Proportioning valves control the amount of pressure that the front and rear brakes receive during braking.

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Proportioning valves distribute the brake force between the front and rear brakes, which reduces the risk of wheel lock-up and improves stability during braking. This is usually done by reducing the pressure to the rear brakes to prevent them from locking up under heavy braking, while still providing enough force to slow down the vehicle.

Proportioning Valves Control the Amount of Pressure That the Front