Proportion-Air, Inc. is a manufacturer of electronic air pressure regulators and air 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 pressures with extreme accuracy while negating the effects of vibration, mounting position or environmental concerns.
A Wide Variety
Closed loop electro-pneumatic controls are our only business.
Our competitors are making thousands of products one way.
We manufacture one product thousands of ways.
Where Others Fear to Tread
Our years of engineering and design experience give us the confidence to take on the most problematic and exacting applications.
Proportion-Air has become The Future of Control by setting the benchmark
in Advanced Pneumatic Control Technology