| 摘要 |
Closing component of flap valve, especially of a reflux valve, as one of typical elements of water armatures, consists of a flap, equipped with an arm, firmly connected with axis, where the flap has a round plate (1), ended on side (2) of the valve seat hole with a truncated cone, having base diameter smaller than plate (1) diameter. Plate (1) has on the other side (3) a protrusion (4) with port (5), which is parallel to axis (6), furthermore the outer surfaces of plate (1) are covered with an elastic material layer (7) enabling thus (1), outside plate outline, to be an arm (8) connected firmly to the middle part (9) of axis (6). |
