8
• Position the pump as near to the water source as possible.
• Ensure there is adequate drainage and there is no risk of damage
to property as a result of water being discharged.
• The performance of your pump will be affected by the diameter of
the inlet pipe - any restriction will greatly reduce the flow. We
strongly recommend that you use as large a pipe diameter as
practical.
• A gate valve may be installed on the delivery (outlet) side of the
pump which can be adjusted as required to regulate the flow of
water and can also assist in priming the pump.
CAUTION: DO NOT PLACE ANY RESTRICTION ON THE SUCTION (INLET)
SIDE OF THE PUMP UNLESS IT IS AN ISOLATOR VALVE IN A GRAVITY FED
SYSTEM. THESE PUMPS SHOULD NOT BE OPERATED WITH THE DELIVERY
VALVE COMPLETELY CLOSED.
• To prevent unnecessary strain or possible distortion to the pump,
ensure that adequate support is provided to the hoses/pipes. They
will be considerably heavier when filled with water.
• Where the pump is to be a permanent fixture, the fittings to the
pump must be flexible, i.e. a short piece of hose should be installed
between the rigid pipework and the pump.
IMPORTANT: An air leak in the suction line will prevent priming and reduce the
capacity of the pump.
Pay particular attention to the following:
a. Keep all hoses as short and straight as possible and avoid sharp
bends.
b. Ensure there is adequate drainage for the discharged water.
c. If a flexible hose must be laid across a roadway, protect it with
planking.
(Instantaneous shut off pressure, applied when a vehicle runs across an
unprotected hose, could cause “hydraulic shock”, which can damage the
pump and/or the hose).
USING A FOOT VALVE/FILTER
Instead of using the pump for boosting an existing water supply,the pump
may typically be used for drawing raw water from a well or excavation. In
these applications a foot valve/coarse filter should be fitted to the lower end
of the suction hose as illustrated in Fig 2. This will retain water in the suction
system and more importantly, to prevent the possibility of large objects
entering the pump body.
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