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Oil pump class
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Hydraulic feedback type thick pump
Thepumpmoveswiththehelpofthefeed-backforcewhenthepumpisoperatingsothepumpisverysuitableforsuckingheavycrudeoil.Thepumpcanworksmoothlyinaheavycrudeoilwiththeviscositysmallerthan4000centipoise.Thereisnostandingvalveinthepump.Itisnotnecessarytoinstalltheoildrainersindown-holeandthewell-testingandvapourinjectionoperationcanbedonewithoutliftingthetubingstrings. Pumpbore（mm） Lengthofplunger（m） Lengthofbarrel（m）RangeofStroke（m）SizeofconnectingTubing（in）SizeofconnectingsuckerrodPumpconstant57/38 21/2TBGCYG191.9170/38 3TBGCYG223.9170/440.6～1.22.7～6.61.8～5.13TBGCYG223.3583/44 31/2TBGCYG255.6087/57 31/2TBGCYG254.25
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