Abstract: An improved method and apparatus for distribution of viscous materials such as concrete slurry or grout mixtures onto target surfaces, the apparatus connectable to a transfer pipe leading from an external pumping mechanism. The method and apparatus includes a generally rectangular chamber having walls providing an upper wall attached to a conduit, the conduit connectable to a transfer pipe by a pivotable annulus or ring. The pivotable annulus provides rotation of the chamber in approximately 360.degree. range of motion in relation to the transfer pipe. As the concrete slurry or grout mixtures are pumped through the chamber by an external pumping mechanism, the walls direct the viscous materials out through an outlet, formed in a lower portion of the front wall, the outlet having an opening shaped for directing the viscous materials toward target surfaces.