| 摘要 |
The present invention relates to an external control valve for an air motor to simplify the structure of an external control valve; to facilitate the manufacturing of the external control valve; and to reduce the risk of failure. According to the external control valve for an air motor by the present invention improves the function of an air motor by simplifying the structure in which the flowing direction of air is switched over with the rotation of a valve shaft; improves durability; and facilitates operation and use for the external control valve. |
