Combined bathtub supply and overflow fixture with shower diverter valve and integrated backflow preventer.

摘要

The water mixer for the bath is arranged under the upper edge of the fitting. The security against back flow uses a separator with three chambers built in the form of a cartridge, for mounting under the level of the bath rim. A membrane (1) in the discharge valve (2) is influenced by flow-back pressure. The closing force on the valve due to the hydraulic pressure, is opposed by two opening forces, resulting from the reduced hydraulic pressure in the central region (13), and the spring force of the valve. Light control forces result, and no assistance is provided.