The time-delay technology of the Type CR Valve reduces truck/tractor and trailer air consumptions and component wear. The controlled response time delay technology maintains chassis position and conserves air to increase compressor life. The robust die cast zinc body, precision machined steel and durable plastic components insure operation in extreme conditions. Minimum dead band range provides excellent control of suspension ride height to maintain drive system pinion angles. The optional integrated dump valve provides the ability to automatically or manually exhaust air from the suspension.