The design and manufacture of Annular BOP is according to API Spec 16A standard.
• Packing element is spherical or tapered type with massive storage volume, low operation pressure and excellent sealing function.
• Piston is set in low position to have a shorter moving distance; Use wear ring on piston.
• Lip type seal rings are used to realize long service life.
| Working Pressure(Psi) | Bore Size (in) | ||||
| 7-1/16 | 11 | 13-5/8 | 20-3/4 | 21-1/4 | |
| 2000 | -- | -- | -- | -- | √ |
| 3000 | √ | -- | -- | -- | -- |
| 5000 | √ | √ | √ | √ | -- |
| 10000 | -- | -- | -- | √ | -- |
| 15000 | -- | -- | -- | -- | -- |