therefore require one to change the entire nozzle body in order to change the orifice in another instance it may be necessary to change the orifice due to wear which results in the increase in flow area and or change in shape with the nozzle arrangement in accordance with the invention disclosed here one has to only change a single piece that bears the opening for the discharge orifice in order to change the orifice size fig4 amp 5 shows the arrangement of a beer can type nozzle 40 in accordance with this invention fig4 shows the cross section through the nozzle while fig5 a shows a view of the bottom end of the nozzle 50 with the details for the variable orifice fig5 b gives a more details view of a section of the arrangement in fig5 a in the case of the beer can nozzle 40 the fluid is delivered through a pipe 41 which is mounted to the inlet orifice 45 found on the nozzle body 42 according to fig5 a the fluid entering through 41 travels through the passage 51 and enters the body at the top of the inner cavity 46 of the nozzle while traveling tangent to its wall the fluid swirls around the inner cavity as illustrated by the path 52 and is finally ejected through the orifice the orifice 44 the orifice is made by drilling a hole on the orifice disk 43 unlike the prior.