This is what we call a Type C Well and Pump. It was constructed in December 2012
We are trialing this method of percussion- hydraulic type drilling in the quarter of Mbanka in the village of Bamunka.
The organisation Water For All developed this method, though we have modified it a bit.
The drilling of the initial 75mm hole is done by a lot of manual labour.
Using this very basic method we drilled ( bored ) a 2" hole, then reamed that hole with a 4", and a 6" reamer.
Then fitted a 4" casing, with 6 meter of screen. We then made a pvc pump using the riser main as the cylinder,
on this pvc 1 - 1/4" riser main we attached a foot valve.
The " pump " used to get the water out is a very basic hand made typeUsing this very basic method we drilled ( bored ) a 2" hole, then reamed that hole with a 4", and a 6" reamer.
Then fitted a 4" casing, with 6 meter of screen. We then made a pvc pump using the riser main as the cylinder, on this pvc 1 - 1/4" riser main we attached a foot valve.
The " pump " used to get the water out is a very basic hand made type
For the " pump rod " we used a 1/2" pvc poly pipe with metal washer and rubber inner tube seal as the travelling check valve.
After installing and pumping we then decided to remove the 20 meter pump rod and riser out of the casing
to see if the one piece long riser could make the bend while removing, which it did.
Its intended that this Type C well and pump will be a cheap well to construct.
Its early days yet and more work and experimentation is required.
One of the advantages should be that local " technicians " can maintain and repair it very easy.
For more information about the Water for Cameroon project please visit us at waterforcameroon.com

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