Abstract: Curtain coater for discharging liquid or pasty application medium in the form of a curtain moving substantially under the force of gravity onto a moving paper or board web, comprising a nozzle body which has a first distributor chamber extending along a discharge width, to which the application medium is supplied via at least one supply line, and in the flow direction (S), a flow channel which breaks up the application medium into sectional flows, and has a second distributor chamber, which discharges the application medium as a curtain via an outlet slot, wherein in the flow direction, the second distributor chamber has a flow path with a plurality of direction changes, which runs through throttling points and expansion chambers.