Vacuum pump on Ebay

I was thinking of bidding on this but I have too many already…

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130043810353&fromMakeTrack=true

http://cgi.ebay.com/GAST-VACUUM-PUMP-1-10-HP-3450-RPM-W-ADJUSTABLE-FLOW_W0QQitemZ130044119517QQihZ003QQcategoryZ109622QQtcZphotoQQcmdZViewItem

http://cgi.ebay.com/THOMAS-VACUUM-PUMP-1-7-HP-2-5-AMP_W0QQitemZ130044120983QQihZ003QQcategoryZ109622QQtcZphotoQQcmdZViewItem

http://cgi.ebay.com/CENCO-HYVAC-7-TWO-STAGE-ROTARY-VANE-BELT-DRIVE-PUMP_W0QQitemZ130044122685QQihZ003QQcategoryZ26236QQtcZphotoQQcmdZViewItem

are these pumps good enough for infusion?

how are those pumps compare with robinar pumps?

Most all of them are oil lubed just like a Robinar type one, but may have a V belt drive instaed of a direct drive.

Check with local vacuum pump service shops for replacement parts but most of them are brand name ones.

Yes for any vacuum bagging, VIP, sheet vacuum forming and etc…