According to requirements of customer, special specification and model products can also be desinged and manufactured.
Type Arrow Back Pressure Valve: It is an integrated tool which can prevent dowhole kick from blowout, also keep off the blowout accident. Thus reducing mud loss and ensuring a clean rig floor.
| Type |
O. D (mm) |
I. D (mm) |
Connection | Max. Seal Pressure (Mpa) |
| FJ89 | 89 | 33 | NC26 | 35 70 |
| FJ105 | 105 | 44 | NC31 | 35 70 |
| FJ121 | 121 | 56 | NC38 | 35 70 |
| FJ159 | 159 | 70 | NC46 | 35 70 |
| FJ165 | 165 | 82 | NC50 | 35 70 |
| FJ168 | 168 | 82 | NC50 | 35 70 |
| FJ178 | 178 | 82 | 5-1/2FH | 35 70 |
| FJ203 | 203 | 82 | 6-5/8REG | 35 70 |
| FJ229 | 229 | 82 | 7-5/8REG | 35 70 |