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ROTARY GEAR PUMP
ELECTRONIC FOAM PROPORTIONING SYSTEM
Section
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: Installation
INSTALLER SUPPLIED COMPONENT
RECOMMENDATIONS
Due to the many differences in apparatus
configuration and apparatus design
requirements the Hale FoamMaster system
installer must supply components such as
mounting brackets, piping, hoses, fittings
and some electrical wiring. The following
guidelines are recommendations for
selection of these additional components
for a complete system installation. The
recommendations made reflect those
materials and components that have been
tested extensively with Hale FoamMaster
systems and provide proven reliable
performance.
FOAM CONCENTRATE SUCTION HOSE
The system installer must supply fittings and
hoses from the foam tank to the inlet of the
foam pump. All components selected will
transfer foam concentrate therefore they
must be compatible with the foam
concentrates being used in the system.
Hoses for Class A foam concentrates must
have minimum ¾ inch (19 mm) inside
diameter. Hoses for Class B foam
concentrates must have minimum 1 inch
(25 mm) inside diameter due to higher
viscosity of the concentrates.
Hoses for the foam concentrate suction
that WILL NOT be subjected to high pressure
such as flushing water and foam
concentrate discharge must have a rating
of 23 in (584.2 mm) Hg vacuum and 50 PSI
(3 BAR) pressure or greater. These hoses
include the hose from the foam tank outlet
to strainer inlet; strainer outlet to foam
pump, ADT, MDT
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or MST inlet.
NFPA requires that foam concentrate
suction hose be clear to observe foam
concentrate flow during foam pump
operation.
RECOMMENDED COMPONENTS:
Hose:
PVC, Kuriyama Kuri-Tec K7130
series
Fittings: Hose Barb Type; Brass, Stainless
Steel or Nylon
When foam concentrate suction hose will
be subject to flushing water pressure it must
be rated for 23 in (584.2 mm) Hg vacuum
and the maximum discharge pressure of the
fire pump [500 PSI (34 BAR) minimum].
These hoses include the hose from the
outlet of the MDT
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or MST to the foam
pump inlet.
RECOMMENDED COMPONENTS:
Hose:
Aeroquip 2580 Series or Equivalent
Reinforced Hydraulic Hose.
Fittings: Brass or Stainless Steel Hose End
Crimp or Reusable Type (Aeroquip
412 Series or Equivalent)
A foam tank shut-off valve and drain valve
should be provided in the foam tank suction
hose to allow strainer service, tank drainage
and easier priming. These components are
subject to the same material characteristics
and pressure ratings as stated above.
When the In-line strainer/valve assembly
option is installed the shut-off valve is
included as an integral part of the assembly
and a separate valve is not required.
FOAM CONCENTRATE DISCHARGE HOSE
The system installer must supply fittings and
hoses from the foam pump inject
connection to the check valve/injector
fitting inlet. All components selected will
transfer foam concentrate therefore they
must be compatible with the foam
concentrates being used in the system.
