Method for dispensing a product from a container

A method for dispensing a product from an interior volume of a container to which a power assembly is secured, the method comprising:

• (1) rotating an actuator sleeve of the power assembly in one direction 360° or less relative to the container to draw an amount of the product from the interior volume into a pump chamber and to pressurize the pump chamber;
• (2) temporarily depressing an actuator of the power assembly to open a valve that is in fluid communication with the pump chamber and that is normally biased to be in a closed position to dispense a portion of the product from the pump chamber through a nozzle for a duration of time during which the actuator is temporarily depressed;
• (3) releasing pressure on the actuator to permit the valve to return to the closed position before all of the product drawn in the pump chamber in step (1) is dispensed through the nozzle;
• (4) re-depressing and re-releasing pressure on the actuator sequentially one or more times until all of the product drawn in the pump chamber in step (1) is dispensed through the nozzle;
• and
• (5) repeating steps (1) through (4) to draw addition amounts of the product from the interior volume of the container and to dispense the additional amounts of the product through the nozzle;
• wherein, during the duration when the product is dispensed from the container, the power assembly does not rotate relative to the container, and
• wherein the power assembly is never rotated relative to the container in a direction opposite the one direction of rotation in step (1).