Modulating valve for a brake pipe

Details Modulating valve for a brake pipe Modulating valve for a brake pipe

B - Operations, Transporting

60

T

303/46

B60T 17/00 (2006.01)

Patent

CA 1269126

ABSTRACT. MODULATING VALVE FOR A BRAKE PIPE A modulating valve in a brake control for a railway car has a sensor connected to a brake pipe port for sensing a service signal, a release signal and an emergency signal pressure and connects to an atmosphere port, a quick service volume, a bulb volume and a release reservoir. The quick service volume is filled from the brake pipe when a service signal is sensed with sequential venting of the bulb volume to atmosphere and refilling of the bulb volume from the brake pipe as a function of the magnitude of the service signal, and feeding fluid to the brake pipe from the release reservoir when a release signal is sensed.

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