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Factors that Dictate Booster Pump Power, Flow and Pressure

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. Pool owners will find it smart to operate at relatively high pressure because automatic cleaners and other robots are do better at removing encrusted dirt.
You may want to get a swimming pool booster pump for your system. But how do you determine booster pump power, flow and pressure?

Pressure

Pressure refers to the force of the water in B (bars) at discharge point, depending on pump pipe cross-section. Manufacturers may also indicate 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

The unit used to express discharge height is CMW. It’s a vital criterion because you have to make sure that the pumped water gets to the intended discharge point. Surface pump manufacturing companies often report a discharge height (the difference in level between pump and discharge point) or a TMH (the total manometric height expressed in metres).

Flow

Flow is the core technical characteristic of a water systems. The flow rate is the amount of water that is pumped per period of time.

When selecting a pump, remember though that flow rate is dependent on two factors: 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.

On the other hand, the shorter the height between your suction and discharge points , the greater the flow rate. 250m3/h for each additional user. 5m3/h for 800m?.

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. In other words, remote, “end of the line” properties may deal with low pressure and find a booster useful.

If you get water from a well, look at the suction depth as well as the type of water you’re sucking up. 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. If you use an automatic watering system, make it a point to work out your required flow. Of course, more watering points mean more water required.

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