MicroAir 4-Channel Pressure Regulator

A standard pressure regulator reduces supply pressure to maintain a set downstream output pressure, while a backpressure regulator controls the pressure on its inlet side by relieving excess pressure. In plastic tubing extrusion, downstream reducing regulators like OLC's MicroAir are used to supply consistent internal air pressure, whereas backpressure regulators are more common in fluid and gas processing systems where upstream pressure must be held constant.

A dome-loaded regulator uses a pressurized gas dome above the main diaphragm as the reference signal instead of a mechanical spring. The dome pressure determines the set point, allowing remote or dynamic adjustment of output pressure. OLC's MicroAir regulators use a precision voice-coil linear motor rather than a dome-loaded design, achieving sub-0.1-second high-speed response and stable, hysteresis-free pressure control across ultra-low ranges.

The MultiAir 4-Channel MicroAir IV supports pressure ranges from 0–3 inches of water column up to 0–5 psi. Each of the four channels can be configured with a different pressure range to accommodate varying lumen sizes or process requirements in multi-lumen tubing and catheter extrusion applications.

The MicroAir 4-Channel regulator responds in less than 0.1 second, with a typical response of approximately 20 milliseconds for a 50% full-scale step change. This high-speed switching capability makes it ideal for bump and taper tubing applications where rapid, programmable pressure transitions are critical to maintaining dimensional accuracy.

Yes. Each of the four channels on the MultiAir MicroAir IV operates independently, with its own pressure range, digital display, and 0–10V analog or PLC output option. This allows manufacturers to precisely control internal air pressure for each individual lumen in multi-lumen catheter or tubing extrusion lines without cross-channel interference.

The MicroAir 4-Channel regulator accepts 0–10V analog input and is compatible with PLC control systems. Normal factory air regulated to 50–55 psi serves as the supply, and the unit operates on 110/220 VAC 50/60Hz dual-selectable voltage, making it suitable for both domestic U.S. installations and international production environments.