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Harbor Freight has a venturi pump rated at 28.3″ of mercury and 4.2 CFM for only $17. Could this be used for a vacuum press?

April 26, 2017freight harbor mercury pump rated venturi

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Harbor Freight has a venturi pump rated at 28.3″ of mercury and 4.2 CFM for only $17. Could this be used for a vacuum press?

1 Answer

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I used that same venturi with a vacuum press for several years before I realized how inefficient it was. In May of 2005, I sent one out for lab testing (which cost a small fortune). The results were surprisingly disappointing.