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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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