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LATERAL CHANNEL SELF PRIMING PUMPS TYPE ‘A’
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DESCRIPTION:
Pump type ‘A’ are horizontal, lateral
channel, self priming pumps acting on regenerative principal. Both suction
and delivery branches are vertical so that liquid remains inside the pumps
even when the pump is switched off. This ensures priming of the pump. The
rotor of the pump is supported by antifriction bearings at both ends. These
bearing are grease lubricated. The
pumps are provided with stuffing box packing. Depending on the application,
mechanical seal can also be provided. Pump
type ‘A’ are designed for continuous operation handling only clear liquid,
free from any suspended particles.
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APPLICATION:
Domestic. Transfer of liquid containing air, gas,
marine, refrigeration, fuel oil etc.
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STANDARD MATERIAL OF CONSTRUCTION:
Casing: Close grained cast
iron.
Impeller: Bronze
Shaft: Stainless steel
Special material of construction also available on request.
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Tolerance of capacity±
10% at rated
head and rated RPM.
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Discharge indicated in the selection
chart apply to water barometric height of 760 mm mercury column and
at a temperature of 300C.
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Power indicated is that absorbed at
the pump shaft when pumping liquids having specific gravity of 1.0 and
viscosity of 1 CST.
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Maximum permissible speed is 1800
RPM.
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For standard execution maximum permissible
temperature of the liquid is 600C. Hot water construction (designated
by ‘H’) is also available for liquids with temperature between 600C.
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For hot water pumps capacity will be
reduced by approximately 10%.
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Direction of rotation – clock wise seeing
from the drive end. Reverse rotation (designated by ‘RR’) also available
on request.
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Maximum suction lift is 8
meters (Including
friction losses) depending pan the duty point. Capacity reduces over
4 M. suction lift.
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Before starting valves on suction and
delivery sides must be opened.
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Before starting the pump for the first
time it must be filled with liquid to ensure priming. No
subsequent external priming is necessary.
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