| 摘要 |
<p>Application of full water passage on one side and reduced volume for extraction on the other side, on alternate sides, are provided by a device for attachment to water taps, with at least one sealing element, esp. in connection with mouth-wash sprays. The alternating side application, for connection to water ducts, is effected by means of a positioning screw (h) and pin. The device can be made of metal or plastics, or a combination of these. The sealing element (b1) may be spherical, hemispherical, conical or flat, and can be held in position by a spring.</p> |
