‘Bolt cover’ type API 16A Annular BOP features space saving design,low operating pressure and compact structure thus makes it ideal to use where space is priority. It can seal off telly, drill pipe,tool joint,drill collar,casing&tubing,wireline or any other shape of drilling tools. Stripping of pipe,tubing,and wireline through the packing element can also be accomplished at lower pressure.Awide range of sizes both in bore(from 7 1/16″ to 20 3/4″)and working pressure(from 3000pso up to 10000psi)are available to suit any work applications.
- Rubber core store glues big quantity, small friction resistance when switch pressure sealing ability.
- Using hemispherical head, no stress concentration phenomenon when under pressure, casing stress evenly, easy to tear open outfit.
- Long-life sealing element provides positive seal after hundreds of tests to full working pressure.
- Strong, simple construction- only five major parts, which simplifies maintenance.
- Sealing element design provides long stripping life.
| Model | Main bore mm(in) |
Working pressure MPa (psi) |
Operating Pressure MPa |
Connection type | Dimension mm mm |
weight kg |
||
|---|---|---|---|---|---|---|---|---|
| Top | Bottom | OD | Height | |||||
| FH18-21 | 179 (7-1/16) |
21(3000) | 8.4～10.5 | studded | fanged | 737 | 743 | 1350 |
| FH18-35 | 35(5000) | 737 | 790 | 1572 | ||||
| FH18-70/105 | 70(10000) | 1092 | 1136 | 5070 | ||||
| FH23-21 | 228 (9) |
21(3000) | 900 | 830 | 2104 | |||
| FH23-35 | 35(5000) | 998 | 1200 | 3540 | ||||
| FH28-21 | 279 (11) |
21(3000) | 1013 | 838 | 2574 | |||
| FH28-35 | 35(5000) | 1138 | 1081 | 4410 | ||||
| FH28-35/70 | 35(5000) | 1138 | 1096 | 4451 | ||||
| FH28-70/105 | 70(10000) | 1448 | 1420 | 10800 | ||||
| FH35-35 | 346 (13-5/8) |
35(5000) | 1270 | 1160 | 6400 | |||
| FH35-35/70 | 35(5000) | 1270 | 1227 | 6843 | ||||
| FH35-70/105 | 70(10000) | 1640 | 1664 | 15110 | ||||
| FH43-35 | 425 (16-3/4) |
35(5000) | 1524 | 1320 | 10834 | |||
| FH48-70 | 476 (18-3/4) |
70(10000) | 1937 | 1882 | 27161 | |||
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