borehole pump data sheets
Borehole pump data sheets for Pedrollo 4 SR 4″ water pumps
This is the link page for the 4″ borehole pump range available from Pedrollo water pumps in South Africa.
Link to the PDF file here
.Borehole pumps 4 SR Pedrollo
Existing borehole
When enquiring for assistance with the design and supply of the equipment for an existing borehole, please have the following details available:-
- How deep is the borehole? (total depth?)
- How deep is the water table? (Depth of water from surface?)
- What is the yield of the borehole? (Litres per minute maximum the borehole will deliver?)
- What voltage is available in site? (220v or 380 v)
- What size discharge pipe from borehole to storage is installed? (ID of the pipe is very important)
- What is the length of the pipe from the borehole pump to storage or usage point?
- Is there as proper protective control panel installed?
New borehole
You have just had a new deep well hole drilled and now you are faced with deciding on what size pump to install.
Contrary to many other factors such as the use of the water for, domestic, small or large irrigation, industrial process water, community water supply or any other specific usage, the first place to start is with the yield of the borehole. The company that drilled the hole needs to also conduct a draw down test in order to establish the borehole yield. This becomes critical when deciding on the borehole pump to install. In order to protect your investment in the actual drilling and possibly even the casing of the borehole, one needs to ensure that the water supply will not only remain constant but be sustainable. Selecting a borehole pump which draws the borehold yield down rapidly will effectively result in cave in of the borehole over time. If that occurs a costly action will beed to be undertaken where the hole is redrilled.
Many professional borehole drillers and equipers will select a pump at 80% of the yield. That is not a bad suggestion, however a 50% pump size based on yield enables the following:-
- A smaller powered pump with obvious savings in power costs.
- A more stable borehole structure due to the stability of the water table in the well.
- A more cost effective control panel and smaller cable diameter which reduces capital and operating costs
- An easy conversion to solar power in the future if that is envisaged.
An example of borehole pump selection on the right is a borehole yield of 80 litre per minute and a head from pump to surface of 125 meters with a tank directly above the borehole pump.
The selection of the pump is also determined by operating at the peak efficiency point on the curve shown in Green.
Please forward your enquiry for your borehole pump to sales@pedropumps.com or sales@pedrollopumps.com
Please note this is for customers in South Africa and the countries which are surrounding South African borders only. We do not ship off continent.
Link to submersible pumps here
Link to Pedrollo pumps South Africa orignal website
