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Drop-In Check Valve

Drop-In Check Valve

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, but 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 blowout is going to be happened,the thread connections of the kelly is screw out immediately and put the check valve is into the drill pipe and then pumped downward to the required place.Thus the blowout can be prevented.

 When Ordering Please Specify:

  1. Smallest bore in drill string through which the check valve must pass.
  2. Landing sub connection size and type.
  3. Outside diameter of mating tool joints.

Specifications – Drop-In Check Valve

Specification

Check Valve Assembly

Landing Sub

Stop Ring

Working Pressure
(MPa)

Connection API

O.D.(mm)

O.D.(mm)

I.D.(mm)

FT89

33

89

30

35
(70)

NC26

FT105

36

105

33

NC31

FT121

50

121

46

NC38

FT159

54

159

50

NC46

FT168

68

168

64

NC50

FT178

68

178

64

5 1/2 FH

FT203

68

203

64

6 5/8 REG

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