The new nozzle with filter for “unclean water” for industrial applications has been specifically designed
  for use with unfiltered water (such as water from aquifers). 
This nozzle is a patented innovation
  incorporating a plastic mesh filter with a surface area 20 times larger than
  the most common filters, which prevents the formation of clogs or plugs. This
  gives the nozzle greater longevity: to clean the filter you just use compressed air, while the
  nozzle orifice does not get obstructed because the mesh of the plastic filter
  is smaller than the hole of the nozzle. 
Another
 special feature of this nozzle is that you
  don’t have to buy an adapter for installation, since it is directly incorporated inside the nozzle.
  These features give this type of nozzle a longer lifetime compared to the
  traditional nozzles available on the market.