The invention discloses a direction-selecting seal ball valve or butterfly valve or plug valve. A circular hole (1c) at the lower end of a valve plug (1) and a circular plug (5) in the circular hole are matched on a track platform (3d) of a circular shaft (3a) at the upper end of a footstock (3), and a rolling gap (3b) is remained; two hole walls where a vertical square hole (1d) at the upper end of the valve plug and a flow through hole (1a) are vertical are provided with arrow keys (1e) with upward arrow points; pin rollers (11) are arranged on another two sides. The surface of a square rabbet (2a) at the lower end of a valve rod (2) inserted in the vertical square hole (1d), matched with the arrow pins (1e), is also provided with arrow pins (2c) with downward arrow points; and inverted cones (2b) with small upper parts and big lower parts are arranged on another two sides. When the valve rod (2), and a limit pin (11) and a roll sleeve (12) and a valve rod enhancing sleeve (10) go down along vertical groove tracks and helical groove tracks (4a) on a bracket (4), gaps between inclines (2b) on the rabbet (3a) and the pin rollers (7) on the valve plug (1) are increased, a different pressure force pushes the valve plug (1) to roll towards the outlet, the downwards arrow points of the arrow pins (2c) can press the upwards arrow points of the arrow pins (1e) to forcedly push the valve plug (1) to roll towards a valve seat; otherwise, the gaps are reduced, the inclines (2b) reversely push the valve plug (1) to be centered.