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Posted by Kevin Clause on Wednesday, June 17, 2009 at 16:36:07 :
In Reply to: Here's a question for you mechanical types.... posted by Marty on Wednesday, June 17, 2009 at 15:20:29 :
Several thoughts here.
If the vacuum pump is designed to have the outlet vented to atmosphere it might not have the ability to pressurize a tank. If it did have the ability, you are increasing the differential pressure across the unit and that may cause it to fail prematurely.
Also, once you draw a vacuum on your inlet side you can run it all day and you still won't have any more air to add to the pressure side.