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(888) 312-8812 Login SignupThe Williams Controls Ratio Relay Valve plays a critical role in maintaining balanced braking pressure between your truck's tractor and trailer. It is designed as a three-way, pilot-operated valve that automatically adjusts the trailer's air brake pressure based on the pressure applied by the driver. This intelligent proportioning ensures even braking force distribution, preventing premature wear on the trailer brakes and enhancing overall stopping performance. The Williams Controls 112201 valve's robust design and adjustable ratio feature guarantee reliable operation and easy customization for various trailer configurations, promoting safe and efficient braking on the road.
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