How To Choose The Right Pipe Size For Your Pond Pump. Free Calculator

calculators to help you choose right pond pump pipe diameter

Basic Instructions On The Spreadsheet

When water flows through a pipe pressure is "lost". This is important concept when designing for accurate pump specification calculations are complex but this table allows for good approximation The following table applies to new plastic pipe of internal diameters as shown Diameter is critically important The main use of this table is to convince you that you should always minimise pipe length and maximize pipe diameter In this way the head loss due to friction is minimized Notice the 3 red cells in the diagram to explain this in numerical terms You will see about 4 times more pressure is lost if pipe is 0.61 inch diameter compared to 0.82 inch diameter
It does not matter if pipe is inclined or flat or going downhill the same principle applies ...  calculators to help you choose right pond pump pipe diameter

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Tip when you download the Excel file ...

Use right click then select "Save Target As ..." to save the file on your own hard drive. All the calculators are interactive so I suggest you save the master copy just in case you make an incorrect change.

calculators to help you choose right pond pump pipe diameter

How To Convert Different Measurement Units

• To convert gallons to litres multiply by 4.54

• To convert gallons to US gallons multiply by 1.2

• To convert US gallons to litres multiply by 3.78

• To convert cu.feet to gallons multiply by 6.23

• To convert cu.feet to US gallons multiply by 7.48

• To convert inches to cm multiply by 2.54

• To convert feet to metres multiply by 0.305

• To convert pounds to kilograms multiply by 2.2

• To convert sq. feet to sq. Metres multiply by 0.093

• To convert cu metres to litres multiply by 1000

Of course to convert in the other direction you divide by the factor. For example to convert litres to gallons you would divide by 4.54