A pair of {HEAD ~ flanges} 27, protrude centrally from opposed ends of cylindrical valve member 24b along cylindrical axis C thereof, perpendicular with {TAIL ~ the longitudinal axis} of reservoir 2 
A pair of { HEAD ~ flanges } 27 , protrude centrally from opposed ends of cylindrical valve member 24b along cylindrical axis C thereof , perpendicular with { TAIL ~ the longitudinal axis } of reservoir 2
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH