This arrangement permits reservoir 2 to be connectively angled out of nesting relationship with trough 28 by rotation of valve body 24 about immobilized cylindrical valve member 24b, while simultaneous controlling valve operation in response to the relative positioning of reservoir 2 with {HEAD ~ respect} to {TAIL ~ trough} 28 
This arrangement permits reservoir 2 to be connectively angled out of nesting relationship with trough 28 by rotation of valve body 24 about immobilized cylindrical valve member 24b , while simultaneous controlling valve operation in response to the relative positioning of reservoir 2 with { HEAD ~ respect } to { TAIL ~ trough } 28
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL OTH