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To guarantee a perfect working of the SWN80 handpump the diameter of the borehole must be (minimum) 100mm.
CLICK to get the technical drawings of the pumphead- and foot, the riser rod and the pumpcylinder.
CLICK to see the 3-Dimensional animation of the SWN80 handpump
CLICK to see the overview of all the (spare)parts of the SWN80
CLICK to see the Installation Guide of the SWN80