Abstract: This apparatus is particularly suitable for sanitary fittings. It has a throttling insert (1) made from an elastic material and which bears against an annular shoulder (7). This throttling insert (1) is provided with a central flow opening (2) and is symmetrical to a plane normal to the flowpath. The flow opening (2) is provided with an annular regulating lip (5) on both the inflow and the outflow sides, the inflow side regulating lip increasing or decreasing the entry cross-section of the flow opening (2) as a function of the particular pressure of the water flowing through.

Abstract: An apparatus for controlling or regulating the through-flow or passage of at least one liquid, particularly for temperature regulation or control, contains at least one valve with an electrical valve drive, which is controlled by an electronic control unit. The control unit makes available the signals necessary for operating the valve drive. The power supply for the control unit and the valve drive is provided by a thermocouple, whose one side is exposed to the temperature of the liquid to be regulated and whose other side is exposed to a temperature differing therefrom. The apparatus preferably contains a storage battery.