Abstract: A flow control apparatus for controlling the flow of a material from a container valve comprises a flow control member adapted to be mounted on the valve for rotation relative to the valve for adjustably positioning the flow control member relative to the valve and container and thereby adjustably setting a maximum permissible flow rate of material which can be dispensed from the container through the valve. A trigger is mounted on the container and pressed for moving the flow control member and valve stem to dispense material from the container. A ring is rotatably mounted on an annular rim of the container. The rim mounts the trigger so that it can rotate the the flow control member. Rotation of the ring rotates the trigger, and in turn, the flow control member in an easy, safe manner without risk of possible injury to the fingers from contact with a stationary trigger support.