BENDIX CVS SR-7 Spring Brake Valve Part No: K021558

The Bendix CVS SR-7 Spring Brake Valve K021558 is engineered for dual air brake systems with spring brake actuators. During normal parking, it rapidly applies spring brakes using reservoir pressure. If a service circuit loses air, the SR-7 modulates spring brake application through the service brake valve to provide controlled stopping. Its anti-compounding design prevents service and spring forces from stacking, improving brake feel and reducing component stress. Built with standard SR-7 porting and two mounting studs, K021558 is a direct-fit replacement sold by Wofford Truck Parts for dependable heavy-duty parking and emergency brake control.