...the handle will allow the shaft to turn less than one revolution.

Speaking of "turning a pump backward".  When I was in high school, I needed a "hand opeated vacuum pump".  I took a tire pump, turned the packing upside down and it worked great.  I dont know the vacuum pressure I was able to develope, but I was able to distill gasolene at room temperature.  In-line pumps

2011-07-31

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