We're looking for a pump that will pump a mixture of 40 scfm of air plus 60 gpm of Dexron III oil, and maintain a 9 inHg vacuum on the pump suction. Discharge is to an atmospheric storage tank. We've looked at rotary lobe, gear, and air operated diaphragm pumps, and none seem to be capable of our conditions. We're scavenging oil out of a compressor bearing housing, and have a lot of air leakage through seals + internal openings. Can anyone make any suggestions?
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