in fig1 a and 1b may undertake an arcuate type shape and it is either cast along the interior walls of the vertical portion 3 of the tee 1 where it transitions into the horizontal section 2 generally at that location as noted at 7 as noted the ledge 5 is of relatively shallow shape but is sufficient to allow for the accumulation of the granular material between its upper surface and the inner arcuate portion of the front of the tee as at the curved portion of the upper front portion 6 with the accumulated product or granular material being shown at 8 and therein functioning as a formed wear pad against which other granular material being unloaded will impinge so that the granular material as it flows does not rub against the interior arcuate section of the pipe but rather acts or biases against the formed wear pad 8 as can be noted thus abrasion does not occur to the tee 1 because the unloading granular material or product does not rub against the internal surface of the tee 1 at that location but rather biases against its own product as can be seen as can be seen in fig2 a and 2b the ledge 5 either will be integrally cast within the tee forming that pocket surface along the interior of the tee at that location or the ledge.