Bendix Brakes 800627 Air Brake Relay Valve - R-12DC

The Bendix 800627 R-12DC air brake relay valve is a critical component designed to enhance the performance, reliability, and safety of commercial vehicle air brake systems. This relay valve functions as a relay station that significantly speeds up the application and release of service brakes on medium and heavy-duty trucks, tractors, trailers, and buses.

Key Features:

• R-12DC model with biased double-check valve design for redundant brake control
• Accepts dual service signals from primary and secondary brake circuits for enhanced safety
• Designed for either reservoir mounting or remote frame mounting with stud mount configuration
• Operating temperature range from -40°F to 200°F for reliable performance in extreme conditions
• Serviceable inlet/exhaust valve can be replaced without removing air lines
• Engineered with non-metallic internal components for durability and reduced wear
• Designed and tested to meet or exceed federal safety regulations and OEM specifications

Under normal operation, the internal biased double-check valve ensures that the primary service signal controls the valve. If the primary circuit fails, the secondary service signal automatically takes over to maintain braking capability. Air pressure from the service reservoir is quickly delivered to the brake chambers through the relay action, reducing brake lag common in long-distance pneumatic systems. Manufactured by Bendix Commercial Vehicle Systems, a member of the Knorr-Bremse Group, this valve meets the highest industry standards for commercial vehicle air brake components.