1. Retractable Wheel  
2. Computer Control Unit.  
3. Keypad.    
4. Gas Nozzle.
5. Nozzle Boot.  
6. Pressure Gauge.    
7. Outlet Connector.  
8. Hose.
9. Breakaway Valve.  
10. Filter.      
11. Ex Junction Box.
12. Inlet Hole.  
13. Gas Separator.
14. Return Liquid Line.
15. Return Liquid Nozzle.
16. Ball Valve.
17. Ex Junction Box.  
18. Flow Meter.
19. Safety Return Valve.
20. Impulse Sensor.
21. Solenoid Valve.