Air Valve Block

The valve block controls direction of air flow. Air flow to and from air springs is controlled by 6 solenoid operated valves, one for each air spring, one inlet and one exhaust. Each air spring has a unique air pipe color code. See AIR PIPE COLOR CODES  . A diaphragm valve operated by solenoid outlet valve ensures that all exhausted air passes through air dryer. In response to signals by ECU, valves allow high pressure air to flow in or out of air springs according to need to increase or decrease pressure. The valve block is non-serviceable. In case of failure, it must be replaced.