
Single Channel MicroAir II
- Contact closure input from O.D. gauge
- Hysteresis-free viscostatic damping action
- 0.1" water resolution with digital display
CE Compliant
Made in the U.S.A.
On Line Controls, Inc. offers a comprehensive range of ultra-low air pressure regulators — the MicroAir series — engineered specifically for catheter and medical tubing manufacturers. Available in single, dual, and multi-channel configurations with manual or PLC-compatible control, these precision instruments maintain stable internal air pressure during plastic tubing extrusion with hysteresis-free operation and response times as fast as 20 milliseconds.










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OLC's MicroAir regulators are not lock solutions but are critical for catheter tubing manufacturing — they precisely control internal air pressure during extrusion to maintain consistent OD and wall dimensions. All units are CE compliant for international shipping. For FDA-approved catheter lock solutions (e.g., taurolidine or heparin), consult your clinical or regulatory team.
Talk to our experts for custom solutions and tailored guidance.

Precise ultra-low air pressure regulation for catheter and medical tubing extrusion, ensuring consistent OD and wall dimensions.

Multi-channel MicroAir regulators independently control each lumen's air pressure for complex catheter and multi-bore tubing.

MicroAir regulators maintain stable internal air pressure for precise diameter control during automotive plastic tubing extrusion.

Ultra-low pressure regulators ensure dimensional accuracy and stable air sizing across plastic profile and straw extrusion processes.
Talk to our experts for custom solutions and tailored guidance.
OLC MicroAir regulators achieve hysteresis-free control down to below 1 inch of water, ensuring consistent catheter tubing OD and wall integrity during extrusion.
MicroAir IV models respond in under 0.1 second (typically 20 ms) and accept 0-10V analog input, enabling seamless integration with PLCs for bump and taper catheter profiles.
Founded in 1980, OLC backs every unit with a 3-year warranty, unlimited phone support, and products engineered for 10–20+ year lifespans with minimal maintenance requirements.
Submit your inquiry and an OLC specialist will respond with product recommendations, pricing, and technical guidance tailored to your tubing process.
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.