"PROGRESSIVE CAVITY PUMP SINGLE SCREW PUMP" . "ECCENTRIC HELICAL ROTOR PUMP" . "RDS814049" . "8348800" . "ECCENTRIC HELICAL ROTOR PUMP" . "1999.06.30" . "A screw pump that contains one screw-rotor that together with an elastomer stator forms cavities that are transported axially from suction to discharge as the screw-rotor rotates." . "Recorded" . . "Typically applied for dirty and/or viscous liquids. 'Progressive cavity pump' is a synonym. 'Single screw pump' is a synonym." . "u20683" .