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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
20
Pressure Relief Valve
The Pressure Relief Valve is located on the Dry
Chemical Tank. The relief valve protects the tank and
low pressure line from extreme heat and is set at 212ø
Fñ 10ø F (100ø C ñ 5.5 C).
21
Heat Sensitive Relief Valve
The Heat Sensitive Relief Valve is located on the Dry
Chemical tank. The relief valve protects the tank and
low pressure line from extreme heat and is set at
212ø F ñ 10ø F (100ø C ± 5.5ø C).
22
Dual Agent Handline Control Handles
The Dual Agent Handline Control Handles operate
the hose reel handline nozzles. To operate the nozzles,
select agent or both agents as required and open
valves using the handles.
2-8
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