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FIREFIGHTING NOZZLES and FIRE HYDRAULICS

FIREFIGHTING NOZZLES and FIRE HYDRAULICS. presented by: Task Force Tips / KK Products. FIREFIGHTING NOZZLES and FIRE HYDRAULICS. An overview of basic nozzle design and the production of effective fire streams. Today’s Fire Service. Providing more diverse services Less personnel

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FIREFIGHTING NOZZLES and FIRE HYDRAULICS

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  1. FIREFIGHTING NOZZLES and FIRE HYDRAULICS presented by: Task Force Tips / KK Products

  2. FIREFIGHTING NOZZLES and FIRE HYDRAULICS An overview of basic nozzle design and the production of effective fire streams.

  3. Today’s Fire Service... • Providing more diverse services • Less personnel • Training demands increased • Fire streams training less frequent • Foam training considered costly • 10% of fires results in 90% of losses • Fire streams training is still needed

  4. Hand Held Stream Evolution Fixed & Selectable Flow Nozzles Automatic Nozzles Valve Design Fire Ground Hydraulics Nozzle Pressure Shaping the Fire Stream Fog Tooth Design Smooth Bore vs. Combination Fire vs. Water Flow Achieving Maximum Flows Nozzles & Foam Master Stream Nozzles FIREFIGHTING NOZZLES and FIRE HYDRAULICS

  5. A Fire Stream is... A stream of water orother water-basedextinguishing agent, after it leaves the nozzle until it reaches the desired target

  6. Hand Held Stream Evolution

  7. Hand Held Stream Evolution... 1700 - early 1800’s • Water moved from source to fire manually • No hose capabilities • No pumping capability and therefore no pressure

  8. Hand Held Stream Evolution... Early 1800’s • Hand pumps • Sewn leather or riveted hose • Very limited pressure capabilities • Appliances/nozzles of cast copper or brass

  9. Hand Held Stream Evolution... Late 1800’s • Cotton woven hose developed • More Power - The Age of Steam • Mechanical means for developing pressure not based on human power • Pressure now easily available

  10. Basic Water Moving Capabilities of the Fire Pumper Have Not Changedin 100 Years! 750-1000 GPM 150-200 PSI Pressure easily created Additional capacity has increased only as overall truck power has increased

  11. Hand Held Stream Evolution... 1900’s • Large variety of nozzles, playpipes and appliances made, all based on fixed “hole size” • Problem of coordination between pump operator and nozzle operator • Limited to only one correctflow, calculated by pump operator

  12. The purpose of any nozzle is to restrict flow to build pressure.This creates a usable velocity to project the water stream.

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