High Resolution Valves | Electronic Pressure Regulators

Proportion-Air’s electronically controlled high resolution valves offer the highest resolution in the pneumatic industry with increments as small as ±0.005% of full scale with the QPV and MPV. Pressure ranges available from full vacuum through 150 PSI. These high resolution valves are available in many command signal configurations including: VDC, mA, Serial and Ethernet.


Example calibration of QPv1: 0-10 VDC = -14.7 PSI to +30 PSI (44.7 PSI total range)

Maximum resolution of ±0.005% = step increments of ±0.0022 PSI

– Vacuum through positive pressure in the same device –


Take full advantage of your sophisticated PID control loops without the drift, re-calibration, and air quality headaches of traditional I/P pressure controllers. Our high resolution valves can be mounted in any orientation and are immune to shock and vibration up to 25Gs. Manifold mount, DIN Rail and Panel Mount options available.

Proportion-Air achieves this high resolution pressure control through the use of a true proportional solenoid valve coupled to a unique analog PID control circuit. The true proportional valve eliminates digital stepping.


 Are you looking for high resolution valves with great repeatability?

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At first glance, the Proportion-Air family of ultra high resolution closed-loop electronic pressure regulators, the QPV and MPV series products, appear to be just another electronic pressure regulator with two valves and a sensor (which Proportion-Air invented, by the way). The advanced technology of these products, along with the resultant improvement in specifications in real world applications, provides the user with significantly improved resolution, virtually zero dead band, and longer valve life.

What Our Customers Say

  • What an excellent process you have for specifying parts for your customers. I am very impressed.

    Jamison B. - Monrovia, CA

  • I met with Bill today...He was impressed by your knowledge and application of your products and wanted me to thank you for your excellent support.

    Bob R. - Newark, CA

  • It is really a pleasure to work with Proportion-Air. You cannot imagine what kind of problems I have with some manufacturers. Thank you very much!

    Sungur - Istanbul, Turkey

  • I'm astonished for the quickest answer ever!

    Alessio B. -Bologna, Italy

  • I'm happy to report that the trial on the QPV1 has been going well. I'm quite impressed by the performance of the unit. I'm also very impressed by the service that I received from Nick Archer which I think merits specific attention. Nick has been extremely responsive to my emails and questions. He has been patient, has kept his word, and has always replied to me quickly with an answer or a reply to my questions. Nick has provided me with what I, and certainly others in my group, consider to be a perfect example of top notch high quality customer service.

    John C. - Columbus, Ohio

Product Catalog & How to Order Guide

Proportion Air Family Brochure
How To Order Guide

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