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TM5-4210-229-14&P
Table 2-1. Twin Agent System Controls and Indicators (Continued).
Twin Agent 4x4 Firefighting Truck
(Refer to Figure 2-1)
Key
Control or Indicator
Function
15
AFFF Tank Fill Cap
The AFFF Tank Fill Cap is a threaded pressure lug
cap that seals the fill opening.
16 & 17
Purge Valves
The Purge Valves are located on the Dry Chemical
and AFFF Tanks. When opened, they purge the agent
lines and bleed any trapped pressure out of the
respective tank.
The purge valves are in the CLOSED position during normal
operating conditions.
18
Bleed Valve
The Bleed Valve is located on the Dry Chemical
Tank. When opened, it allows the Dry Chemical Tank
to depressurize.
The bleed valve are in the CLOSED position during normal
operating conditions.
19
Dry Chemical Tank Fill Cap
The Dry Chemical Tank Fill Cap is a threaded
pressure lug cap that seals the fill opening.
2-7
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