MicroAir IV Sales
Purchase MicroAir IV regulators with 0-10V input for PLC integration, high-speed switching, bump and taper tubing, and precise ultra-low pressure control in extrusion lines.
Control ultra-low air pressure with fast, PLC-compatible 0-10V input designed for bump and taper tubing, medical tubing, catheter lines, automotive tubing, and other precision extrusion applications. Manufactured in the USA by On Line Controls, Inc., MicroAir IV delivers stable, hysteresis-free pressure response, long service life, and dependable support for demanding production environments worldwide.

Purpose-built MicroAir IV solutions for precision extrusion control, support, configurations, and long-term reliability.
Purchase MicroAir IV regulators with 0-10V input for PLC integration, high-speed switching, bump and taper tubing, and precise ultra-low pressure control in extrusion lines.
Choose single, dual, 3-channel, or 4-channel MicroAir configurations to support multiple extrusion lines or complex tubing processes with consistent pressure control.
Get troubleshooting, installation guidance, maintenance advice, and unlimited phone support for MicroAir IV and related ultra-low pressure regulator applications.
MicroAir IV is built for manufacturers that need fast, stable pressure regulation during critical tubing processes. Its 0-10V input allows connection to PLCs or other equipment, making it ideal for high-speed switching, bump tubing, and taper tubing. With no calibration required, low maintenance demands, and USA manufacturing, it supports consistent outside diameter control and reliable production performance.

Work with the recognized industry leader in ultra-low air pressure regulators.
Controls pressure below 1 inch of water for demanding extrusion applications.
Manufactured at the Shrewsbury, Massachusetts facility for consistent product quality.
Designed for low maintenance and 10-20+ years of reliable operation.
Unlimited phone support and decades of extrusion control experience guide every purchase.
Experienced leadership behind MicroAir precision control.

President
Kay DeWolfe serves as both owner and President of On Line Controls, Inc., bringing over 35 years of invaluable experience to the industrial pressure control industry. Under her leadership, the company has maintained its position as the recognized industry leader in ultra-low air pressure regulators for plastic tubing extrusion. Kay's extensive background in precision manufacturing and customer support has been instrumental in expanding OLC's global reach to serve customers across 18 countries while maintaining the highest quality standards. Her commitment to engineering excellence and customer satisfaction continues to drive the company's innovation in pressure control technology, ensuring that OLC's MicroAir and motorized potentiometer products remain the industry standard for precision and reliability.
MicroAir IV is an ultra-low air pressure regulator used for internal air support during free extrusion of plastic tubing and profiles. It helps manufacturers maintain precise tubing outside diameter and stable process conditions. Common applications include medical tubing, catheter tubing, plastic straws, automotive tubing, and extrusion lines requiring fast pressure changes.
Talk with OLC for application guidance and product details.
Supports international product shipping requirements.
Recognized for extrusion industry expertise.
Built domestically for reliable quality control.
Share your extrusion application, pressure range, channel needs, and PLC requirements. The OLC team will help you identify the right MicroAir IV configuration and next steps.
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.
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.