Spray nozzle for cleaning the interior of tanks
FIG. 1 is a top perspective view of the spray nozzle for cleaning the interior of tanks; 
     FIG. 2 is a underneath perspective view of the spray nozzle for cleaning the interior of tanks; 
     FIG. 3 is a plan view of the spray nozzle for cleaning the interior of tanks; 
     FIG. 4 is a side elevation view in the direction of arrow 4 of FIG. 3; 
     FIG. 5 is an underneath plan view of the spray nozzle for cleaning the interior of tanks; 
     FIG. 6 is a side elevation view in the direction of arrow 6 of FIG. 3; 
     FIG. 7 is a side elevation view in the direction of arrow 7 of FIG. 3; 
     FIG. 8 is a section along line 8--8 of FIG. 7 looking in the direction of the arrows; and, 
     FIG. 9 is a section along line 9--9 of FIG. 4 looking in the direction of the arrows.