PUMP

摘要

The invention concerns a pump comprising a housing (2), a working chamber (3) located in the housing (2) for the delivery of a fluid, an inlet channel (18) which is fluidically connected to the working chamber (3) for guiding the fluid into the working chamber (3), an outlet channel (19) which is fluidically connected to the working chamber (3) for guiding the fluid out of the working chamber (3), and a valve unit for controlling the flow of the fluid in the inlet channel (18) and/or the outlet channel (19), the valve unit comprising at least one valve (28) which comprises a sealing area (29) for sealing the valve (28) with respect to the housing (2), a valve disc (32) with a central longitudinal axis (35) that is movable between an open position and a closed position, and centering arms (33) which resil- iently connect the valve disc (32) to the sealing area (29) and extend about the central longitudinal axis (35) in a substantially helical manner.