| 摘要 |
A front water lock tongue (6) is divided into inlet and outlet parts, and to the latter is connected an outflow pipe. The pipe inserts into the outlet part, with a section (8) having an aperture (9) facing the fitment flange (2). The outlet pipe section is connected to a rear water lock tongue at a distance from that at the front. The surfaces (12,14) along which the flowing water passes have rounded eddy formations. |
