Understanding The Performance Of A Progressive Cavity Pump With Metallic Stator

@inproceedings{Gamboa2003UnderstandingTP,
  title={Understanding The Performance Of A Progressive Cavity Pump With Metallic Stator},
  author={Jose Gamboa and Aurelio Olivet and Juan Carlos Pi{\~n}eiro Iglesias and P. A. Gonz{\'a}lez},
  year={2003}
}
Analytical and experimental studies were carried out on a progressive cavity pump (PCP) fitted with a metallic stator with a fixed, positive clearance around the single helical rotor. This eliminates wear and greatly increases pump life, but it allows leakage or slip back to suction, which decreases the net output flow rate for a given imposed pressure rise. On the other hand, conventional PCPs have an elastomeric stator surrounding the rotor at zero clearance, so there is zero leakage until… 
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