Use With Foam; Foam Aspirating Attachments - Task Force Tips Twister Instructions For Installation, Safe Operation And Maintenance

6.4 BUBBLECUP NOZZLES
The BubbleCup nozzle is capable of producing aspirated foam as well as a conventional straight stream and wide protective fog
pattern. The BubbleCup functions just like the BubbleFog nozzle when the aspirating sleeve is in the retracted position as in fi gure
A below.
To use the aspirating feature of the BubbleCup, the nozzle operator needs only slide the aspirating sleeve portion of the nozzle
forward as in fi gure B below. Rotation of the shaper when the sleeve is extended will provide the nozzle operator control of reach and
aspiration. If an immediate wide protective fog pattern is needed, the sleeve can be retracted instantly to its regular position

7.0 USE WITH FOAM

The nozzle may be used with foam solutions. Refer to fi re service training for the proper use of foam.
For Class B fi res, lack of foam or interruption in the foam stream can cause a break in the foam
WARNING
blanket and greatly increase the risk of injury or death.
Assure that:
Allow for such things as:
Improper use of foam can result in injury or damage to the environment. Follow foam
WARNING
manufacturer's instructions and fi re service training to avoid:
There are a wide variety of foam concentrates. Each user is responsible for verifying that any
WARNING
foam concentrate chosen to be used with this unit has been tested to assure that the foam
obtained is suitable for the purpose intended.
Use of compressed air foam (CAF) with hand held nozzles can cause sudden surges in nozzle
WARNING
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:

7.1 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 be decreased 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 specifi c information, see LIA-025 (MANUAL: Foam Attachments for TFT Nozzles).
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ASPIRATING
SLEEVE
A) Retracted Position
• 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.
• 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
• Clear path to deliver foam, as hoses and other equipment and vehicles are deploye
• 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
• 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
SHAPER
EXTENDED TO
WHITE LINE
B) Extended Position
8
LKB-100 August 2, 2018 Rev11