| 摘要 |
A pipe interrupter, which is particularly suitable for installation in a sanitary fitting, comprises in a housing a chamber, into which a water inlet pipe, a water outlet pipe and a ventilating passage open. A resilient closing flap comprises an attachment section as well as a closing section connected thereto in the manner of a hinge. Normally, as long as reduced pressure does not prevail in the inlet pipe, the closing section covers the opening aperture of the ventilation passage into the chamber, so that on the one hand no atmospheric air may enter and on the other hand no water may emerge. However, if a reduced pressure occurs in the pipe system, which is connected to the inlet pipe, then the closing section of the closing flap tilts by a certain angle, until it closes off the opening point of the inlet pipe into the chamber and on the other hand opens the ventilation passage to the chamber. In this way, water can no longer flow back into the inlet pipe and to the pipe system connected thereto; on the other hand, the waterways connected after the chamber are ventilated. Sucking-back of contaminated water into the drinking water system, which is connected to the inlet pipe, is thus reliably prevented. The dimensions of the pipe interrupter are small so that it can be located in particular in the base region of known sanitary fittings. (FIG.
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