IPF Rev0204
10
Nozzle Test
Attach a hose to the inlet of the flow tube and the nozzle to be tested on the
discharge of the flow tube. The nozzle may be either a smooth bore type or automatic.
Flow the nozzle at various pressures and note the flow and pressure displayed on the
readout. This test will provide a vivid depiction of the nozzle pressure/flow relationship.
Training
Use the
Portable Flow Tester
in training sessions to show firemen the effects of
pressure and flow on hose handling, reach of stream, the effects of kinked hose, etc. as
pumper pressure and nozzle sizes are changed.
Install the flow tube in the line behind the nozzle, preferably not directly on to the
discharge port of the pumper. Both the nozzleman and the pump operator vary their
valves. It is now possible to monitor the flow and thus determine the optimum flow
for various situations. This will be a graphic presentation of interaction of pressure,
flow, and nozzles. It will also demonstrate the desirability of Fire Research Flow and
Pressure Testers, which have been specifically designed for the fire industry, particularly
in the case where automatic nozzles are used.
Calibrate a Vehicle Mounted Flowmeter
1. Connect the portable flow tester flow tube to the pump suction port. (Refer to
Figure 2.)
2. Lay a 2 1/2" hose from the discharge to be tested to the flow tube making sure
there is no kink in the hose.
3. With the pump engaged open the discharge gate slowly all the way.
4. Control the flow with the suction port valve and by changing the RPM if
needed.
5. Read the displayed flow on the tester flowmeter.
Note
: Refer to the vehicle flowmeter manufacturer's instructions to determine
how to adjust the calibration of the vehicle mounted flowmeter.
6. Have an assistant calibrate the vehicle flowmeter to match the reading on the
tester flowmeter.
