FIELD: engines and pumps.
SUBSTANCE: pump stator comprises metal body 1 and resilient lining 2 with screw channel 3 fitted therein. Inner surface 4 of said body 1 nearby pump pressure chamber body features smaller diameter to make ledge 5 at the area of connection with larger diameter inner surface 6 whereon screw groove 7 is made and filled with resilient lining elastomer.
EFFECT: higher efficiency and quality.
4 cl, 2 dwg
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