Empty-load valve device

Details Empty-load valve device Empty-load valve device

B - Operations, Transporting

60

T

303/20

B60T 8/22 (2006.01) B60T 8/18 (2006.01)

Patent

CA 1320990

ABSTRACT An empty-load valve device has a single housing competing coaxially a load sensing push rod, a load sensing piston, a ratio piston, a ratio valve and a spring for retracting the push rod to a normal position. The load sensing push rod actuates the ratio piston to open an equalizing valve to fill an equalizing volume from a control valve and to permit the ratio piston to limit brake cylinder pressure upon sensing an empty car.

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