The infusing unit includes an infusing casing with a large diameter upper section within which a main pipe section of {HEAD ~ the inlet pipe unit} is press fitted so as to establish a fluid tight seal therebetween, and {TAIL ~ a small diameter lower section} located coaxially within the discharge pipe unit 
The infusing unit includes an infusing casing with a large diameter upper section within which a main pipe section of { HEAD ~ the inlet pipe unit } is press fitted so as to establish a fluid tight seal therebetween , and { TAIL ~ a small diameter lower section } located coaxially within the discharge pipe unit
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH