The FJ type arrow type back pressure valve is an important tool in preventing of blowing out in dirlling operation. Comparing to other structure valve ,it has some advantages such as high strength ,big flow area,high temperature resistant,high pressure resistant, and easily maintenance.
|
Type |
OD
mm |
Thread conn. |
ID
mm |
Max.sealing pressure
Mpa |
|
FJ229 |
229 |
7 5/8 |
82 |
70, 35 |
|
FJ203 |
203 |
6 5/8 |
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 |