A control valve (10) for an automatic parking brake having an inlet (20) for coupling to a source a brake pipe pressure, an outlet (22) for coupling to a control inlet of the automatic parking brake and a pilot (24) for coupling to the source of brake pipe pressure. The control valve is moveable between a first position where the inlet is in communication with the outlet and a second position where the inlet and the outlet are isolated from each other in response to a predetermined amount of brake pipe pressure at the pilot. The control valve includes a spring biasing the control valve into the first position.
Control system for automatic parking brake of rail vehicle
2019-11-14
Patent
Electronic Resource
English
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