
Single Channel MicroAir II
- Contact closure input from O.D. gauge or PLC
- Hysteresis-free action with viscostatic damping
- 0.1" water resolution with digital display
CE Compliant
Made in the USA
On Line Controls' MicroAir ultra-low air pressure regulators are precision-engineered for plastic tubing extrusion lines. Available in single, dual, three-, and four-channel configurations with manual or PLC/0-10V control, these CE-compliant, USA-made regulators deliver hysteresis-free performance, sub-0.1-second response, and 10–20+ year service life.










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On MicroAir manual units, turn the 30-turn fine-adjustment knob clockwise to increase output pressure. On PLC-controlled MicroAir IV units, raise the 0–10V analog input signal proportionally to your target pressure range. Always ensure your factory supply air is regulated to the recommended 45–55 psi input before making output adjustments to maintain accuracy and stability.
Talk to our experts for custom solutions and tailored guidance.

Precise ultra-low air pressure control for catheter, multi-lumen, and medical tubing extrusion to tight OD tolerances.

Consistent air pressure regulation for automotive tubing extrusion, ensuring dimensional accuracy and repeatable production quality.

Stable, hysteresis-free pressure control for plastic profile and straw extrusion lines requiring precise internal air support.

MicroAir regulators are integrated by leading OEM extruder builders including Davis-Standard, Conair, and Gimac for turnkey lines.
Talk to our experts for custom solutions and tailored guidance.
Founded in 1980 and focused exclusively on plastic tubing extrusion controls, OLC brings unmatched application knowledge to every pressure regulator solution.
MicroAir regulators deliver hysteresis-free, sub-0.1-second response with accuracy to ±0.1% of full scale and a proven 10–20+ year service life requiring no calibration.
Every unit ships with a three-year warranty on parts and labor plus unlimited phone support — ensuring your extrusion line stays running with minimal downtime.
Submit your inquiry and an OLC specialist will respond with product recommendations and pricing tailored to your extrusion application.
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.