Pumps for "Deluxe projecting sheet"
spillways
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PUMPS How to choose :
A projecting sheet spillway requires a flow of at least 700
Litres per hour for every 100mm
of spillway width. This flow rate is measured at the spillway, therefore in
choosing the pump, the distance* between the surface of the water and the
spillway is a factor that only you will know. We have therefore made a
number of suggestions below based on about 1.0m mounting, covering a variety
of price points. The (list starts with the best quality and works right).
*The higher the water is being pumped, the larger the pump must be.
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Spillway
length |
Min
flow rate required at the spillway |
Pump location |
Potential pumps based
on about a 1.0m mounting height*
*Choice
of pump will depend on the head** (pumping height) |
|
600mm |
4,200
litres per hr |
If inside pond |
Laguna
MaxFlo 6000
Little Giant WGP55
Pondmate
4800 |
|
If outside pond |
Pondmate
4800
Mebner MP 6000**
slightly oversize |
|
800mm |
5,600
litres per hr |
If inside
pond |
Oase Neptun
6000 Laguna
MaxFlo 7500
Little Giant WGP65
Pondmate
6000 |
|
If outside pond |
Oase Neptun
6000
Pondmate
6000
Mebner
MP8000** slightly oversize |
|
1000mm |
7,000
litres per hr |
If
inside
pond |
Oase Neptun
9000
Laguna MaxFlo 9000
Little Giant WGP65 Pondmate
8500 |
|
If outside pond |
Oase Neptun
9000
Pondmate
8500 |
|
1200mm |
8,400
litres per hr |
If inside pond |
Oase Neptun
12000* Laguna
MaxFlo 11000
Little Giant WGP75
*slightly oversize
|
|
If outside pond |
Oase Neptun
12000*
Pondmate
10000
Mebner MP10000 |
|
1500mm |
10,500
litres per hr |
If inside pond |
Oase Neptun
12000
Little Giant WGP95 Pondmate
15000**slightly oversize |
|
If outside pond |
Oase Neptun
12000
Pondmate
15000**slightly oversize |
|
1800mm |
12,600
litres per hr |
If inside pond |
Pondmate
18000 Laguna
MaxFlo 16000
Pondmate
15000**
|
|
If outside pond |
Pondmate
18000** slightly
oversize |
|
2400mm |
16,800
litres per hr |
If inside pond |
Oase -
Atlantis 200 Mebner
21000 Pondmate
18000** **slightly
undersize |
|
If outside pond |
Mebner
21000
Pondmate
18000***
slightly undersize |
Aussie says
 |
**Head,
the distance between the top of the water in the pond and the mounting
height of the spillway.
Tip
1: A point to consider for the projecting
sheet effect: The further the water
drops, the narrower it becomes due to
surface tension. The drop in
the photo on the spillway page is .9m to give you an idea. Another way to understand this
tapering effect is that for every 50cm of drop,
the width of the sheet of water narrows by about 100mm.
After a drop of about 900mm the sheet starts to break up.
Tip 2:
Any elbows or tees in the system will reduce flow.
On the 2 inlet model
spillways, it may be desirable to use two pumps, this will avoid the need
for a tee.
Tip 3:
How to neatly get the electrical cable from the pump and the water tube out
of the pond cleanly and allow for service.
Click here |
