Proportional Electronic Pneumatic Pressure & Flow Control Devices

Industrial Process Regulators

Miniature Regulators for Compressed Air Tools & Systems

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Electronic Pressure Regulators

As low as 0-2 inches of water column to 5,000 psi +

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Mechanical Pressure Regulators

Reliable process pressure control for fluids & gases

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Pneumatic Safety Regulators

Affordable, pre-set, tamper-proof safety regulators

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Mass Flow Control Valves

Closed-loop electronic mass flow controllers that control flow rates from 2 SCFH to 250 SCFM

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Pressure Transducers

Accurately measure the pressure of gases and/or fluids in industrial and laboratory processes

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Hazardous Location Products

Hazardous location valves from Proportion-Air are Factory Mutual (FM) approved for hazardous areas

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PROUDLY SERVING CLIENTS ACROSS INDUSTRY

Engineers and other manufacturing professionals looking for high-quality pneumatic control trust the Proportion-Air family to meet their most demanding requirements. From brand new start-ups to established multinational corporations, our partners know that they’re getting the most accurate, repeatable, customizable control on the market.

RECENT UPDATES

Purdue Capstone Team Builds Virtually Controlled Pneumatic Excavating Arm

The Team’s Objective At Proportion-Air, we’re proud to support students pushing the limits of electro-pneumatic control. This year, a Purdue University capstone team developed a virtually controlled pneumatic excavator, allowing an operator to control digging movements through a VR headset. By combining virtual reality with pneumatic actuation, the team created an intuitive human-machine interface where … Continued

Virtually Controlled Pneumatic Positioning – 2025-2026 Purdue Capstone Project

The Concept As the Fall 2025 semester concludes, the Proportion-Air sponsored capstone team at Purdue Polytechnic Institute has achieved significant progress on an innovative project: a virtually controlled pneumatic digging arm equipped with a bucket. This concept, originally proposed by Dr. Jose Garcia-Bravo, aims to demonstrate Proportion-Air’s advanced pneumatic control capabilities through the integration of … Continued