LTT-104

LTT-104
PROCEDURE: How to Test Proper
Function of an Automatic Nozzle
Aside from routine cleaning, inspection and
lubrication that is recommended, agencies
often perform annual flow/pressure test on their
nozzles. Care, Use and Service Testing of Fire
hose including couplings and nozzles is covered
in NFPA Standard # 1962. Performing a simple
annual flow/pressure test on your nozzles will
identify instances of damage that can have an
effect on overall performance. And of course also
help insure safe fire suppression operations.
NFPA Standard #1962
Section 6.1.2.
All nozzles shall be inspected after each use and at least annually.
Section 6.1.3.
The nozzle inspection shall verify the following:
1. The waterway is clear of obstructions.
2. There is no damage to the tip.
3. All controls and adjustments operate as designed.
4. The shut off valve, if so equipped, operates as designed and closes off the flow completely.
5. There are no missing or broken parts.
6. The thread gasket is in good condition in accordance with Section 6.3.
Section 6.1.4.
If the nozzle fails the inspection for any reason, it shall be removed from service, repaired and servicetested, or replaced.
SERVICE TEST AUTOMATIC HANDHELD NOZZLES:
To properly test an automatic nozzle, you must go to a pre-determined Pump Pressure
and then note base nozzle pressure. The set up is simple.
EQUIPMENT REQUIRED:
In-line pressure gage.
150 feet of your departments attack hose. Connect hose directly to side discharge.
Place the pressure gage at the base of the nozzle, this will be used to display base
nozzle pressure.
NOTE: Constant pressure spray nozzles shall maintain plus or minus 15 PSI of
the rated pressure throughout the rated flow range
Note:
1. Average nozzle pressure is 100 PSI.
2. The bail handle must be fully open.
Using the sample charts below, adjust pump discharge
pressure and record nozzle pressure.
SERIAL#
NOZZLE
PUMPER
PDP = PUMP DISCHARGE PRESSURE
PDP = 195
NOZZLE PRESSURE SHOULD BE 100 PSI
RECORD ACTUAL NP
TASK FORCE TIPS, INC.
MADE IN USA • www.tft.com
©Copyright Task Force Tips, Inc. 2010-2011
4.1.5 Constant pressure (automatic) spray nozzles
shall maintain their rated +/- bar (+/-15 psi) throughout
the rated discharge range when tested in accordance
with Section 6.1
PRESSURE
GAUGE
SAMPLE DATA CHART
HIGH FLOW
NFPA 1964 Section 4.1.5.
MEDIUM FLOW
PDP = 150
NOZZLE PRESSURE SHOULD BE 100 PSI
RECORD ACTUAL NP
LOW FLOW
PDP = 125
NOZZLE PRESSURE SHOULD BE 100 PSI
RECORD ACTUAL NP
3701 Innovation Way, Valparaiso, IN 46383-9327 USA
800-348-2686 • 219-462-6161 • Fax 219-464-7155
LTT-104 June 13, 2011 Rev01
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