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Brake Valve (68)

Automotive brake valve can be divided into air brake valve and hydraulic brake valve. It is a critical component of the brake system.

A brake valve is composed of an upper chamber piston, a lower chamber piston, a pushrod, rollers, balance springs, upper valve, lower valve, an inlet, an outlet, an exhaust port and venthole. When driver's foot presses the pedal, the balance spring is pressed through stretching the pull rod. The balancing arm moves down, therewith the exhaust valve shuts, while the inlet valve opens. At this moment the pressed air flow into brake chamer through inlet valve, pushing the diaphragm thereby rotating the brake cam.

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