Double Function Arrow-shaped Back Pressure Valve Type SJF
Model “SJF” Double Function Arrow-shaped Back Pressure Valve is a integrated tool which has functions of both the arrow-shaped back pressure valve and the mud globe valve.
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Detailed introduction
Model “SJF” Double Function Arrow-shaped Back Pressure Valve is a integrated tool which has functions of both the arrow-shaped back pressure valve and the mud globe valve. When used, the tool can not only prevent down-hole kick from blowout, but also prevent the mud in the Kelly and hose from flowing out, thus reducing mud loss and ensuring a clean of rig floor.
Specifications
Model | O.D. mm(in) | Connection thread of upper end API | Connection thread of lower end API | Max. Kick preventing Pressure MPa | Check pressure MPa | Overall length mm(in) |
SJF89 | 89(3 1/2) | NC26 | NC26 | 50 | 0 ~ 3 | 500(19 5/8) |
SJF121 | 121(4 3/4) | NC38 | NC38 | 50 | 0~3 | 474(18 5/8) |
SJF159 | 159(6 1/4) | NC50 | NC50 | 50 | 0~3 | 561(22) |
SJF165 | 165(6 1/2) | NC50 | NC50 | 50 | 0~3 | 642(25 3/4) |
SJF178 | 178(7) | 51/2FH | NC50 | 50 | 0~3 | 561(22) |
Key words:
Gaofeng petroleum machinery and equipment, oil and gas drilling and production downhole tools
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