CE Compliant certified

CE Compliant

Inches-of-Water Pressure Regulator — Sub-PSI Control

Explore our advanced inches-of-water pressure regulators, engineered for ultra-low sub-PSI air control in precision plastic tubing extrusion. The MicroAir product line offers unmatched accuracy down to fractions of an inch of water column, with hysteresis-free operation and response times under 0.1 second. Available in manual, contact-closure, and 0-10V input configurations with single to 4-channel models for multi-lumen applications. Made in the USA with a 3-year warranty.

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

Our Range of Products

MultiAir 4-channel MicroAir IV

MultiAir 4-channel MicroAir IV

  • 4 independent channels
  • Multi-lumen tubing control
  • Programmable high-speed switching
MultiAir 3-channel MicroAir IV

MultiAir 3-channel MicroAir IV

  • 3 channels in single enclosure
  • Ultra-low pressure capability
  • Stainless steel construction
Single Channel MicroAir IV

Single Channel MicroAir IV

  • Three operational modes
  • Voice-coil linear motor
  • Instantaneous flow response
Dual Channel MicroAir IV

Dual Channel MicroAir IV

  • Dual channel configuration
  • Hysteresis-free operation
  • 0-3" to 0-5 psi range
MicroAir IV

MicroAir IV

  • 0-10V input for PLC control
  • Response time <0.1 second
  • Made in USA with warranty
MultiAir 3-channel MicroAir II

MultiAir 3-channel MicroAir II

  • Contact closure inputs
  • 3 independent channels
  • Diameter gauge compatible

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Frequently Asked Questions

How to size a pressure regulator?

Select based on your required pressure range (0-3" water to 0-5 psi), flow rate (SCFH), control method (manual/automatic), and number of channels needed for multi-lumen applications. Contact our technical team for application-specific sizing.

What do inches of water column mean?

Are there different size regulators?

What response time can I expect from these regulators?

Can these regulators integrate with my existing PLC system?

What maintenance do these pressure regulators require?

What warranty and support comes with these 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 diameter control for catheter and medical tubing extrusion with sub-PSI accuracy ensuring consistent wall thickness and lumen sizing for critical healthcare applications.

Automotive Components

Automotive Components

Reliable air pressure regulation for automotive tubing production including fuel lines, brake lines, and fluid transfer systems requiring tight dimensional tolerances.

Plastic Extrusion

Plastic Extrusion

Ultra-low pressure control for bump, taper, and multi-lumen tubing applications enabling precision sizing of extruded profiles with hysteresis-free operation.

Industrial Manufacturing

Industrial Manufacturing

Dependable pressure regulation for various plastic profile and tubing production requiring consistent dimensional control across varying production speeds and flow rates.

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.

Unmatched Precision & Accuracy

Our MicroAir regulators deliver industry-leading accuracy to ±0.1% of full scale with hysteresis-free operation, ensuring consistent tubing quality and minimal waste in your extrusion process.

Proven Durability & Reliability

Built in the USA with a 10-20 year lifespan, our pressure regulators require minimal maintenance and come with a comprehensive 3-year warranty and unlimited phone support.

Rapid Response Technology

High-speed switching models respond in under 0.1 second, enabling precise bump and taper control while maintaining stable pressure across varying flow rates from zero to maximum SCFH.

Request a Quote for Custom Pressure Regulation Solutions

Connect with our engineering team to discuss your specific tubing extrusion requirements. We'll help you select the right pressure regulator configuration and provide expert technical guidance.

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