The Vacuum Isolation Valve (VIV) was designed with dosage control and fluid isolation in mind. A diaphragm with a special support washer was used for this vacuum application to isolate the metal components from the controlled fluid. The Vacuum Isolation Valve was designed to snap into place without the need for additional fasteners. The Valve was designed for use with Pulse Width Modulation (PWM) to keep the overall size of the system to a minimum. The PWM also allowed for improved battery operation. It is capable of 100,000 cycles on 2 AA batteries typical.