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