Problem to be solved: To provide a flow rate control valve capable of suppressing the burning of an evaporated component of a liquid product. [Means for solving the problem] a liquid product flow rate control device includes a valve chamber 21, an inlet portion 22, an outlet portion 23, and a valve device 30 for controlling a flow rate of a liquid product, A supply source for supplying a liquid product is connected to the inlet part 22 and the valve chamber 21, and a cooling device for evaporating and cooling the liquid product under negative pressure is connected to the outlet part 23. Selected drawing: Figure 2

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