In a device for treating a liquid foodstuff product containing a solid with a heat exchanger charged with the foodstuff product under pressure and/or a degasser, which is charged with a reduced pressure, followed or preceded by a pressure reduction device, the pressure reduction device has at least one brake pump through which the foodstuff product flows. In a method the pressure with which the foodstuff product is conveyed through the brake pump is reduced by a rotary movement of the brake pump.
