The invention relates to a groove valve which can be used as a wine-filling device in the production lines of Tokay and other wines. The groove valve has a pipe valve (1) whose upper end is the inlet (2); the inlet (2) has a valve cover (3) hinged on the valve (1); the lower end of valve (1) is the interface (4); the middle part of outer wall of valve (1) has a protruded annular step (5), from which to the end of interface (4) is a external screw thread, a sealing ring (10), a cushion ring (6) and a nut (9); the end of interface (4) has a sealing ring (7) and a locked screw cap (8) matching the external screw thread. The invention can avoid leakage with easy opening. |