
Relay Valve - FA4002B
A relay valve is a critical component in a vehicle's air brake system that controls the distribution of air pressure to the brakes. It amplifies the driver's input from the brake pedal, ensuring quick and efficient braking response. The relay valve helps maintain consistent braking performance, especially in heavy-duty vehicles, by reducing lag and improving overall safety.
RELAY VALVE:
A relay valve is an air-operated valve typically used in air brake systems to remotely control the brakes at the rear of a heavy truck or semi-trailer in a tractor-trailer combination. Relay valves are necessary in heavy trucks in order to speed-up rear-brake application and release, since air takes longer to travel to the rear of the vehicle than the front of the vehicle, where the front service brakes, foot-valve, parking-control valve, and trailer-supply valve (if applicable) are located.
Original Number:
- 973 001 020 0
PORT: 1=M22 2,4=M16
Part Number | FA4002B |
---|---|
Filter Type | filter_product_quality |
Manufacturer | Zhuji Weicheng |
Country of Manufacture | China |
Fragile | Yes |
Warranty | 12 Months |
Signs and symptoms when defective |
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Which automobile uses this part? | Trailer & Long vehicle |