Tractor protection valve

Details Tractor protection valve Tractor protection valve

G - Physics

05

D

137/101

G05D 7/00 (2006.01) B60T 11/32 (2006.01) B60T 15/02 (2006.01)

Patent

CA 1039149

ABSTRACT OF THE DISCLOSURE A tractor protection valve for use in the air brake system of a tractor-trailer vehicle combination to protect and maintain the braking system of the tractor includes a housing having tractor supply and control ports, trailer supply and control ports, and a pair of exhaust ports. The housing has a chamber with the exhaust ports being positioned at opposite ends of the chamber. First and second spring-biased pistons are axially movable in the chamber to control communication between the ports.

251877

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