The James Watson Company sells new & used vacuum pumps.  Their phone number is 
(770) 422-1154.  I do not know if they have a web site.  They are a direct source instead of having to buy from a medical supply company that will mark up your product.
 
Jennifer Johnson, HTL (ASCP)
 
P.S.   I have an affiliation with this company.  It is owned by my ex brother-in-law twice removed.
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