FLOW CONTROL DEVICE

摘要

A normally closed container containing liquid therein and having a single pinch valve secured thereto. The pinch valve releasably clamps a portion of a resilient liquid discharge tube and also releasably clamps a portion of a resilient inlet tube which introduces air into the container in discharging liquid out of the container. The timing of opening and closing of two tubes with respect to operation of the pinch valve is determined as desired.