MicroAir I — Manual Ultra Low Pressure Regulator

MicroAir I is the manual model in OLC’s MicroAir line of ultra-low air pressure regulators. It is designed for internal air support during free extrusion of plastic tubing, helping operators precisely control tubing outside diameter. It is especially useful where stable, low-pressure control is required without electronic input from PLCs or other external equipment.

During plastic tubing extrusion, small changes in internal air pressure can affect outside diameter. MicroAir I provides stable, hysteresis-free low-pressure regulation so operators can maintain consistent internal air support. This helps reduce variation caused by air-flow changes, cutting, spooling, and normal production adjustments, improving repeatability across medical, catheter, straw, and automotive tubing lines.

MicroAir units are available in very low pressure ranges starting below 1 inch of water, including ranges as low as 0–2 inches of water and up to 0–5 psi. The appropriate range depends on the tubing material, extrusion process, diameter target, and degree of pressure sensitivity required for stable production.

MicroAir I is suited for manufacturers that need manual ultra-low pressure control on plastic tubing extrusion lines. Common applications include medical tubing, catheter tubing, plastic straw production, automotive tubing, and OEM extrusion systems. It is ideal when operators want durable, precise pressure control without requiring electronic inputs or high-speed automated switching.

Yes. MicroAir purchases include unlimited phone support from On Line Controls, Inc. Support can help with installation questions, troubleshooting, maintenance guidance, and proper use on extrusion lines. The support team covers MicroAir I as well as MicroAir II, MicroAir IV, and multi-channel MicroAir configurations used in production environments.

Many MicroAir units can be serviced by OLC. Units less than 10 years old can usually be tested and repaired quickly after receipt, often in one day depending on the issue. Older units may be evaluated, but units with serial numbers lower than 7000 are not repairable because the internal body has typically worn out after decades of use.

Yes. MicroAir products are available in single channel, dual channel, three-channel, and four-channel configurations. Multi-channel units are useful when manufacturers need to manage several pressure-control points or extrusion lines with consistent MicroAir performance. OLC can help identify a suitable configuration based on your production setup and control requirements.

MicroAir units are sold directly by On Line Controls, Inc. and manufactured in the United States. Pricing is not listed as a standard online amount because configuration, range, and channel count can vary. Units can be shipped worldwide using carriers such as UPS, DHL, or FedEx, making them available to manufacturers across multiple countries.