Drop-In Check valve
Drop-In Check valve
Collection
Drop-In Check valve
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Drop-In Check valve

Drop-In Check valves prevent return flow during a kick and are suitable for most   drilling situations in which return flow through the drill string is a risk and normal operation requires the benefits of a full-bore sub.By preventing upward flow through the drill pipe and allowing fluid to be pumped   downward to circulate the well, the valves provide the driller with the means to control the drill pipe pressures when required, significantly improving and simplifying well control.

When a blowout is about to happen,the thread connections of the kelly is screwed out immediately and a check valve is placed into the drill pipe and then pumped downward to the required place.Thus the blowout can be prevented.


When ordering please specify:

●Smallest bore in drill string through which the check valve must pass.

●Landing sub connection size and type.

●Outside diameter of mating tool joints.


Available model:

FT89   FT105   FT121   FT159   FT168   FT178   FT203


Specifications - Drop-In Check valve

  1   Drop-In Check valve   FT89   34   89   31   35(70)   NC26

  2   Drop-In Check valve   FT105   34   105   31   35(70)   NC31

  3   Drop-In Check valve   FT121   50   121   46   35(70)   NC38

  4   Drop-In Check valve   FT159   54   159   50   35(70)   NC46

  5   Drop-In Check valve   FT168   68   168   64.5   35(70)   NC50

  6   Drop-In Check valve   FT178   68   178   64.5   35(70)   5 1/2 FH

  7   Drop-In Check valve   FT203   68   203   64.5   35(70)   6 5/8 REG




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