
Single Channel MicroAir II
- Ultra low range: 0-3" water to 0-5 psi
- 0.1" water resolution digital display
- Contact closure & manual dual control
CE Compliance
Made in USA
On Line Controls, Inc. offers a complete line of MicroAir ultra-low air pressure regulators engineered for OEM tubing manufacturers. Spanning single, dual, 3-channel, and 4-channel configurations, these precision instruments control internal air pressure during plastic tubing extrusion with hysteresis-free operation, high-speed response, and CE-compliant design for global deployment.










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MicroAir regulators are available in multiple ultra-low pressure ranges starting from 0–2" of water up to 0–5 psi. The MicroAir I line also offers extended ranges including 0–5", 0–10", 0–15", and 0–30" of water. Each unit can be specified to match the exact requirements of your tubing extrusion process, and range change services are available.
Talk to our experts for custom solutions and tailored guidance.

Precise ultra-low air pressure control for catheter and medical tubing extrusion lines requiring tight dimensional tolerances.

Reliable pressure regulation for automotive tubing extrusion, ensuring consistent OD control across high-volume production runs.

Stable, hysteresis-free air pressure supply for plastic profile and straw extrusion with consistent dimensional output.

Integrated OEM supply of MicroAir regulators for extruder builders requiring certified, USA-made pressure control components.
Talk to our experts for custom solutions and tailored guidance.
Founded in 1980 and laser-focused on plastic tubing extrusion, OLC is the recognized industry standard for ultra-low air pressure regulation worldwide.
MicroAir regulators deliver hysteresis-free control with a proven 10–20 year lifespan, backed by a 3-year warranty and unlimited phone support.
All units are manufactured in Shrewsbury, MA and shipped worldwide via UPS, DHL, or FedEx to customers across 18 countries with CE compliance.
Submit your application details and an OLC engineer 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.