CE Compliant certified

CE Compliant

Made in the U.S.A. certified

Made in the U.S.A.

MicroAir 3-Channel Pressure Regulator

The MicroAir 3-Channel Pressure Regulator line from On Line Controls, Inc. delivers ultra-low air pressure regulation for plastic tubing extrusion, medical catheter manufacturing, and automotive tubing. Available in manual, contact closure, and 0-10V PLC-controlled variants, each unit houses three independent channels in a stainless steel enclosure for precise multi-lumen tubing control.

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

Our Range of Products

MultiAir 3-channel MicroAir IV

MultiAir 3-channel MicroAir IV

  • 0-10V input for PLC or device control
  • Sub 0.1s response for bump/taper tubing
  • 3 channels in one stainless steel enclosure
MultiAir 3-channel MicroAir II

MultiAir 3-channel MicroAir II

  • Contact closure input from diameter gauges
  • Hysteresis-free OD regulating action
  • Each channel has independent range & display
MultiAir 3-channel MicroAir I

MultiAir 3-channel MicroAir I

  • Simple 30-turn knob for precise adjustment
  • 7 pressure ranges from 0-3" water to 0-5 psi
  • 3 independent channels for multi-lumen tubing

Frequently Asked Questions

How to size a pressure regulator?

To size a MicroAir 3-channel pressure regulator, identify your required pressure range (e.g., 0–3" of water, 0–5 psi), flow rate, and number of tubing lumens. OLC offers multiple pressure range options per channel, and each channel can be independently configured for different ranges to match your specific extrusion process requirements.

How does a pilot-operated regulator work?

What is the response time of the MicroAir IV regulator?

Can each channel have a different pressure range?

What control interfaces are available for the 3-channel MicroAir?

What power supply does the MicroAir regulator require?

Does the MicroAir regulator require calibration or regular 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

Delivers ultra-precise multi-channel air pressure control for catheter and medical-grade tubing extrusion lines.

Automotive Tubing

Automotive Tubing

Maintains consistent internal air pressure for dimensional accuracy during automotive tubing and profile extrusion.

Plastic Profile Extrusion

Plastic Profile Extrusion

Controls internal air support pressure across multiple channels for complex plastic profile and multi-lumen tubing production.

Multi-Lumen Tubing Production

Multi-Lumen Tubing Production

Three independent channels enable simultaneous, precise pressure regulation for each lumen in complex multi-lumen tube designs.

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.

44+ Years of Extrusion Expertise

Since 1980, OLC has been the recognized industry leader in ultra-low air pressure regulation for plastic tubing extrusion, serving 18 countries worldwide.

3-Year Warranty & Unlimited Support

Every MicroAir unit ships with a three-year warranty on parts and labor plus unlimited phone support, ensuring minimal production downtime.

No Calibration, 10–25 Year Lifespan

OLC regulators require no calibration and deliver hysteresis-free, stable operation for 10 to 25 years, reducing total cost of ownership significantly.

Get a Quote for Your 3-Channel MicroAir Regulator

Submit your requirements and our engineering team will respond with product recommendations and pricing 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.