Pressure protection valve

摘要

A pneumatic valve ( 10 ) for selectively controlling fluid flow through a pneumatic system of a vehicle is disclosed. The valve ( 10 ) includes a housing ( 12 ) having a cavity ( 28 ). The cavity includes an inlet ( 16 ) and an outlet ( 18 ). A flow controller ( 40 ) is disposed within the housing ( 12 ) for selectively controlling fluid flow through the housing ( 12 ). The flow controller ( 40 ) is actuatable to an open position, where the inlet ( 16 ) is in fluid communication with the cavity ( 28 ) and the outlet ( 18 ) is in fluid communication with a pneumatically operated device. The flow controller ( 40 ) is also actuatable to a closed position, where the flow controller ( 40 ) substantially impedes fluid from flowing through the housing ( 12 ). The flow controller ( 40 ) is actuatable between the open and closed positions in response to a predetermined fluid pressure within the pneumatic system.