Sub-PSI Air Pressure Regulator for Plastic Extrusion

MicroAir I uses a manual 30-turn knob for set-point adjustment with standard response (~2 minutes to full scale). MicroAir II adds contact closure inputs (Air Up / Air Down) from a diameter gauge or PLC for automated control. MicroAir IV uses a 0–10V analog input with a precision voice-coil linear motor, delivering high-speed response of less than 0.1 second — ideal for bump and taper tubing or PLC-integrated lines.

Each lumen in a multi-lumen tube requires independent pressure control. OLC offers dual-channel, 3-channel, and 4-channel MicroAir units. For example, the MultiAir 4-channel MicroAir IV controls four separate lumens simultaneously, each with its own pressure range, digital display, and output option — all housed in a single stainless steel enclosure.

Yes. MicroAir IV models accept a standard 0–10V analog input, making them fully compatible with PLCs and other control devices. They support three operational modes: Dual State mode for high-speed switching, Linear mode for proportional control, and Manual Setting mode. This enables seamless integration into automated extrusion lines for bump and taper tubing or continuous diameter control.

MicroAir IV regulators respond in less than 0.1 second — typically around 20 milliseconds for a 50% full-scale step. This high-speed response is achieved by a precision voice-coil linear motor with viscostatic damping, ensuring instantaneous reaction to changes in flow rate while maintaining set pressure stability without hysteresis.

Yes. All MicroAir models are specifically engineered for medical-grade tubing extrusion, including catheter tubing and multi-lumen tubing. Their hysteresis-free regulating action and ultra-low pressure capability — down to below 1 inch of water — make them ideal for achieving the tight outside diameter tolerances required in medical device manufacturing. All units are CE compliant for international shipping.

All MicroAir regulators include a 3-year warranty covering parts and labor, along with unlimited phone support. On Line Controls also offers a free range change service within 30 days of purchase. With a product lifespan of 10–25 years and no calibration required, total cost of ownership is significantly lower than alternative pressure control solutions.