The BluePump BS system needs no borehole casing.
Many NGOs have their own drilling equipment and know that an important part of a borehole is the PVC casing. Not only the cost of the casing is a concern, also the logistics to find the right casing is often a problem.
With the BluePump BS system, this is not a hassle anymore, on the contrary; the BluePump is therefore very cost-effective in new boreholes:
The PVC rising main pipes of the BluePump can directly be installed in the new boreholes, withouth first putting in the traditional 4 or 5 inch PVC casing pipes with a filter screen.
In fact, the rising main becomes the borehole screen, only with a smaller diameter. This also makes drilling easier and cheaper. For a "standard" casing the driling diameter must be at least 6 inch, but with the BluePump BS system, a borehole diameter of 4 inch is already sufficient.
After drilling and installing the BluePump BS casing pipes & screens, the project can directly proceed with the construction of the concrete base with the anchor bolts and wait for 5 days until the concrete has hardened.
The next week the blue box is installed and the installation is completed by lowering the cylinder with the rods (the yellow elements on the picture on the left) into the pipes until it fits in the conical seat, connect the rods to the handle and the pump is ready to use.
The BS casing pump system will save the project more money and time when the borehole is deeper. Imagine, the cost of a standard casing for 80m is at least some 1.000 US$ that can now be spent on other issues.
However, it is not only the cost of the traditional casing that is a concern, but also the logistics to get the casing to the site and the additional time to put it in adds to the total cost and hassle of making a water point.
The standard installation procedure for the PVC pipes is with strong glued sockets, but the BluePump BS system for the casing pump can also be delivered with threaded BOODE PVC pipes, for even more convenient installation, see example on the left.
In case of sandy aquifers, the screens can be upgraded to with the BOODE pre-filter elements: the BOODE PAC - Dual wall P.V.C. screen can be used, to avoid that fine sand will enter in the pipes. This double filter system is easy to install and can be put together on the location.
It now all comes together on you location, directly in a 20ft. container from BOODE: The BluePumps, the BS system with screens (and optional the Dual wall screens; high quality washed filter sand and swelling clay pellets for sealing the borehole).
Just drill and install ...
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