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Why two fountain pumps?
Why two pumps for some fountains? Some fountains and
water features require 2 pumps or
more, we often get asked why will one pump not work? The answer is simple,
one pump is not enough, as the pictures below show.
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This picture shows an EFN 150 pump with a
Schaumsprudler 22-5 nozzle Its not high, but it works well |
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Here is the same EFN 150 pump with a Schaumsprudler 35-10e
nozzle (connected via a 1/2 -1 inch adapter) You can see the flow
is quite feeble, this is because the EFN 150 pump can not pump
enough water to operate the nozzle (water demand) |
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This is the equivalent of 3 pumps as you can see it makes one
big difference. |
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This 2m diameter spray ring requires 2 pumps to operate
correctly because one pump could only make the jets reach 1 metre
high, not 2 metres as shown in this picture |
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The number /size of pumps also depends on
the height the water must reach, in particular spray rings (and
waterfalls) since these have a high water demand and this can
not always be met by one pump alone. Quite often a single pump can
be used but it will need to be a 3 phase pump, and as such costs
considerably more, and not all installations have a 3 phase
electricity supply.
Pump information index
more info |
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