MicroAir Regulator for Fuel Line Tubing Extrusion

The five primary steps of plastic tubing extrusion are: (1) material feeding into the extruder hopper, (2) melting and homogenizing the polymer in the barrel, (3) forming the tube through the extrusion die head, (4) internal air pressure sizing to control outside diameter in the free extrusion zone, and (5) cooling, measuring, and spooling the finished tubing.

MicroAir regulators are available in multiple pressure ranges to suit diverse tubing applications. Options include ultra-low ranges starting at 0–3 inches of water, extending through 0–5, 0–10, 0–15, and 0–30 inches of water, up to 0–3 psi and 0–5 psi. Each unit connects to standard factory air regulated down to 45–65 psi supply.

MicroAir I offers manual control via a 30-turn precision knob — ideal for stable, set-and-hold applications. MicroAir II adds contact closure inputs from diameter gauges or controllers for semi-automatic adjustment. MicroAir IV features a high-speed voice-coil motor with 0–10V analog or PLC input, delivering sub-0.1 second response — essential for bump and taper tubing applications.

Yes. OLC offers MultiAir 3-channel and 4-channel MicroAir configurations specifically designed for multi-lumen tubing. Each channel operates independently with its own pressure range, digital display, and output option, allowing precise, simultaneous control of air pressure in each lumen for consistent geometry and dimensional accuracy throughout production.

MicroAir IV models accept 0–10V analog input, making them fully compatible with PLCs and other external control devices. This enables automated pressure profiling, high-speed switching for bump and taper tubing, and integration into closed-loop extrusion control systems — without requiring additional signal conditioning equipment.

All MicroAir units include a three-year warranty covering parts and labor, with unlimited phone support for the life of the product. OLC also offers range change services — free within 30 days of purchase on select models — and comprehensive technical documentation. Products ship worldwide via UPS, DHL, or FedEx from Shrewsbury, Massachusetts.