Pump 9 Flashcards
($$$$$) are particularly advantageous when supplying hose lines or master stream devices with AUTOMATIC NOZZLES.
Flow meters
NFPA 1901 allows flow meters to be used instead of pressure gauges on all discharges ($$$$$$$) in diameter.
1 1/2 to 3 inches
The following two basic types of flow meters are used I the fire service.
Paddle wheel
Spring probe
When properly calibrated and in good working condition, flow meters shoul be accurate to a tolerance of ($$$$$$).
+- 3 %
Each discharge equipped with a flow meter has a digital readout display mounted within ($$$$) of the valve control for that discharge.
6 inches
If a firefighter communicates that water volume at the nozzle has diminished but there is no diction in the flow meter reading, it can be assumed that a ($$$$$$)
Hose has burst
The ($$$$$) formula has been developed for fire ground operations for which friction loss can be determined for 2 1/2, 3, 4, and 5 inch hose.
Condensed Q