Arrow Back-Pressure Valve Type JF105
Arrow Back-Pressure Valve Type JF
The arrow back-pressure valve type JF is a sort of pipe inside blowout preventer. It adopts arrow valve structure. It's directly connected to drill stem, and can prevent high-pressure oil stream from blowing out from drilling tool.
Specification Series and Performance Parameters
Type |
O.D. mm (in.) |
I.D. mm (in.) |
Overall Length mm (in.) |
Connection API |
JF86 |
86 (3 3/8) |
34 (1 5/16) |
400 (15.75) |
NC26 |
JF105 |
105 (4 1/8) |
45 (1 3/4) |
400 (15.75) |
NC31 |
JF121 |
121 (4 3/4) |
57 (2 1/4) |
500 (19.69) |
NC38 |
JF152 |
152 (6) |
74 (2 15/16) |
500 (19.69) |
NC46 |
JF162 |
162 (6 3/8) |
83 (3 1/4) |
550 (21.65) |
NC50 |
JF184 |
184 (7 1/4) |
83 (3 1/4) |
550 (21.65) |
5 1/2FH |
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