
COLAS: Raise and lower valve
The COLAS® valve can be used to manually raise and lower the deck height of commercial vehicles and trailers. The COLAS® valve takes the place of current systems which require multiple components, fittings and plumbing. An optional automatic reset feature is available with the COLAS® valve. This feature prevents an operator from moving a vehicle while the valve is in use. The COLAS® valve will reset and allow normal operation of the air suspension system.

Key benefits
- High air flow for quick response
- Dead man´s function
- RoRo-function (Roll-on, Roll-off)
- RtR-function (automatic reset to ride height)
- Optional integration of test point (ISO 3583)
- Application in conjunction with both ABS & EBS.

Variants
- DIN Bayonet connection, flat contact, without solenoid
- Dual and Single circuit applications
- Optional integration of test point (ISO 3583).

Product catalogue
Quick and easy access to the full range of Haldex products. Each part number shows the product’s technical specification, price and picture.

Technical Documentation
Our extensive database of technical documentation contains all relevant information on our products.