General Information - Task Force Tips MASTERSTREAM Series Instructions For Safe Operation And Maintenance

2.0 GENERAL INFORMATION

The Task Force Tips Masterstream Series Nozzles are automatic pressure control deluge nozzles. These automatic nozzles operate by
sensing the pressure at the nozzle's inlet and adjusting the discharge opening to maintain a constant pressure throughout the flow
range of the nozzle. While flowing, the stream pattern can be varied from wide fog to straight stream. Trapped debris can be removed
without the use of tools.
These nozzles are constructed of hardcoat anodized aluminum and UV resistant rubber. Their rugged construction is compatible with
the use of fresh water as well as firefighting foam solutions. A summary of each nozzle's characteristics is shown in the table below.
SERIES
MASTERSTREAM 1250
MASTERSTREAM 2000
MASTERSTREAM 4000
NOTES ON ABOVE TABLE:
!
Other threads, coupling sizes or connector styles can be specified at time of order.
!
Masterstream 1250 nozzle is also available in selectable gallonage or fixed orifice models. See catalog for details.
!
Masterstream 2000 and 4000 nozzles are field adjustable within the range of pressures shown.
!
For long term installations, it is recommended that the threads be greased before installing the nozzle.
OPERATING NOTE ABOUT AUTOMATIC NOZZLES: The automatic nozzle is considerably different than "conventional" nozzles
because of basic changes in the operating principle. These differences not only assure the most effective operation under a variety of
conditions, but will also utilize the available water supply most efficiently. It is important that nozzle operators, pump operators, and
officers be fully aware of these differences. Therefore, proper instruction is required for safe and effective operations.
WARNING
CAUTION
CAUTION
WARNING
WARNING
WARNING
1 Electrostatic Hazards of Foam Blanketing Operations by Peter Howels. Industrial Fire Safety July/August 1993
2 The Fire Fighter and Electrical Equipment, The University of Michigan Extension Service, Fourth Printing 1983. Page 47.
©Copyright Task Force Tips, Inc. 1999-2005
FLOW FLOW
(GPM) (LPM)
150-1250 600-4700
300-2000 1100-7600
600-4000 2300-15000
This equipment is intended for use by trained personnel for firefighting. Their use for other
purposes may involve hazards not addressed by this manual. Seek appropriate guidance and
training to reduce risk of injury.
Nozzle must be properly connected. Mismatched or damaged threads may cause nozzle to leak or
uncouple under pressure and could cause injury.
Do not couple aluminum to brass. Dissimilar metals coupled together can cause galvanic corrosion
that can result in inability to unscrew threads or complete loss of thread engagement.
Injury can occur from an inadequately supported nozzle. The mounting must be capable of
supporting the nozzle reaction force which can be in excess of 2300 lbs (4000 GPM at 120 PSI).
Some volatile liquids can be ignited by static discharge.
Static build-up can occur from:
&
Electrochemical separation of charge as water drains through low conductivity, refined
products.
&
Applying foam over a low conductivity liquid of sufficient depth to retain the charge created
as the foam blanket drains.
&
Streaming currents as water or foam is introduced into the storage tank.
Water is a conductor of electricity. Application of water solutions on high voltage equipment can
cause injury or death by electrocution. The amount of current that may be carried back to the nozzle
will depend on the following factors:
&
Voltage of the line or equipment
&
Distance from the nozzle to the line or equipment
&
Size of the stream
&
Whether the stream is solid or broken
&
Purity of the water
PRESSURE
(PSI)
100
80-120
80-120
2
PRESSURE STANDARD
(BAR, KPA/100) COUPLING
7 2.5" NH FEMALE
5.5-8.3 3.5" NH FEMALE
5.5-8.3 6" ANSI 150 FLANGE
LIM-030 October 12, 2005 Rev 05
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