Pneumatic relay valve adopts air pilot control principle, amplifies small pilot air signal and outputs large-volume compressed air to brake chambers, shortens brake response time and improves the stability of trailer braking action.

Model: 973-0-01-0180 Brand: Wabco Medium: Compressed air Working pressure: 8.5bar Max pressure: 10bar Interface: M16 thread ports Mounting: Bracket installation Protection: Anti-corrosion housing Certification: CE

Piston assembly, inlet / outlet valve spool, spring group, air flow channel, exhaust port and sealing rubber ring. Common faults: internal seal aging, air leakage, brake slow response, exhaust failure.

973-0-01-0 relay valve, Wabco trailer pneumatic brake spare widely used for heavy truck, semi-trailer air brake control system.