CE Compliant certified

CE Compliant

Made in the USA certified

Made in the USA

Upgrade Legacy Pressure Regulator on Extrusion Line

On Line Controls' MicroAir ultra-low air pressure regulators are precision-engineered for plastic tubing extrusion lines. Available in single, dual, three-, and four-channel configurations with manual or PLC/0-10V control, these CE-compliant, USA-made regulators deliver hysteresis-free performance, sub-0.1-second response, and 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 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 or PLC
  • Hysteresis-free action with viscostatic damping
  • 0.1" water resolution with digital display
Single Channel MicroAir IV

Single Channel MicroAir IV

  • Less than 0.1s response (typically 20ms)
  • Three modes: Dual State, Linear, Manual
  • +/- 0.1% full scale accuracy below 60" water
Dual Channel MicroAir II

Dual Channel MicroAir II

  • Dual-channel contact closure diameter control
  • Hysteresis-free stable regulating action
  • 0-3" water to 0-5 psi pressure range options
Dual Channel MicroAir I

Dual Channel MicroAir I

  • Dual-channel manual 30-turn knob control
  • Hysteresis-free stable pressure regulation
  • Stainless steel enclosure, 16" x 10" x 6"
Dual Channel MicroAir IV

Dual Channel MicroAir IV

  • Dual-channel PLC-ready 0-10V input control
  • Sub-0.1s response for bump/taper switching
  • Voice-coil motor with viscostatic damping
Single Channel MicroAir I

Single Channel MicroAir I

  • Regulates below 1" water with high precision
  • 10-20 year long life expectancy
  • Hysteresis-free action, stainless steel build

Showing 1 to 6 of 10 results

Frequently Asked Questions

How do I increase the pressure on a pressure regulator?

On MicroAir manual units, turn the 30-turn fine-adjustment knob clockwise to increase output pressure. On PLC-controlled MicroAir IV units, raise the 0–10V analog input signal proportionally to your target pressure range. Always ensure your factory supply air is regulated to the recommended 45–55 psi input before making output adjustments to maintain accuracy and stability.

How to improve extrusion process?

What pressure ranges are available for MicroAir regulators?

Can MicroAir regulators interface with a PLC or automation system?

What is the response time of MicroAir IV pressure regulators?

How many channels do I need for my tubing extrusion application?

What warranty and support come with On Line Controls products?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Medical Device Manufacturing

Medical Device Manufacturing

Precise ultra-low air pressure control for catheter, multi-lumen, and medical tubing extrusion to tight OD tolerances.

Automotive Components

Automotive Components

Consistent air pressure regulation for automotive tubing extrusion, ensuring dimensional accuracy and repeatable production quality.

Plastic Profile Extrusion

Plastic Profile Extrusion

Stable, hysteresis-free pressure control for plastic profile and straw extrusion lines requiring precise internal air support.

OEM Extruder Manufacturers

OEM Extruder Manufacturers

MicroAir regulators are integrated by leading OEM extruder builders including Davis-Standard, Conair, and Gimac for turnkey lines.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

You might also like

Why Plastic Tubing Manufacturers Choose On Line Controls, Inc.

44+ Years of Extrusion Expertise

Founded in 1980 and focused exclusively on plastic tubing extrusion controls, OLC brings unmatched application knowledge to every pressure regulator solution.

Unmatched Precision & Long Lifespan

MicroAir regulators deliver hysteresis-free, sub-0.1-second response with accuracy to ±0.1% of full scale and a proven 10–20+ year service life requiring no calibration.

3-Year Warranty & Unlimited Support

Every unit ships with a three-year warranty on parts and labor plus unlimited phone support — ensuring your extrusion line stays running with minimal downtime.

Ready to Upgrade Your Extrusion Line Pressure Regulator?

Submit your inquiry and an OLC specialist will respond with product recommendations and pricing tailored to your extrusion application.

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.