
Single Channel MicroAir II
- Contact closure input from O.D. gauge control
- Hysteresis-free action, viscostatic damping
- 0.1" water resolution with digital display
CE Compliant
Made in the U.S.A.
MicroAir Ultra Low Pressure Regulators by On Line Controls, Inc. deliver precision air pressure control for plastic tubing extrusion applications. Available in single, dual, three, and four-channel configurations with manual or PLC/analog control, these regulators maintain stable, hysteresis-free performance across pressures from 0-3 inches of water to 0-5 psi.










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MicroAir regulators are available in pressure ranges from 0-2 inches of water up to 0-5 psi. Specific options include 0-3", 0-5", 0-10", 0-15", and 0-30" of water and up to 0-3 or 0-5 psi, depending on the model. This makes them suitable for extremely precise, ultra-low pressure tubing extrusion applications.
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Precise ultra-low pressure control ensures consistent lumen dimensions and wall uniformity in catheter and medical tubing extrusion.

Stable, hysteresis-free air pressure regulation maintains exact outside diameter tolerances during high-volume automotive tubing extrusion.

Multi-channel MicroAir units independently regulate each lumen's air pressure for complex multi-lumen plastic tube profiles.

Ultra-low pressure regulation from below 1 inch of water supports precise diameter control in plastic straw and profile extrusion lines.
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Since 1980, OLC has been the recognized industry leader in ultra-low air pressure regulation for plastic tubing extrusion, serving customers across 18 countries worldwide.
MicroAir regulators deliver ±0.1% full-scale accuracy with hysteresis-free operation and sub-0.1-second response, ensuring consistent tubing diameter across all flow rates.
Every MicroAir unit ships with a 3-year warranty on parts and labor, unlimited phone support, and a proven 10–20 year product lifespan requiring no calibration.
Submit your requirements and our technical team will respond with pricing, configuration guidance, and application recommendations within one business day.
For immediate assistance, feel free to give us a direct call at 978-562-5353. You can also send us a quick email at olc@onlinecontrols.com.
For immediate assistance, feel free to give us a direct call at 978-562-5353. You can also send us a quick email at olc@onlinecontrols.com.