a cup shaped housing having {TAIL ~ an open mouth} and having {HEAD ~ an inlet} and an outlet formed therein 
a cup shaped housing having { TAIL ~ an open mouth } and having { HEAD ~ an inlet } and an outlet formed therein
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH