Raise and Lower valves are used in air suspension systems to adjust the chassis height during loading operation. Versions with RtR (Reset to Ride Height) can reset the suspension to normal operation height by speed-related signals from ABS or EBS systems (usually at 15 kph). COLAS+ is the 2nd generation of the well-known COLAS product range.

COLAS Series

COLAS+ Series

reset to ride height
dead man function
releasable push to connect fittings
black plastic handle

This version includes the same features but offers additional:

a lock position in raise and / or lower position (called "RoRo" feature)
a test point for suspension pressure
blue instead of black handle