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| Features Common to All Viking
Pumps - Specifications
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| Constant capacity regardless
of pressure. Viking positive displacement
pumps provides relatively constant output regardless
of changes in pressure, making them well suited
for metering applications. |
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| Flow proportional to speed.
The pump's output is directly proportional to its
speed, allowing it to be used for metering applications
using a variable speed drive following a process
control signal. |
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| Direction of flow is reversible.
The same Viking pump may be used for loading and
unloading of tanks when used with a driver capable
of reversing direction. (Exceptions are Viking Spur
Gear, which are not bi-rotational as standard but
can be made so as an option, and some Viking Mag
Drive® models). Note that pressure relief must
be provided in both directions of operation. |
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| Smooth, near-laminar flow.
Unlike reciprocating PD pumps (including diaphragm,
piston, plunger and rotating piston principles),
Viking rotary pumps offer smooth, non-pulsating
flow which reduces friction loss and cavitation
due to acceleration and deceleration losses, reduces
water hammer, and aids in mixing two streams by
eliminating slugs of fluid. |
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| Self-priming, with suction
lift capabilities. Viking pumps are capable
of self priming when wetted, and are capable of
pulling a suction lift where positive suction head
is not available. |
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Viking
Pumping Principle Comparison |
Characteristics |
Internal
Gear |
External
Gear |
Rotary
Lobe |
Vane
Pump |
| Maximum Capacity (GPM / M3/Hr) |
1,500 /
345 |
32 / 7.3 |
820 / 184 |
160 / 640 |
| Maximum Discharge Pressure
(PSI / Bar) |
250 / 17 |
2500 /
172 |
400 / 27 |
200 / 14 |
| Maximum Viscosity (SSU / cSt) |
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