CE Compliant certified

CE Compliant

Made in the U.S.A. certified

Made in the U.S.A.

Long-Life Pressure Regulator for Continuous Extrusion Lines

Long-Life Pressure Regulators for Continuous Extrusion Lines by On Line Controls, Inc. are ultra-low air pressure regulators engineered for plastic tubing extrusion. Available in single, dual, 3-channel, and 4-channel configurations with manual or PLC control, these MicroAir units deliver hysteresis-free, stable pressure regulation with a 10–20+ year service life.

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 3-channel MicroAir IV
MultiAir 3-channel MicroAir II
MultiAir 3-channel MicroAir I
MultiAir 4-channel MicroAir IV

Our Range of Products

Single Channel MicroAir II

Single Channel MicroAir II

  • Accepts O.D. gauge contact closure inputs
  • 0.1" water resolution with digital display
  • Hysteresis-free viscostatic damped control
Single Channel MicroAir IV

Single Channel MicroAir IV

  • 0-10V input for PLC or bump/taper control
  • Sub-0.1s response, 3 operational modes
  • +/-0.1% accuracy below 60" water column
Dual Channel MicroAir II

Dual Channel MicroAir II

  • Dual-channel for multi-lumen tubing control
  • Accepts O.D. gauge contact closure inputs
  • Hysteresis-free action with damping fluid
Dual Channel MicroAir I

Dual Channel MicroAir I

  • Dual-channel 30-turn knob manual control
  • Hysteresis-free, constant pressure at all flows
  • Stainless steel enclosure, CE compliant
Dual Channel MicroAir IV

Dual Channel MicroAir IV

  • Dual-channel PLC-ready 0-10V input control
  • Sub-0.1s response for bump/taper switching
  • Stainless steel enclosure, CE compliant
Single Channel MicroAir I

Single Channel MicroAir I

  • 10-20 year long life expectancy by design
  • Regulates below 1" water with precision
  • Hysteresis-free, constant pressure output

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Frequently Asked Questions

What pressure ranges are available for MicroAir pressure regulators?

MicroAir regulators are available in a wide range of pressure options, from as low as 0–2 inches of water up to 0–5 psi. Multiple ranges are available across the product line, including 0–3", 0–5", 0–10", 0–15", and 0–30" of water, allowing precise matching to your specific extrusion process requirements.

How long do these pressure regulators typically last?

Can the pressure regulators be controlled by a PLC?

What is the response time for high-speed models?

Are these regulators suitable for medical tubing extrusion?

How many channels do I need for multi-lumen tubing applications?

Do these units require calibration or special maintenance?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Medical & Catheter Tubing

Medical & Catheter Tubing

Precise ultra-low pressure regulation for medical-grade tubing and catheter extrusion requiring tight dimensional tolerances.

Automotive Tubing

Automotive Tubing

Stable air pressure control for automotive tubing extrusion lines demanding consistent outside diameter and wall thickness.

Multi-Lumen Tubing

Multi-Lumen Tubing

Multi-channel MicroAir units independently control each lumen for complex multi-lumen plastic tubing production.

Plastic Profile Extrusion

Plastic Profile Extrusion

Reliable pressure regulation for plastic profile and straw extrusion lines requiring stable continuous air support.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Why Plastic Tubing Manufacturers Choose On Line Controls, Inc.

10–20+ Year Product Lifespan

OLC MicroAir regulators are engineered for continuous extrusion lines, delivering decades of reliable, low-maintenance service with no calibration required.

Hysteresis-Free Precision Control

Viscostatic damping and precision voice-coil motors ensure stable, repeatable pressure regulation from below 1 inch of water to 5 psi with no drift.

3-Year Warranty & Unlimited Support

Every unit ships with a 3-year parts and labor warranty and unlimited phone support from specialists with over 35 years of industry experience.

Get Expert Guidance on the Right Pressure Regulator

Submit your inquiry and our specialists will respond with a tailored recommendation and pricing — typically within one business day.

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.