| 摘要 |
A top-mounted type ball valve comprises a valve body (1), a valve cover (2), a valve stem (3), a ball body (4) and a valve seat (5). The valve seat (5) is mounted in a valve seat support (6). An elastic element (7) extending into the valve seat support (6) is provided on the valve seat (5). A limit pin (8) is fixed to a side, adjacent to the valve cover, of the valve seat support (6), and matches and positions to a hole on the valve cover (2). The top-mounted type ball valve has a reasonable structure, is simple to maintain and operate, and has a large room to be operated without affecting a function of an elastic element. |
