MicroAir Regulator for Catheter Tubing Extrusion

An air pressure regulator reduces high-pressure factory air to a precise, stable lower output pressure. In MicroAir regulators, this is achieved by balancing against a low-tension spring and venting surplus air, with viscostatic damping fluid eliminating pressure oscillation. The result is a steady, hysteresis-free output pressure regardless of varying downstream flow rates.

MicroAir regulators are available in a wide range of ultra-low pressures, from 0–2 inches of water up to 0–5 psi. Specific ranges include 0–3", 0–5", 0–10", 0–15", and 0–30" of water, as well as 0–3 psi and 0–5 psi. A Range Change Kit or service is also available to adjust the range after purchase.

MicroAir I models use manual 30-turn knob control. MicroAir II models add contact closure input compatibility for integration with O.D. gauges or external controllers. MicroAir IV models feature a high-speed voice-coil motor with 0–10V analog or PLC input, achieving response times under 0.1 second — ideal for bump and taper tubing applications.

Yes. OLC offers 3-channel and 4-channel MultiAir configurations specifically designed for multi-lumen tubing. Each channel independently controls air pressure for a separate lumen, and each can be configured with a different pressure range and its own digital display and output option, ensuring precise dimensional control of complex tubing geometries.

No. MicroAir regulators are designed for zero-calibration operation. Viscostatic damping fluid provides inherently stable, hysteresis-free regulation. The units maintain accurate set-point pressure across varying flow rates without requiring periodic recalibration, significantly reducing maintenance burden on the production floor.

MicroAir regulators are manufactured in Shrewsbury, Massachusetts, USA. All units are CE compliant for international shipping and are shipped worldwide via UPS, DHL, or FedEx. On Line Controls currently serves customers in 18 countries including Germany, Japan, China, Canada, France, Ireland, India, and more.