Human Powered Borehole Pump FAQ’s
That’s a really strange looking pump, does it really work?
- Indeed it does, and very effectively so, this depending on the size. One can pump a head of water from rather deep down with 50mm (2inch) tubing. Our smallest system delivers in the region of UPTO 3800L/Hr per hour at a depth of 40m (100ft)
What happens when you stop pumping, does the water drop back down the pipe to the water level in the borehole?
- Luckily not. When we designed the system with the submersible pump, we added a series of patent designed non-return valves. These valves vary the deeper the feeder pipe goes, and are based on pressure and water density. This keeps the water at the top of the piping, constantly ready for instant delivery.
Does this not allow the water to become stale or stagnated within the pipe or tubing?
- Not at all, as most boreholes are utilized in a very similar and regular basis in most of the villages, this for drinking water as well as for irrigation purposes, including the filling of dams on a daily basis.
How much effort has to go into keeping the pump in full operation or optimal delivery?
- Actually very little effort goes into maintaining the systems optimum oscillation required, as it’s the pendulum that does all the work for you, therefore one needs to keep the pendulum swinging at its natural max “arc”. Once the system is in oscillation, one can keep it going with one finger, even a child can do it, as long as it does not go past its point of zenith and start to deliver negative or forced energy.
Sounds all good and well, but our cultivatable ground is not in one big square in front of you. We have to grow our crops as and where the land is fertile and large enough to deliver enough to make it feasible to plant there.
- These systems are very portable. What we have suggested to many farmers in the same predicament is to mount the systems on the back of a van, whether 4×4 or a normal van, and attach stabilizers to the rear of the vehicle, on both left and right rear corners. Once you get to the borehole at the site to be irrigated, align the van with the borehole, attach the system, stabilize the van and start pumping. Once you have completed that area, then uncouple the system and move to the next field.
In the case of very rural farmers, we have clients that make use of draught animal power to draw the systems from one field to another, which works very well for them.
How far down does your system go, or reach?
- Most water is, contrary to belief, not very far under the surface of the earth averaging between 20-40m, (8-16ft). Having said that, we have had instances where we have had to manufacture a specialised linked system that had to drop to a depth of 280m (700ft), which, once flowing continued to work very well.
Our systems mostly run on needle bearings which assist in almost frictionless motion, to a large extent. These bearings are sealed and are able to withstand the elements.