Spear Point Filters

Spear Point Filters are designed primarily for use at the bottom of bore holes where a water spear is placed down the centre of the bore casing. The bore casing is then pulled back up exposing the Spear Point Filter to the artesian water table. The pump then draws water through the Spear Point Filter to the surface screening out any foreign matter which may damage the pump and associated equipment.

In areas where the artesian water supply can vary in capacity, a draw down tube can be fitted inside the Spear Point Filter. This allows the whole length of the Spear Point Filter to screen the water when available, however only allowing water to be drawn from the bottom of the Spear Point Filter ensuring the pump is kept primed. The Draw Down Tube must be fitted at the time of construction.

Spear Point Filters can be used in other circumstances such as pumping from creeks and dams in temporary situations. A non-return valve can be located on top of the unit.