| 摘要 |
A vertical subsea Xmas tree (200) having a production bore (203) and two valves (10) in the production bore (203). Each valve (10) has a valve gate (18, 20) which is functionally connected to an actuator (38, 40) moving the valve gate bidirectionally between an open position and a closed position. The production bore (203) is sealed off by the valves (10) in the closed position. The valve gate (18, 20) is provided with a string cutting edge (34). |
