Product Details: The Bendix BP-R1 Series Air Brake Pressure Proportioning Valve is designed to help improve overall brake performance and provide better stopping power and increased safety. This valve helps to provide a more comfortable and controlled driving experience, while also helping to prevent overheating and reduce the risk of brake fade. This valve is designed to help ensure that the brakes are operating at the optimal pressure for the best performance and safety. FleetPride is your First Click in Heavy Duty®.