1. Air Pressure Gauge
2. Instrument Panel
3. Idle Warm-Up Valve
4. Inlet Valve
5. Air Filter
6. Regulator/Blowdown Valve Manifold
7. Minimum Pressure/Check Valve
8. Pressure Relief Valve
9. Fuid Fill/Fluid Level Sight Glass
10. Optional Discharge Air Filters
11. Optional Moisture Separator
12. Optional Aftercooler
13. Aftercooled Machines ONLY
14. Fluid Filter
15. Thermal Valve
16. Compressor Unit
17. Fluid Cooler
18. Air
19. Fluid/Air
20. Fluid
21. Strainer
Figure 2-4: Control System with Piping and Instrumentation—375 and 425 Models