ECAS Solenoid Valve 4728800010 WABCO Air Spring Height Control Unit for Heavy Truck

The ECAS Solenoid Valve 4728800010 is a WABCO air spring height control unit built for heavy trucks and trailers that use electronically controlled air suspension. Its modular integrated valve block keeps the assembly compact, saves installation room and cuts the number of air lines needed, which makes both assembly and later service simpler. The valve regulates the air inflow and outflow of the air springs to hold the chassis at the selected height.

The unit responds quickly to control commands and is sealed to IP6K10K, giving reliable waterproof and dustproof performance in severe conditions. A built-in silencer reduces exhaust noise, and system self-diagnosis helps technicians identify faults without lengthy manual testing.

• Compact Modular Block: The integrated valve block has a compact structure that saves installation space and reduces air pipeline connections.
• Precise Height Control: The valve quickly controls the air inflow and outflow of the air springs to adjust vehicle height automatically.
• IP6K10K Sealing: High pressure resistance with IP6K10K waterproof and dustproof protection keeps performance stable in severe conditions.
• Quieter Operation: A built-in silencer lowers the noise of exhaust air.
• Self-Diagnosis Support: The valve supports system self-diagnosis for quick, convenient maintenance.
• Heavy Truck Application: Designed for the air suspension systems of heavy-duty trucks and semi-trailers.

This ECAS solenoid valve is fitted to heavy trucks and semi-trailers with electronically controlled air suspension. Typical uses include long-haul tractor units, dump trucks, tankers and container trailers, where the driver needs to change chassis height for loading, unloading and coupling.

The valve also helps to keep the vehicle level when loads are uneven and to isolate the chassis from road shocks, which protects the cargo and improves ride comfort on long journeys.

Each ECAS solenoid valve is supplied in a neutral export carton with foam protection, with every unit bagged to keep the ports and connectors clean. OEM packaging and private labels can be provided, and the part number is shown on the carton label.

All valves are made to original equipment specification and inspected before shipment. A twelve-month warranty applies, and we welcome requests for samples, distributor pricing and container orders.