Model QKF Full Open Safety Valve
Model QKF full open valve is a driving control valve in the drill string cycle system with manual control of special wrench which can rotate 90 degrees, so that the switch can be realized as to achieve the goal of blowout control and spray proof.
Specifications
| Specifiaction | Connection |
Min. Hole Diameter mm (in) | Max. O.D. mm (in) | Max. Working Pressure Mpa |
| QKF127 | NC38 | 26 (1) | 127（5） | 70 |
| QKF168 | NC50 | 71.4（2 13/16） | 168（6 5/8） | 70 |
| QKF178 | NC50 | 76.2(3) | 178 (7) | 70 |