Proportion-Air, Inc.
"Global Leader in Proportional Electro-Pneumatic Pressure & Flow Control"
US manufacturer of proportional electronic pressure regulators, mass flow controllers and transducers for precise electro-pneumatic control.
Proportion-Air, Inc. is a US-based manufacturer of proportional electro-pneumatic pressure and flow control devices, founded in 1985 and headquartered in McCordsville, Indiana. The company designs and builds electronic pressure regulators spanning ranges from as low as 0-2 inches of water column up to 5,000+ psi, including low-pressure, high-pressure, high-flow, high-resolution (to +/-0.005% full scale) and FM-approved hazardous-location valves.
Its product lines also include closed-loop electronic mass flow controllers handling rates from 2 SCFH to 250 SCFM, pressure transducers for industrial and laboratory measurement, mechanical pressure-reducing and back-pressure regulators, and pneumatic safety regulators sold under the Burling Valve and ProtectAir brands. Products provide closed-loop control of pressure, flow, vacuum, force and tension and are customized to individual customer applications. Proportion-Air serves aerospace, semiconductor, medical and dental, pharmaceutical, microfluidics, plastics, rubber and tire manufacturing, glass, food processing, welding and process control markets, with customers including Boeing, SpaceX, Goodyear, Moog and W.L. Gore.
The company operates an online store, a distributor network across North America and internationally, and supports applications through engineering assistance, calculators, case studies and product catalogs. Manufacturing is performed in the United States and the company holds ISO certification. Proportion-Air also runs student and capstone sponsorship programs, including projects with Purdue University on virtually controlled pneumatic actuation. The company marked its 40th anniversary in 2025 and exhibits at industry events such as Automate.
Primary type & automation activities this supplier delivers:
Electronic Pressure Regulators
Closed-loop electronic pressure regulators with ranges from vacuum to 5,000+ psi.
Mass Flow Control Valves
Closed-loop electronic mass flow controllers from 2 SCFH to 250 SCFM.
Pressure Transducers
Industrial and high-pressure transducers measuring gas and fluid pressure.
Contact Proportion-Air, Inc.
WEBSITE
https://proportionair.com/PHONE
+1 877 711 5649HEADQUARTERS
United States
Company Facts
Founded
1985
Primary Role
Component Supplier
Company Size
-
Primary Region
North America
Annual Sales
-
Funding Stage
-
Funding Total
-
Certifications & Memberships
