suitable to deliver fluid into the tapered passageway 31 such as elliptical triangular d shaped and the like in this preferred embodiment the ports 37 39 are tangential to the inner surface of the tapered passageway 31 and enter the tapered passageway 31 at the same angle as the taper of the tapered passageway 31 which enhances the delivery of the first fluid flow into the tapered passageway 31 and ultimately the distribution of the first fluid flow around the tapered passageway 31 although this preferred embodiment discloses tangential ports 37 39 angled with the taper of the tapered passageway 31 those of ordinary skill in the art will recognize that the ports 37 39 can enter the tapered passageway 31 at any angle relative to the taper of the tapered passageway 31 additionally the end of the nozzle body 29 defining the inlet side 32 includes a taper the same angle as the taper of the tapered passageway 31 to ensure the ports 37 39 each define a substantially trapezoidal shape the end cap 30 abuts the end of the nozzle body 29 defining the inlet side 32 to seal the inlet side 32 thereby permitting fluid to enter into the tapered passageway 31 through ports 37 39 only accordingly the inner face of the end cap 30 that abuts the end of the nozzle body 29 defining the inlet side 32 includes a taper the same angle as the taper of the tapered passageway 31 the end cap 30 attaches to the end of the nozzle body 29 defining the.