Endura Pumps International, Inc.

Pmc Liquiflo Equipment Co., Inc.

Francis A DuPuis

Ali M Nasr

A pump is provided which includes an axially adjustable impeller in order to adjust the distance between the impeller and a housing section adjacent the impeller and thereby increase pump efficiency. The pump also can be made to have a removable module including the impeller, a shaft for the impeller and an impeller driving member positioned on the shaft.

Modular containment apparatus for adjusting axial position of an

Pump apparatus having a wear end and a pump end is provided with a seal-pump for preventing liquid being pumped from entering the wear end. An internal pump is positioned between the wear end and the pump end of sealless pumps to direct small quantities of gas from the wear end to the pump end at a pressure which prevents liquid in the pump end to pass into the wear end. A seal is provided on a stationary ring of the internal pump which prevents fluid being pumped from contacting working portions of the internal pump.

Seal for pump having an internal gas pump

Pump apparatus having a wear end and a pump end is provided with means for preventing liquid being pumped from entering the wear end. An internal pump is positioned between the wear end and the pump end of sealless pumps to direct small quantities of gas from the wear end to the pump end at a pressure which prevents liquid in the pump end to pass into the wear end.

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Lebanon, NJ, United States of America

Francis A DuPuis