A booster pump is just a pump, with a bladder tank or without, that allows you to raise domestic water pressure or maintain it in the pipes during times of heavy demand. Pool owners may find it worthwhile to operate at relatively high pressure, since automatic cleaners and other robots can remove encrusted dirt more effectively.
You may want to get a swimming pool booster pump for your system. But what are the factors that determine power, flow and pressure for a booster pump?
The force of water at the discharge point is known as pressure, depending on pump pipe cross-section, and expressed in B (bars). Manufacturers may also indicate pressure in CMW (column metres of water).
Pressure and flow are inseparable. This is a key law of hydraulics: for a certain flow, lower pressure will be produced by a larger-section pipe in comparison to a smaller-section.
In expressing discharge height, CMW is the unit used. It’s a critical criterion as you must ensure that the pumped water actually reaches the target discharge point. In most cases, surface pump makers will report a discharge height, or the level difference between the pump and the discharge point, or a TMH or the total manometric height in metres.
The central technical property of water systems is none other than flow. The flow rate refers to how much water is pumped as a function of time.
When buying a pump, however, note that flow rate will depend on suction depth and the discharge height. For a particular diameter of pump pipe, the same pump will create less flow as the height difference goes up.
On the other hand, flow rate increases as the height between your suction and discharge points goes up. If your surface pump will be supplying your home, allot at least 2m3/h at the discharge point for five users, then 0. For watering, give 1m3/h for 400m? and 3.
Around 2 to 3 B is considered the ‘comfortable’ domestic water pressure range, depending on how far the water supply point (water reservoir or tower) is located. Therefore, properties with the most remote, “end of the line” locations can suffer from low pressure and benefit from using a booster.
If you get water from a well, look at the suction depth as well as the type of water you’re sucking up. Also consider the discharge height i.e. the surface pump’s height from where the water will be distributed – for instance, if you want to water a garden that sits high above the well. When using an automatic watering system, the correct flow must be determined. Obviously, the more watering points there are, the more water will be needed.