
Single Channel MicroAir II
- Contact closure input from O.D. gauge support
- Hysteresis-free with viscostatic damping action
- Better than 0.1" water resolution with display
CE Compliant
Made in the USA
MicroAir Regulators for Wire Jacketing Extrusion by On Line Controls, Inc. are ultra-low air pressure regulators engineered for precise internal air support during plastic tubing extrusion. Available in single, dual, and multi-channel configurations with manual, contact closure, or 0-10V PLC control, they deliver hysteresis-free, stable pressure regulation for medical, automotive, and multi-lumen tubing applications.










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A MicroAir regulator is an ultra-low air pressure controller used to regulate internal air pressure inside plastic tubing during free extrusion. It balances output pressure against a low-tension spring and vents surplus air to maintain a precise, stable set point. This controls the outside diameter of the tubing or jacketing with hysteresis-free accuracy, even as flow rates vary.
Talk to our experts for custom solutions and tailored guidance.

Precise ultra-low pressure control for catheter, multi-lumen, and micro-tube extrusion to meet tight OD tolerances.

Reliable air pressure regulation for automotive plastic tubing extrusion requiring consistent wall thickness and OD.

Stable, hysteresis-free air control for plastic profile and straw extrusion with precise diameter management.

Integrated MicroAir pressure control systems for OEM extruder builders requiring precise, programmable air management.
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Since 1980, OLC has been the recognized industry leader in ultra-low air pressure regulators, serving plastic tubing manufacturers across 18 countries worldwide.
MicroAir regulators deliver hysteresis-free, stable pressure control from below 1" of water to 5 psi, with 10–20+ year product lifespans and no calibration required.
Every unit ships with a 3-year warranty on parts and labor, unlimited phone support, and range change services to keep your extrusion line running without interruption.
Submit your requirements and our team will respond with product recommendations, pricing, and technical guidance tailored to your 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.