Abstract

A sanitary fitting includes a fitting housing which has a fixed housing part which is overlapped by a jacket element which can be swivelled about an axis. Projecting toward the front from the jacket element is a nozzle in which a guide bush is inserted. Together with the inner wall of the nozzle, the guide bush bounds a jacket space which is connected to the surroundings by a passage. Furthermore, the jacket space is communicated by an aeration passage to an annular channel which is communicated by an aeration line to an aeration aperture of a safeguard mechanism. Water fed through a feed line is mixed in a control cartridge and flows through the safeguard mechanism, connected downstream from the control cartridge, and through a pipe into a hose to a shower. In the case of conditions permitting backflow of water into the feed line, the safeguard mechanism prevents backflow and aerates the pipe and the hose while exposing an aeration aperture. Any water thereby escaping through the aeration aperture is conducted through an aeration channel into a deeper part of a sink.

Other References

• DIN 3266; Armaturen fur Trinkwasser Installationen in Grundstucken und Gebauden; Jul. 1986
• Din, 1988; Technische Regein fur Trinkwasser-Installationen, Dec. 198