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 {HEAD ~ the relative positioning} of reservoir 2 with 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 { HEAD ~ the relative positioning } of reservoir 2 with 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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH