
Single Channel MicroAir II
- Accepts contact closure from O.D. gauge input
- Dual-speed manual buttons for fast adjustment
- Better than 0.1" water resolution displayed
CE Compliant
Made in the USA
On Line Controls' MicroAir ultra-low air pressure regulators are engineered to prevent tubing collapse during extrusion by maintaining precise internal air support. Available in single, dual, 3-channel, and 4-channel configurations with manual or PLC control, these USA-made regulators serve medical, catheter, automotive, and multi-lumen tubing manufacturers worldwide.










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Tubing collapse occurs when internal air pressure inside the extruded tube is insufficient to maintain its shape as it cools. MicroAir ultra-low air pressure regulators prevent collapse by supplying precisely controlled internal air support — even at pressures below 1 inch of water — ensuring consistent tube geometry throughout the extrusion process.
Talk to our experts for custom solutions and tailored guidance.

Maintains ultra-precise internal air pressure during catheter and medical tube extrusion to ensure consistent OD and wall thickness.

Delivers stable, hysteresis-free pressure regulation for automotive tube extrusion requiring tight dimensional tolerances.

Independent multi-channel air pressure control for each lumen ensures uniform structure in complex multi-lumen tube profiles.

Prevents collapse and maintains profile geometry in plastic straw, micro-tube, and custom profile extrusion manufacturing.
Talk to our experts for custom solutions and tailored guidance.
Since 1980, OLC has been the recognized industry standard for ultra-low air pressure regulation in plastic tubing extrusion, serving customers across 18 countries.
MicroAir regulators deliver hysteresis-free, stable pressure control at ultra-low ranges, preventing tubing collapse with accuracy no generic regulator can match.
Every unit ships with a 3-year warranty on parts and labor, unlimited phone support, and a 10–20+ year product lifespan — minimizing downtime on your extrusion line.
Submit your inquiry and our engineering team will respond with the right MicroAir configuration for your tubing application and pressure range requirements.
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.