The 0821300300 is used in pneumatic air-preparation systems to clean incoming compressed air and hold outlet pressure at a stable setpoint for downstream valves, cylinders, and tools. The regulator uses a diaphragm-type relieving pressure regulator with exchangeable filter element, which helps maintain consistent air quality and pressure while venting excess pressure as needed. It is intended for compressed air and neutral gases, making it suitable for machine automation, tooling, and industrial pneumatic circuits.
The unit is designed for vertical mounting and can be assembled into block systems with other NL-series components. It has a polycarbonate reservoir without protective guard, a die-cast zinc housing, and a filter reservoir volume of 25 cm³, which makes it compact but durable for cabinet and machine-level installation. Typical operating limits include -10 °C to +60 °C ambient temperature and a nominal flow of 1650 l/min, which is adequate for many factory pneumatic distribution lines.
