| 摘要 |
A valve (100, 200, 300). The valve (100, 200, 300) comprises a valve body (1); a valve rod (4, 302); a valve core (2, 2', 304); a vale base (3, 305); a transmission apparatus (5', 5", 307) used for transmitting movement of the valve rod (4, 302) to the valve core (2, 2', 304); and a limiting apparatus (1h, 1g) used for limiting the movement sequence of the valve core (2, 2', 304). The limiting apparatus (1h, 1g) is used for limiting the movement of the valve core (2, 2', 304) during opening of the valve (100, 200, 300). The valve (100, 200, 300) can be opened according to a movement sequence, has a compact structure, and is easy to operate. |
