The 5-Port Solenoid valve with manual override is the standard valve used by the Proviso Plus P100A system. The valve is used to control the lift axle’s lift bags and ride bags at the same time, while making sure only one set of bags is pressurized at a time.
The manual override is used to lift the axle and hold it up. It is ideal for off road situations or when an issue with the system is causing the vehicle to be difficult to drive.
This version of the valve is made by Alkon Corporation.