Drop-in check valve is a type of Inside Bop in the drill string. It has simple structure and easy to operate. As long as the joint thread of drill pipe is dissembled, it can drop into the pipe nozzle thus the blowout accident can be prevented after it is in the right place.
型号 Type | 阀体外径 mm O ．D．valve core | 就位接头外径 mm O. D. body | 就位接头内径 mm I．D. body | 上端内螺纹 upper box | 下端外螺纹 lower pin | 工作压力 W.P.(Mpa) |
FT105 | 36 | 105 | 35 | NC31 | NC31 |
35/70/105 |
FT127 | 51 | 127 | 53 | NC38 | NC38 |
FT168 | 67 | 168 | 69 | NC50 | NC50 |
FT178 | 68 | 178 | 70 | NC50 | NC50 |
FT184 | 68 | 184 | 70 | 5-1 ／ 2FH | 5-1 ／ 2FH |
FT203 | 76 | 203 | 78 | 6-5/8REG | 6-5/8REG |
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