Flow rate adjusting unit and water supply device equipped with flow rate adjusting unit

The invention relates to a flow rate adjusting unit and a water supply device equipped with the flow rate adjusting unit. The flow adjustment unit includes: a housing including a hollow cylindrical wall forming a flow path for guiding a liquid from an upstream side to a downstream side, an upstream wall disposed on the upstream side, a downstream wall disposed on the downstream side, an inlet opening, and an outlet opening; and a valve member disposed on the inside of the cylindrical wall and between the upstream wall and the downstream wall, the valve member being movable between an upstream-most position at which movement to the upstream side is restricted by the upstream wall and a downstream-most position at which movement to the downstream side is restricted by the downstream wall. A pressure receiving part which faces the inlet opening and receives a force in the downstream side direction from the liquid flowing into the flow path from the inlet opening; and an elastic biasing member that biases the val