©Copyright Task Force Tips LLC 2020
8
LIN-070 September 29, 2020 Rev01
6.0 USE WITH FOAM
The nozzle may be used with foam solutions. Refer to fire service training by the Authority Having Jurisdiction (AHJ) for the proper use
of foam.
6.1 FOAM ASPIRATING ATTACHMENTS
Multi-expansion or low expansion aspirating attachments may be used with nozzles to increase the expansion ratio. These foam tubes
attach and detach quickly from the nozzle. As expansion ratio is increased, the reach of the nozzle will decrease due to the greater
amount of bubbles in the stream and their ability to penetrate the air. Generally, the straight stream 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. For specific
information, see LIA-025 (MANUAL: Foam Attachments for TFT Nozzles).
7.0 USE OF 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 fire. Among the most important is delivering water at a flow rate sufficient to absorb
heat faster than it is being generated. The flow rate depends largely on the pump discharge pressure and hose friction loss. It can be
calculated using a hydraulic equation such as:
8.0 COLOR CODED NOZZLE COMPONENTS
Working Fire nozzles are available with Black, Blue, Red, or Yellow handle covers, pistol grip, and tactile indicator at the time of order.
These field replaceable components are also available to departments wishing to change the color coding after order. Contact tft.com or
your dealer to order color coded components.
WARNING
For Class B fires, 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. Follow procedures established by the AHJ
for the specific fuel and conditions.
WARNING
Improper use of foam or using the wrong type of foam can result in illness, injury, or damage to the
environment. Follow foam manufacturer’s instructions and fire service training as directed by the
AHJ.
WARNING
Use of compressed air foam (CAF) with hand held nozzles can cause sudden surges in nozzle
reaction force resulting in risk of injury or death from loss of footing or hose whipping. Be prepared
for sudden changes in nozzle reaction caused by:
• Slug loading (Loss of foam concentrate sends slugs of air and water into the nozzle)
• Sudden release of built-up pressure in the hose when opening a nozzle
PDP = NP+FL+DL+EL
This Safety Manual is not intended as a substitute for proper
training in the use of rescue systems as taught from credible
sources such as the National Fire Protection Association
(NFPA), the International Fire Service Training Association
(IFSTA), or sources approved by the Authority Having
Jurisdiction (AHJ).
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
