Specifications
API Type HY Throw-Type Back Pressure ValveInternal blowout preventer
Size: 2 1/16" ~ 3 5/16"
API Type HY Throw-Type Back Pressure Valve
The throw-type back pressure valve type HY is an internal blowout preventer. When blowout is going to happen, the Kelly rod should be removed immediately and the back pressure valve assembly should be put into the water hole and then pumped downward to the required place. Thus, the blowout can be prevented.
Specification Series and Performance Parameters
Type
| Back Pressure Sub Assembly | Landing Sub | Connection API | |||
O.D. mm (in.) | I.D. mm (in.) | O.D. mm (in.) | I.D. mm (in.) | Length mm (in.) | ||
HY46 | 53(2 1/16) | 22 (7/8) | 121.5(4 13/16) | 54(2 1/8) | 595 (23.43) | NC38 |
HY50 | 53(2 1/16) | 22 (7/8) | 127.5(5) | 54(2 1/8) | 595 (23.43) | NC38 |
HY62 | 84(3 5/16) | 30 (1 3/16) | 159.5(6 5/16) | 86(3 3/8) | 646 (25.43) | NC50 |
HY62B | 65(2 9/16) | 35 (1 3/8) | 159.5(6 5/16) | 67(2 5/8) | 646 (25.43) | NC50 |
HY62C | 80(3 1/8) | 30 (1 3/16) | 159.5(6 5/16) | 81(3 3/16) | 646 (25.43) | NC46 |
HY62D | 66(2 5/8) | 30 (1 3/16) | 159.5(6 5/16) | 68(2 11/16) | 646 (25.43) | NC46 |
HY70 | 84(3 5/16) | 30 (1 3/16) | 159.5(6 5/16) | 86(3 3/8) | 646 (25.43) | NC50 |