FJ Type-Arrow Back Pressure Valve is an important tool in prevention of blow out in drilling operation. Comparing to other structural valves it possess some advantage such as high strength, big flow area, high temperature resistant, high pressure resistant, and easily maintenance.
| Type |
O. D. (mm) |
Connection |
I. D. (mm) |
Working Pressure(MPa) |
| FJ229 |
229 |
7 5/8 REG |
82 |
70(35) |
| FJ203 |
203 |
6 5/8 REG |
82 |
70(35) |
| FJ178 |
178 |
5 1/2 FH |
82 |
70(35) |
| FJ168 |
168 |
NC50 |
82 |
70(35) |
| FJ165 |
165 |
NC50 |
82 |
70(35) |
| FJ159 |
159 |
NC46 |
70 |
70(35) |
| FJ121 |
121 |
NC38 |
56 |
70(35) |
| FJ105 |
105 |
NC31 |
44 |
70(35) |
| FJ89 |
89 |
NC26 |
33 |
70(35) |
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