Founded in 1985, Proportion-Air is a US-based manufacturer with a global reputation for quality and excellence in industrial automation. We seek to fully understand the applications of our customers and build a product tailored to the specific process. Whether you need a single device or a thousand, we build our products to your specifications. Offering free application and technical support, we strive to quote within 6 hours of request submission. Please call or visit our website to get started!