Proportion-Air, Inc. is a manufacturer of electronic air pressure regulators and flow control valves. Proportion-Air, Inc. was founded in 1985 by corporate president Daniel E. Cook to capitalize on the sales and marketing prospects of the unique invention of an electronic air pressure regulator. This air pressure device was designed to accept a variety of electronic analog and digital signals in order to control pneumatic pressure with extreme accuracy while negating the effects of vibration, mounting position or environmental concerns.

Proportion-Air goes where others fear to tread: vacuum control, vacuum through positive pressure, absolute pressure, calibration to a few inches of water column or direct control to 1,000 psi. Their years of engineering and design experience give them the confidence to take on the most demanding, problematic and exacting applications.

Proportion-Air handles difficult requirements with unique advanced control technology resulting in products with superior accuracy, resolution and repeatability. This refinement of performance doesn’t mean they are delicate. Proportion-Air’s products are built tough to handle the most adverse industrial environments. Proportion-Air’s advanced “dual loop” technology allows closed loop control using many different downstream sensors in order to control different processes and applications.

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Proportion-Air, Inc.

Proportion-Air, Inc.'s headquarters in McCordsville, IN, United States

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