©Copyright Task Force Tips, Inc. 2002 - 2010
LKB-100 January 18, 2009 Rev9
9
6.0 USE WITH SALT WATER
Use with salt water is permissible provided nozzle is thoroughly cleaned with fresh water after each use. The service life of the
nozzle may be shortened due to the effects of corrosion and is not covered under warranty.
7.0 FOAMJET MX WITH TWISTER NOZZLE
To increase the expansion ratio Task Force Tips “Foamjet MX”
(model FJ-MX-D) may be used with the Twister nozzle. This
multi-expansion foam tube attaches and detaches quickly from
the nozzle. Note: As expansion ratio is increased, the reach of the
stream will be decreased due to the greater amount of bubbles
in the stream and their inability to penetrate the air. Generally,
the reach with foam is approximately 10 % less than with water
only. Actual results will vary based on brand of foam, hardness of
water, temperature, etc.
SERIAL # KKF-
XXXXXX
PA
TENT PENDING
TWISTER 1 INCH SERIES
MUL
TI-EXP
ANSION FO
AM ASPIRA
TING A
TT
ACHMENT
with Inse
F590D
FIG 4 - FJ-MX-D Shown on Twister Nozzle
WARNING
For Class B fi res, lack of foam or interruption in the foam stream can cause a break in the
foam blanket and greatly increase the risk of injury or death. Assure that:
Application rate is suffi cient (see NFPA 11 or foam manufacturer’s recommendations).
•
Enough concentrate is on hand to complete task (see NFPA for minimum duration time
•
requirements).
Foam logistics have been carefully planned. Allow for such things as:
•
Storage of foam in a location not exposed to the hazard it protects.
•
Personnel, equipment and technique to deliver foam at a rapid enough rate.
•
Removal of empty foam containers.
•
Keeping clear path to deliver foam as hoses, other equipment and vehicles are
•
deployed.
WARNING
Improper use of foam can result in injury or damage to the environment. Follow foam
manufacturer’s instructions and fi re service training to avoid:
Using wrong type of foam on a fi re, i.e. Class A foam on a Class B fi re.
•
Plunging foam into pools of burning liquid fuels.
•
Causing environmental damage.
•
Directing stream at personnel.
•
WARNING
There is a wide variety of foam concentrates. Each user is responsible for verifying that any
foam concentrate chosen to be used with this unit has been tested to assure that the foam
obtained is suitable for the purpose intended.
8.0 FIREGROUND USE OF TWISTER AND BUBBLE CUP NOZZLES
IT IS THE RESPONSIBILITY OF THE INDIVIDUAL FIRE DEPARTMENT OR AGENCY TO DETERMINE PHYSICAL CAPABILITIES
AND SUITABILITY FOR AN INDIVIDUAL’S USE OF THIS EQUIPMENT.
Many factors contribute to the extinguishment of a fi re. Among the most important is delivering water at a fl ow rate suffi cient to
absorb heat faster than is being generated. The fl ow rate depends largely on the pump discharge pressure and hose friction loss.
The pump discharge pressure may be found by use of the chart on the last page. It can also be calculated using a hydraulic equation
such as:
PDP = NP + FL + DL + EL
PDP
= Pump discharge pressure in PSI
NP
= Nozzle pressure in PSI
FL
= Hose friction loss in PSI
DL
= Device loss in PSI
EL
= Elevation loss in PSI
For additional information on calculating specifi c hose layouts, consult an
appropriate fi re service training manual, A Guide to Automatic Nozzles,
or call TFT’s “Hydraulics Hotline” at 800-348-2686.
