... отсутствии жидкой фазы «сухой ход». Article presents factors analysis results, influencing power characteristics and service life of the pumping system. The description of the new design rubber-metal stator, reinforced by metal inserts, drive shaft and pump unit protecting device against adverse gas impact during liquid phase low fraction medium pumping or at absolute liquid phase absence (“dry running”) pumping are also presented. Materials and methods Mainstream for improving oil,...

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