1. Compressor
2. Supply, Primary and Secondary Air Tanks
3. Low Pressure Indicator Switch
4. Safety Valve
5. Drain Valves (Manual & Automatic)
6. Governor
7. Single Check Valve
8. Pressure Control Check Valve
9. Air Gauge
10. Dual System Foot Brake Valve
11. Quick Release Valve
12. Service Brake Chamber
13. Slack Adjuster
14. Relay Valve
15. Spring Parking Brake
16. Quick Release and Double Check Valve Combination
17. Stop Light Switch
18A. Inversion Relay Valve
18B. Spring Brake Control Valve
19. Air Dryer
20. ABS Electronic Control Unit, Modulator Valves, Sensors and Tooth Rings
20A. Front Axle Valve Package
20B. Rear Axle Valve Package
21. Two-Line Tractor Protection Valve (Non-Automatic Type)
22. Hand Control Valve - Trailer Service Brakes
23. Double Check Valve
24. Double Check Valve
25. Manifold Dash Valve
1. Compressor
2. Supply, Primary and Secondary Air Tanks
3. Low Pressure Indicator Switch
4. Safety Valve
5. Drain Valves (Manual & Automatic)
6. Governor
7. Single Check Valve
8. Pressure Control Check Valve
9. Air Gauge
10. Dual System Foot Brake Valve
11. Quick Release Valve
12. Service Brake Chamber
13. Slack Adjuster
14. Relay Valve
15. Spring Parking Brake
16. Quick Release and Double Check Valve Combination
17. Stop Light Switch
18A Inversion Relay Valve
18B. Spring Brake Control Valve
19. Air Dryer
20. ABS Electronic Control Unit, Modular Valves, Sensor and Tooth Rings
20A. Front Axle Valve Package
20B. Rear Axle Valve Package