| 摘要 |
The present invention relates to a lock valve having an emergency control function. The lock valve includes a valve body; a main channel penetrating from one side of the valve body to the other side thereof to communicate a control unit and an operation unit; a main spool horizontally installed in the valve body to open or close the main channel; a check spool installed in the valve body to prevent backflow of the main channel; an auxiliary channel communicating the main spool and the check spool; a relief valve installed in the main channel connected to the operation unit to control the main spool; and an emergency valve having a fastening portion coupled to the valve body and a movable pin coupled to the fastening portion to horizontally move the main spool, so that the emergency valve moves the main spool by hand power to operate the main valve. |
