WABCO part description

RELAY INVERSION VALVE *D

WABCO Inversion Relay Valve

Enjoy optimal spring brake performance and efficient air management with the top-of-the-line WABCO Inversion Relay Valve. This component incorporates a pressure inversion function, allowing compressed air from the trailer's reservoir to be delivered to the spring brakes when the parking brake is applied. This functionality ensures the spring brakes are set with consistent pressure, even when the primary air system pressure may be depleted. Built to deliver exceptional durability and reliable performance, the WABCO 971-899-120-0 ensures consistent spring brake application, reliable parking brake engagement, and improved air management within the trailer system.

Features & Benefits

  • Allows for effective spring brake engagement even with depleted primary air system pressure
  • Ensures reliable parking and emergency braking by delivering consistent air pressure to the spring brakes
  • Durable and corrosion-resistant construction withstands harsh road conditions and ensures long service life
  • Optimizes air distribution within the trailer's air brake system for efficient operation
  • Essential component for trailer braking, directing air pressure for spring brake actuation
  • Offers peace of mind by ensuring reliable trailer parking and emergency braking functionality.

Whether it’s for cars, buses, trucks, or trailers, WABCO® is at the frontline at developing and providing products and systems to make vehicles safer and easier to control. Founded in 1869, WABCO is a major supplier of braking, stability, suspension and transmissions in the Americas and beyond. The company is recognized as introducing the modern air brake system in 1869, and continues to lead the industry in air brake design and production for the heavy duty and commercial vehicle sectors. Today, WABCO operates as a division of the German auto parts maker ZF and employs 16,000 employees in facilities in 36 countries worldwide.

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