Humphrey proportional solenoid valves are compact and feature low hysteresis, excellent repeatability and turn down ratio's, fast response times, tight sealing and flexibility for equipment and device makers. Used in a wide variety of industry from medical device and analytical instrument to factory automation, packaging and mobile equipment. Humphrey designs and engineering experience solve application problems others cannot. We have a design for you, whether it’s off-the-shelf or tailored to your exact requirements.