A dispenser adapted to be coupled to a fluid container. The dispenser
comprises a dispensing head, an energy source, and a fluid pathway. The
dispensing head includes a fluid pump, a motor adapted to power the pump,
a trigger adapted to control the motor, and a nozzle orifice in fluid
communication with a discharge end of the pump. The fluid pathway has one
portion in fluid communication with an intake end of the pump and another
portion inside the container. In one embodiment, the fluid pump is a
peristaltic pump. The present invention may further include a valve
having a membrane for controlling flow through the valve, the membrane
having open and closed positions; and an element urges the membrane to
the closed position, and a vacuum pressure at one end of the valve may
overcome the urging of the element, thereby moving the membrane to the
open position.