Description

FT Series Drop-in Check Valve

 

FT drop-in check valve is a kind of Inside BOP(blowout preventer )in the drill string. It is simple in structure and easy to operate. When blowout is going to be happened the thread Connections of the Kelly are screwed out immediately and back pressure valve sub is into the I.D. of drill pipe and then pumped downward to the required place. Thus the blowout accident can be prevented, Drop-in check valve consists of back pressure sub and check valve assembly. Back pressure sub is connected with stop ring and tightened on and put into downhole drilling with drill string. Back pressure sub is used as a sub above drill string before check valve assembly is run in downhole drilling.

Product Parameters:

Model Valve Assy. OD Landing Sub Conn. Working Pressure OAL
mm(inch) OD mm(inch) ID mm(inch) (MPa) mm(inch)
FT105 39(1 17/32) 104.8(4 1/8) 40.5(1 5/8) NC31 35, 70, 105 572(22 13/25)
FT121 51(2 1/64) 120.7(4 3/4) 53(2 3/32) NC38 794(31 1/4)
FT127 52(2 1/16) 127(5) 54(2 1/8) NC38 794(31 1/4)
FT159 68(2 11/16) 159(6 1/4) 70(2 3/4) NC46 867(34 1/8)
FT162 69(2 23/32) 162(6 3/8) 71(2 13/16) NC50 872(34 5/16)
FT165 67(2 41/64) 165(6 1/2) 69(2 23/32) NC50 872(34 5/16)
FT168 68(2 11/16) 168(6 5/8) 70(2 3/4) NC50 867(34 1/8)
FT190 78(3 5/64) 190(7 1/2) 80(3 9/64) 5-1/2FH 906(35 11/16)
FT203 67(2 41/64) 203(8) 69(2 23/32) 6-5/8REG 883(34 3/4)
FT241 114(4 1/2) 241.3(9 1/2) 116(4 9/16) 7-5/8REG 975(38 3/8)