Proportional valves precisely control output flow by varying the internal orifice with the amount of input current applied to the solenoid.  The miniature direct-acting PC3 has been tested to 100 million cycles featuring fast response, quiet operation, low hysteresis, and consistent flow “gain” throughout its range.  It is an ideal choice for specialty application in high tech market segments such as analytical instrumentation, testing and measurement, medical devices, process control, and also with factory automation.