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Compressed Air Foam Systems (CAFS) PowerPoint PPT Presentation


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Compressed Air Foam Systems (CAFS). Compressed Air Foam System. Air Metering Valves. Compressed Air. Screw Air Compressor. Gauges. Check Valve. Water Valve. Foam Tank. Pressure. Water Tank. Foam Proportioner. Water Pump. CAFS Components. Water pump. Compressor. Proportioner.

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Compressed Air Foam Systems (CAFS)

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Compressed Air Foam Systems (CAFS)


Compressed Air Foam System

Air Metering

Valves

Compressed Air

Screw

Air

Compressor

Gauges

Check Valve

Water Valve

Foam

Tank

Pressure

Water

Tank

Foam Proportioner

Water

Pump


CAFS Components

Water pump

Compressor

Proportioner


Complete Systems

  • Fire pump manufacturers offer full CAFS packages. Components are assembled, tested and calibrated as a complete system.

Darley “AutoCAFS”


Compressed Air Foam Systems

  • Capabilities

    • Superior absorption of heat

    • Quick knockdown

    • Light hose lines: (per 100’ length)

      • 1-1/2” Hose: Water - 103 lbs. CAFS - 35 lbs

      • 2-1/2” Hose: Water - 271 lbs. CAFS - 84 lbs

    • Extended stream reach

    • Ability to make wet or dry foam

  • Limitations

    • Tradition and knowledge base


CAFS Is A Versatile Tool

  • Limited only by the user’s imagination

    • Think outside of the box

    • Be progressive

    • Be safe


Nozzles For CAFS

  • Straight bore – CAFS bubble

  • Variable pattern nozzle – foam solution


CAFS Characteristics

  • High energy system

    • Can be pumped higher and further than water at same psi due to lack of head pressure

  • Lower foam concentrate % required

    • 0.2% - 0.3% vs. 0.5%


CAFS Characteristics

  • Small strong uniform bubbles

  • Greater foam durability

  • Low expansion system

  • User can easily adjust

    • Expansion ratio

    • Drain time

    • Foam type


CAFS Safety Characteristics

  • Light weight hose

    • Less strain on firefighters

  • Effect on hose

    • No water hammer

    • Reduced friction loss

  • Hose kinks

    • Effective hose stream with kink


Additional CAFS Benefits

  • High volume air compressor

    • Air tools

    • Air bags

    • Tires

    • Drain hose


Aerial CAFS Discharge


Bumper Turret CAFS Discharge

Thinking outside the box


CAFS 5" Handline

Way outside the box


Concentrate Delivery Systems

  • Many different levels of technology are used to deliver today’s water additives

  • Fully understand the capabilities and limitations of each before deciding on a system


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