Patent ID: 8402995

Claim:
A sanitary insertion cartridge, which is insertable into a sanitary liquid line and has a flow rate regulator with an elastic restrictor that delimits a control gap that changes under pressure of a fluid flowing between the restrictor and a wall of a housing of said flow rate regulator wherein: the flow rate regulator includes at least one bypass channel that has at least one channel inlet arranged upstream of the control gap relative to a direction of fluid flow, and at least one channel outlet arranged downstream of the control gap relative to a direction of fluid flow; the bypass channel has a valve, which is moveable in response to pressure of said fluid flow, against a reset force, from an open position into a closed position; in its closed position the valve closes the bypass channel; the flow rate regulator is arranged between a prefilter or filter screen and a jet regulator having at least one jet divider; the channel inlet of the bypass channel is arranged upstream of the prefilter or filter screen; the channel outlet of the bypass channel is connected downstream from at least one of the jet regulator and the at least one jet divider of the jet regulator; the valve includes a valve body, which can be moved against a reset force in the flow rate regulator; the valve body comprises an elastic material, is resilient in at least one umbrella-shaped subarea, and has on its outer circumference a peripheral sealing lip; the umbrella-shaped subarea can be moved against elasticity of the elastic material into a closed position from an open position; and the valve body is arranged above the prefilter or filter screen so that in the closed position the umbrella-shaped subarea seals against a rim region of the prefilter or filter screen.