CE Compliant certified

CE Compliant

Made in the U.S.A. certified

Made in the U.S.A.

Extrusion Pressure Regulator for FDA-Regulated Tubing

Extrusion pressure regulators from On Line Controls, Inc. are ultra-low air pressure control devices engineered for FDA-regulated plastic tubing extrusion. Available in single, dual, 3-channel, and 4-channel configurations with manual or PLC/0-10V control, they deliver precision diameter control for medical, catheter, multi-lumen, and automotive tubing applications.

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 OD gauge control
  • Dual-speed manual up/down buttons included
  • Hysteresis-free viscostatic damping action
Single Channel MicroAir IV

Single Channel MicroAir IV

  • 0-10V input with <0.1 sec response time
  • 3 modes: Dual State, Linear, Manual
  • +/-0.1% full-scale accuracy, 0-5 psi range
Dual Channel MicroAir II

Dual Channel MicroAir II

  • Dual-channel contact closure + manual control
  • Hysteresis-free stable regulating action
  • Air Up/Down input from diameter gauges
Dual Channel MicroAir I

Dual Channel MicroAir I

  • Dual-channel 30-turn knob manual control
  • Hysteresis-free, constant pressure at any flow
  • Stainless steel enclosure, 0-5 psi range
Dual Channel MicroAir IV

Dual Channel MicroAir IV

  • Dual-channel 0-10V/PLC input control
  • Sub-0.1 sec response for bump/taper tubing
  • Viscostatic damping, hysteresis-free output
Single Channel MicroAir I

Single Channel MicroAir I

  • Regulates below 1" of water precisely
  • 30-turn knob, hysteresis-free set point
  • 10-20 year life, stainless steel enclosure

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Frequently Asked Questions

What pressure ranges are available for the MicroAir extrusion regulators?

MicroAir regulators are available in pressure ranges from as low as 0-2 inches of water up to 0-5 psi. Extended range options include 0-5, 0-10, 0-15, and 0-30 inches of water on select models. Each unit can be configured with the specific range required for your tubing extrusion process.

What control input options are available for these pressure regulators?

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

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

Are MicroAir pressure regulators suitable for FDA-regulated medical tubing extrusion?

What is the expected lifespan of a MicroAir pressure regulator?

Do MicroAir regulators 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 Device & Catheter Manufacturing

Medical Device & Catheter Manufacturing

Precision air pressure control for FDA-regulated catheter and medical tubing extrusion requiring tight OD tolerances.

Plastic Tubing Extrusion

Plastic Tubing Extrusion

Ultra-low pressure regulators maintaining stable internal air support during free extrusion of plastic profile and tube.

Automotive Tubing Production

Automotive Tubing Production

Reliable multi-channel pressure regulation for automotive fuel, coolant, and fluid tubing extrusion processes.

Multi-Lumen & Specialty Tubing

Multi-Lumen & Specialty Tubing

Independent per-channel pressure control for complex multi-lumen, bump, taper, and micro-tube extrusion applications.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Why Medical & Plastic Tubing Manufacturers Choose On Line Controls, Inc.

Industry-Leading Precision & Stability

Ultra-low pressure regulation down to below 1 inch of water with hysteresis-free, viscostatic damping for consistent, repeatable tubing diameter control.

44+ Years of Manufacturing Expertise

Founded in 1980 and recognized as the industry standard for air pressure regulators, with products trusted by top OEM extruder manufacturers worldwide.

3-Year Warranty & Unlimited Support

Every MicroAir unit ships with a full 3-year parts and labor warranty plus unlimited phone support and range change service — no calibration required.

Get a Quote for Your Tubing Extrusion Application

Submit your requirements and our team will respond with product recommendations, technical guidance, 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.