Master Streams - efdtraining.org

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Blitzfire
Deck Gun
Ground Monitor


Cooling (Absorbing the heat from a fire)
Smothering (Diluting or excluding Oxygen)

When heated to its
boiling point, Water
absorbs heat by
converting into the
gas phase called
water vapor or steam
(vaporization)

Latent heat of
Vaporization
◦ The energy required to
change a substance
from a liquid to a gas
phase.
◦ This is how water
absorbs heat from a
fire.
◦ Water uses the fire’s
heat energy to change
water into steam
Evaporation requires heat energy that comes from
the nearest available heat source. This heat
energy is known as the “latent heat of
vaporization,” and its removal cools the source it
comes from. An example is the cooling of your
body by evaporation of perspiration.
 Water
expands to 1,700 times its
original volume when converted
to steam at 212 degrees Farenheit



Dilutes or excludes
oxygen from the fire
Steam expansion can
displace hot smoke
and other products
of combustion
May smother fire by
excluding oxygen


Water absorbs the
heat using Latent
Heat of Vaporization,
creating steam and
cooling fuel below
ignition
temperatures.
Within a
compartment, the
steam created can
displace the oxygen.


The efficiency in which a fire stream absorbs
heat is largely dependant on the surface area
of the water introduced into the heated
environment
This is demonstrated by the use of a fog
nozzle or a solid stream, or a hand line vs. a
master stream…



A solid stream is more compact
Fog has more surface area
If you have a large fire with high heat, a fog
nozzle on a hand-line may not be able to
penetrate to the seat of the fire and might
evaporate before reaching the heated fuel
and the hot seat of the fire… A Master
Stream might do it!

According to Essentials of Firefighting 5th Addition,
a Master Stream discharges more than 350 GPM
and is fed by 2 ½ or 3 inch hose-lines or large
diameter hoses connected to a Master Stream
nozzle. Master Streams are large volume fire
streams.
The Blitzfire is a simple, light, and
highly maneuverable attack monitor.
The Blitzfire's low elevation angle
makes it suitable for use indoors. It
can go anywhere a handline goes while
delivering far more water. If the
Blitzfire starts to slide or lift the
SAFETY SHUT-OFF VALVE automatically
shuts off the flow of water. This safety
feature reduces the risk of injury from
an out-of-control appliance. The shutoff slows near stroke end to eliminate
water hammer.
To reset the flow simply open the valve
to any of six detent flow positions with
the turbulence-free slide valve. The
Blitzfire's discharge pivots make
directing the stream extremely quick
and effortless. A unique up/down pivot
on the hose inlet allows the monitor to
have stability even on porches, stair
landings or the like.
Release strap from housing
Depress release mechanism
Blitzfire is pre-connected with
50 ft down, and 100 up for a
total of a150 ft deployment
Stabilizer arms must be folded out

1” tip
Fog Nozzle
1 ½” tip 
1 ¼” tip
FOG Nozzle
◦ The Blitzfire has a
fog nozzle that is
kept in the pump
operators
compartment…
Solid Stream Nozzle
◦ You can increase or
decrease flow (GPM)
by Changing out the
tips on the solid
stream nozzle.
The nozzle swivels and allows it to be pointed in
any direction. It will stay there on its own and
allows for the Blitzfire to be left unattended
Pull handle back to
operate BLITZFIRE
Unlock pin before
pulling handle back
Removable tips to increase or
decrease flow
Smaller Diameter Tip

◦
More Pressure … Less Flow
Bigger Diameter Tip

◦
Less Pressure… More Flow


All of our Engines are different. On 2805
there is no spot to open up the deck gun
from the pump panel. It is connected directly
to the pump. A firefighter has to climb up
and manually open a valve. When using
2805’s Deck Gun as a Ground Monitor, it
must be opened and controlled from the
pump.
On 2808, the Deck Gun must be activated
from the pump panel. This is true even when
it is being used as a ground monitor.
 The
only way to really
understand is to operate
this equipment.
 Come in to the station and
ask questions.
Once the pump operator opens
the valve to the deck gun, it will
shoot water on Engine 2808.
Crank handle moves tip up and
down. Side to side movement is
achieved by simply swiveling the
deck gun in its housing
Up and down movement
is chain driven on 2805.
You can see the plastic
chain guard here.
Every Turret or Deck Gun that we have
comes off in a different way. Get down
to the station and learn how to do it.
Pretzel style layout on
ground provides
stability
Monitors have a chain that needs to
be connected to front of Pretzel lay
Stabilizer Arms are deployed
Ground Monitors are fed by two 2 ½ “ inch hoses
Bases for Ground monitors
are located on top of the
engine next to the deck
Gun
Pin must not be
pulled when
operating as a
ground monitor
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