have the capability of supporting the electric
motor power supply diesels become the preferred
driver. Generators are another option for supplying
the power to the electric motor.
The sprinkler pumps supply water to the riser
pipes of the sprinkler system. The sprinkler ranges
take their supply from the riser pipes.
The pump takes its water supply from a water
tank, rated to supply the system at maximum
demand for 60 or 90 minutes.
The key components of the system are
approved for use in a fire sprinkler system.
Pump types
The most common types of pumps used in
sprinkler system water supplier are centrifugal end
suction and spilt case. These pumps can transfer
fluids with high efficiencies over a wide range of
flows and pressures. The pumps are used in ordi-
nary hazard risks such as schools, shops, hotels,
hospitals and office premises and extra high
hazard risks such as warehouses and factories.
The end suction type pump takes its water from
the end of the pump and discharges at the top.
The horizontal split case type takes and discharges
water at the side.
The pumps can be used when the water supply
is below the mounting level of the pump but the
most popular way of approaching a lift situation is
with vertical turbine pumps.
Fire pump packages develop to meet
industry needs
As world markets advance and fire protection sys-
tems evolve to satisfy the new needs, fire pump
technology is developed to keep pace with the
demands created by the changes. Revised regula-
tions are also determining the duty demands and
specification requirements of fire pump packages.
Combined, this results in an ever-changing scope
of package supply with new pump types required
and packages developed to satisfy the needs of
current and future applications.
High-rise buildings
Construction of high-rise buildings is on the increase
in major cities. The heights of the buildings are rising
constantly as ground space becomes even more
precious. If only one riser were to be installed in a
high rise building then the lower sprinkler ranges
would have to find a way to overcome the high
pressure needed to satisfy the demands of the high-
est level that sprinklers are installed. High pressures
44 INTERNATIONAL FIRE PROTECTION
End suction, close
coupled type fire pump
PUMP TECHNOLOGY

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