have an external groove 44 in which sits an o ring or clamp snap ring or other fastener 46 that abuts the outer wall 48 of inlet segment 12 this is best seen in fig3 and 7 slant cut 50 is on the transition portion and it is put there to allow the transition portion 14 to fit up to the inside surface of the cover sleeve 42 as compensation for the slant mounting of the insert with respect to the axis of the housing 32 the transition portion 14 is further defined by a 360 degree structure along a plane defined by the outlet surface 52 the top 54 of surface 52 is preferably located axially even with or below the lower end of sleeve 42 but not further out radially than sleeve 42 so that the exiting slurry flow will not directly impact the sleeve 42 even if there are small eddy streams as the main body of the flow continues toward the outlet portion 16 referring to fig4 it is noted that that lowermost outer location 51 of the transition portion 14 extends radially further from the axis 55 of the assembly than the lower end 53 of the insert 10 outlet 16 with this configuration the flowing slurry stream has the ability to fan outwardly after passing location 51 so as to lessen the impact on the surrounding tubular or casing while still affording protection to the housing exterior at 70 which is disposed parallel or near parallel to the contact surface 72 on the outlet portion 16 better seen in fig2 the transition.