YUTONG TRUCKS : 350600173

5 kg Cross References MERCEDES BENZ : 0022604657

WABCO : 4231091020

RENAULT : 5010260496

EBS 23.01.6208 RELAY VALVE ( 9730112080 ) Aviation Spanners YUTONG TRUCKS : 350600173On some trucks & trailers, the distance from the brake chambers to the foot valve is too far to cause immediate application of the brake when the foot valve is depressed. This is called brake lag. To correct this situation, a relay valve is installed near the rear brake chambers. A large diameter pipe is connected between the service reservoir and relay valve. The air line from the foot valve to the relay valve now becomes a control line that signals