DROP IN CHECK VALVE

Product Code : DROP IN CHECK VALVE

Description

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:

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

● Landing sub connection size and type.

● Outside diameter of mating tool joints.

Specifications - Drop-In Check Valve

Specification	Check Valve Assembly	Landing Sub	Stop Ring	Working Pressure (MPa)	Connection API
Specification	O.D.(mm)	O.D.(mm)	I.D.(mm)	Working Pressure (MPa)	Connection API
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

DROP IN CHECK VALVE

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