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IBOP for Top Drive used for top drive. It includes Upper IBOP for Top Drive and Lower IBOP for Top Drive. They are used for top drive drilling system with joined one by one. It is hydraulically operated and manually operated control valves in top drive circulating system, and special use for drill stem inside blowout emergency. It has a pressure rating of 10,000psi or 15,000psi respectively at the factory. The bore of the valve body and all internal parts are special treated to prevent damage from corrosion and have a long life service.
| Type | O.D. | I.D. | Connection | OAL |
| (mm/inch) | (mm/inch) | API | (mm/inch) | |
| DSS187 Upper IBOP | 187 | 77.8 | 6-5/8REG | 572 |
| (7-23/64) | (3-1/16) | (22-1/2) | ||
| DXS187 Lower IBOP | 523 | |||
| (20-19/32) | ||||
| DSS1977 Upper IBOP | 197 | 77.8 | 6-5/8REG | 572 |
| (7-3/4) | (3-1/16) | (22-1/2) | ||
| DXS197 Lower IBOP | 523 | |||
| (20-19/32) | ||||
| DSS2167 Upper IBOP | 216 | 77.8 | 7-5/8REG | 600 |
| (8-1/2) | (3-1/16) | (25-5/8) | ||
| DXS216 Lower IBOP | 512 | |||
| (20-5/32) | ||||
| DSS254 Upper IBOP | 254 | 102 | 8-5/8REG | 800 |
| (10) | (4) | (31-1/2) | ||
| When ordering or requesting quotation, if size out of above specification, pls. specify clearly. | ||||
IBOP for top Drive(Upper,Lower Safety Valves)