Brake pipe vent valve for locomotive brake system

Details Brake pipe vent valve for locomotive brake system Brake pipe vent valve for locomotive brake system

B - Operations, Transporting

61

H

B61H 13/34 (2006.01) B60T 13/26 (2006.01) B60T 15/36 (2006.01) F16K 11/10 (2006.01)

Patent

CA 2639753

The present locomotive brake system includes a brake controller operable by an operator and a brake pipe vent valve. The brake controller includes an emergency output port which provides emergency pneumatic signal on the emergency output port when the brake controller is in an emergency position. The brake pipe vent valve includes a housing having brake pipe, emergency input and exhaust ports, and first and second valves. The emergency output port is fluidly connected to the emergency input port. The first valve selectively connects the brake pipe port to the exhaust port when opened in response to an emergency signal on the brake pipe port. The second valve selectively connects the brake pipe port to the exhaust port when opened in response to an emergency signal on the emergency input port.

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