Single Channel MicroAir II
- Contact closure input from O.D. gauges
- Hysteresis-free, viscostatic stable action
- Dual-speed manual up/down buttons
CE Compliant
Made in the U.S.A.
On Line Controls' MicroAir ultra-low air pressure regulators prevent tubing collapse during extrusion by maintaining precise internal air pressure. Available in single, dual, and multi-channel configurations with manual or PLC-compatible controls, these regulators serve medical, catheter, automotive, and multi-lumen tubing manufacturers worldwide with 10–20+ year service life.
Talk to our product experts for custom solutions.
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During free extrusion, plastic tubing exits the die in a molten state and must be supported by a precisely controlled column of internal air until it cools and solidifies. Without adequate internal pressure, atmospheric forces cause the tubing walls to collapse inward. MicroAir regulators maintain a constant, ultra-low set-point pressure — often just fractions of an inch of water — to keep the lumen open without over-inflating or distorting the wall structure.
Talk to our experts for custom solutions and tailored guidance.
Precise ultra-low pressure control for catheter and medical tubing extrusion to meet strict dimensional tolerances.
Stable internal air pressure regulation for automotive tubing extrusion, ensuring consistent OD and wall thickness.
Maintains constant pressure across varying flow rates to prevent collapse in plastic profile and straw extrusion lines.
Independent per-channel pressure control for each lumen in complex multi-lumen catheter and tubing extrusion.
Talk to our experts for custom solutions and tailored guidance.
Founded in 1980, OLC has specialized exclusively in ultra-low air pressure regulation for plastic tubing extrusion, making us the recognized industry standard.
Our MicroAir regulators maintain hysteresis-free, stable pressure at ultra-low ranges, preventing collapse and ensuring consistent tubing OD throughout production runs.
Every unit ships with a 3-year warranty, unlimited phone support, and is built for decades of reliable service — minimizing downtime and replacement costs on your line.
Submit your application details and our engineering team will respond with product recommendations and pricing 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.