Engineered for MAN commercial vehicles with air-assisted steering systems, the 81521856065 Servo Valve utilizes
low-friction spool design for pressure-sensitive modulation.
Features triple-seal protection against road contaminants in heavy-duty environments.

The temperature-compensated mechanism maintains consistent flow rates
across (-40°C to +120°C) operational range. Electropneumatic interface
ensures millisecond-level response during emergency maneuvers.

Engineering Parameters

Validated with MAN hydro-pneumatic systems
using ZF 8098 steering gears and Knorr-Bremse actuators.
Maintains pressure balance in
multi-axle configurations.
Compatible with third-party sensors
via ISO 7638 connectors.