Air brake emergency control valve

Details Air brake emergency control valve Air brake emergency control valve

B - Operations, Transporting

60

T

B60T 15/50 (2006.01) B60T 13/26 (2006.01)

Patent

CA 2091831

AIR BRAKE EMERGENCY CONTROL VALVE ABSTRACT OF THE DISCLOSURE Control valve assemblies for regulating the parking/emergency spring brakes of a tractor trailer air brake system which include valve components for insuring that the spring brakes are not released until pressurization of the system's service reservoir is achieved and which components are operable to exhaust the spring brakes to atmosphere upon the failure of the supply pressures within the system to thereby automatically apply the spring brakes. In one embodiment, the valve components permit pressure to be supplied to release the spring brakes under circumstances when it is not possible to pressurize the service reservoir.

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