A booster pump is quite simply a pump that may or may not have a bladder tank, and allows you to change your domestic water pressure when demand is heavy. If you have a pool, it can be good to operate at relatively high pressure, with automatic cleaners and other robots being better at eliminating encrusted dirt.
Equipping your system with a swimming pool booster pump may be a good idea. But what are the factors that determine power, flow and pressure for a booster pump?
Pressure is the force of the water at the discharge point in B (bars), and this depends on pump pipe cross-section. Some manufacturers also express pressure in CMW (column metres of water).
Pressure follows flow around. 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.
Discharge height is indicated in CMW. 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.
Flow is the core technical characteristic of a water systems. 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 specific diameter of pump pipe, less flow will be produced by the same pump and the height difference will be greater too.
Conversely, the smaller the distance between your suction and discharge points in height, the greater the flow rate will be. 250m3/h for each additional user. 5m3/h for 800m?.
Domestic water pressure that is considered “comfortable” is anywhere from 2 to 3 B, depending on distance from the water tower or reservoir. Therefore, properties with the most remote, “end of the line” locations can suffer from low pressure and benefit from using a booster.
If you pull water from a well, consider the suction depth and the type of water you’re getting. Look at discharge height too, which is the distance from the surface pump to the water distribution site – as when you water a garden that lies high above the well. Those who use an automatic watering system should take time to determine their required flow. Obviously, you will need more water the more watering points you have.