CE Compliant certified

CE Compliant

Made in the U.S.A. certified

Made in the U.S.A.

Precise Air Sizing for Medical Grade Tubing

Precise Air Sizing for Medical Grade Tubing encompasses ultra-low air pressure regulators engineered for medical tubing extrusion, catheter manufacturing, and multi-lumen tubing production. OLC's MicroAir series delivers hysteresis-free, stable pressure control from below 1 inch of water to 5 psi, ensuring consistent outside diameter throughout the extrusion process.

Single Channel MicroAir II
Single Channel MicroAir IV
Dual Channel MicroAir II
Dual Channel MicroAir I
Dual Channel MicroAir IV
Single Channel MicroAir I
MultiAir 4-channel MicroAir IV
MultiAir 3-channel MicroAir IV
MultiAir 3-channel MicroAir II
MultiAir 3-channel MicroAir I

Our Range of Products

Single Channel MicroAir II

Single Channel MicroAir II

  • Contact closure input from O.D. gauge control
  • 0.1" water resolution with digital display
  • Hysteresis-free viscostatic damping for stability
Single Channel MicroAir IV

Single Channel MicroAir IV

  • Sub-0.1 sec response via voice-coil motor
  • 0-10V PLC input with 3 operational modes
  • ±0.1% full-scale accuracy below 60" water
Dual Channel MicroAir II

Dual Channel MicroAir II

  • Dual channel for multi-lumen tubing control
  • Hysteresis-free action via viscostatic damping
  • Contact closure + manual 30-turn knob control
Dual Channel MicroAir I

Dual Channel MicroAir I

  • Dual channel manual 30-turn knob control
  • Hysteresis-free, stable pressure regulation
  • Stainless steel enclosure, CE compliant
Dual Channel MicroAir IV

Dual Channel MicroAir IV

  • Sub-0.1 sec response for bump & taper tubing
  • 0-10V analog input for PLC integration
  • Dual channel for multi-lumen pressure control
Single Channel MicroAir I

Single Channel MicroAir I

  • Regulates below 1" of water precisely
  • 30-turn knob for fine manual pressure control
  • 10-20 year expected service life

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Frequently Asked Questions

What pressure ranges are available for medical grade tubing air sizing regulators?

OLC MicroAir regulators cover pressure ranges from 0–2 inches of water up to 0–5 psi, with multiple selectable ranges in between including 0–3 inches, 0–5 inches, 0–10 inches, 0–15 inches, 0–30 inches of water, and 0–3 psi. Each unit can be configured with the range best suited to your specific tubing extrusion process.

What is the difference between MicroAir I, II, and IV product lines?

Can these regulators be used for multi-lumen catheter tubing production?

How fast is the response time on the high-speed MicroAir IV models?

Are OLC air pressure regulators compatible with PLC control systems?

Do OLC regulators require calibration or regular maintenance?

What warranty and support does On Line Controls provide with each unit?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Medical Device & Catheter Manufacturing

Medical Device & Catheter Manufacturing

Precise ultra-low air pressure control ensures consistent OD and wall thickness in catheter and medical tubing extrusion lines.

Automotive Tubing Production

Automotive Tubing Production

Stable air sizing regulators maintain tight diameter tolerances during high-volume automotive tubing and plastic profile extrusion.

Multi-Lumen Tubing Extrusion

Multi-Lumen Tubing Extrusion

Multi-channel MicroAir systems independently control each lumen, ensuring structural integrity in complex multi-lumen tubing products.

Plastic Profile & Specialty Extrusion

Plastic Profile & Specialty Extrusion

From micro-tubes to plastic straws and bump-taper profiles, MicroAir regulators deliver accurate pressure across varied extrusion processes.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Why Medical Tubing Manufacturers Choose On Line Controls, Inc.

Hysteresis-Free Precision Control

MicroAir regulators deliver stable, drift-free air pressure from below 1 inch of water to 5 psi, ensuring consistent tubing outside diameter throughout every extrusion run.

44+ Years of Industry Leadership

Founded in 1980, OLC is the recognized industry standard for ultra-low air pressure regulators, trusted by leading extruder OEMs and medical tubing manufacturers worldwide.

3-Year Warranty & Lifetime Support

Every MicroAir unit ships with a 3-year parts and labor warranty, unlimited phone support, and a 10–20-year product lifespan requiring minimal maintenance.

Get Expert Guidance on Your Air Sizing Application

Submit your inquiry and our specialists will respond with tailored recommendations, pressure range guidance, and a custom quotation for your extrusion line.

Contact Us Today

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.