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Published byAnna Garnett
Modified over 2 years ago
Compressed Air Foam Systems (CAFS)
124 Air Metering Valves Check Valve Water Valve Compressed Air Water Pump Foam Tank Water Tank Pressure Gauges Screw Air Compressor Foam Proportioner Compressed Air Foam System
125 CAFS Components Water pump Compressor Proportioner
126 Complete Systems Fire pump manufacturers offer full CAFS packages. Components are assembled, tested and calibrated as a complete system. Darley AutoCAFS
127 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 Compressed Air Foam Systems
128 CAFS Is A Versatile Tool Limited only by the users imagination –Think outside of the box –Be progressive –Be safe
129 Nozzles For CAFS Straight bore – CAFS bubble Variable pattern nozzle – foam solution
130 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
131 Small strong uniform bubbles Greater foam durability Low expansion system User can easily adjust –Expansion ratio –Drain time –Foam type CAFS Characteristics
132 Light weight hose –Less strain on firefighters Effect on hose –No water hammer –Reduced friction loss Hose kinks –Effective hose stream with kink CAFS Safety Characteristics
133 High volume air compressor –Air tools –Air bags –Tires –Drain hose Additional CAFS Benefits
134 Aerial CAFS Discharge
135 Thinking outside the box Bumper Turret CAFS Discharge
136 CAFS 5" Handline Way outside the box
137 Concentrate Delivery Systems Many different levels of technology are used to deliver todays water additives Fully understand the capabilities and limitations of each before deciding on a system
Nozzle Pressure. Designed Nozzle Pressures Smooth Bore Nozzle - Handline 50 PSI Smooth Bore Nozzle - Master Stream 80 PSI Combination Nozzle - (all.
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Discharging CAF Streams In reality anything that will let the stuff out of the end of the hose will work. The early mantra was that a shut off gate and.
CAFS On-Line Orientation Montgomery County Fire & Rescue Service Making CAFS.
Proportioning Systems. 69 Proportioning Systems Now you know the benefits and uses of water additives, especially Class A foam. So how do we get the concentrate.
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CAFS On-Line Orientation Montgomery County Fire & Rescue Service Class A Foam Theory.
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Chapter 11 Nozzles, Fire Streams, and Foam. Introduction Fires usually extinguished by water Foam added to improve water’s extinguishment ability –For.
Master Streams. Master Stream Training Available... Awareness and Operations Training Portable Monitors Offensive Strategies Defensive Strategies.
Pump Theory Darley & Co. Serving the World Fire Industry for more than 95 years.
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CONTENTS What is an air brake system? Components of air brake system. Working of Air brake system Brake assembly Advantages Limitations
$200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 Tip SizesNozzlesPotpourriFormulas.
Smooth Bore Nozzles vs. Combination Nozzles How is a fire stream best formed?
Fire Streams Module II & III. Fire Hydraulics Deal with properties of energy, pressure, and water flow as related to fire suppression.
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11 Foam. 11 Knowledge Objectives (1 of 2) Describe how foam works. Describe the foam tetrahedron. Describe foam characteristics. Describe the different.
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