81521026068 Compatible MAN Air Dryer Valve

What does an air dryer valve do?

This air dryer valve plays a critical role in the pneumatic brake system by removing moisture and contaminants from the compressed air stream. By preventing water accumulation, it protects downstream components from corrosion and prevents freezing in cold climates, ensuring consistent braking performance for heavy commercial vehicles.

Compatibility and technical specifications

This component is engineered for compatibility with MAN vehicles. It operates effectively within high-pressure environments, supporting up to 10 BAR to maintain stable air supply throughout the braking circuit.

Installation and maintenance guidance

The unit is equipped with a 24 V heater to prevent ice formation within the valve assembly. Technical specifications include M22x1,5 for Port 1 and Port 21, and an M12x1,5 connection for Port 22. When replacing this component, ensure all port connections are tightened to specification to prevent air leaks.

System reliability

To maintain optimal braking safety, technicians should regularly inspect the valve for signs of moisture buildup or pressure irregularities. Check the integrity of the electrical connections for the heater to ensure reliable operation during winter conditions. Consult your authorized distributor for further information.

OE cross-reference

301.02.0043 (Air Dryer Valve Air Dryer Valves) is the equivalent of the MAN OE number. This part directly replaces MAN OE number 81521026068.