416 / | HD | FLUID REACTION SURFACES (I.E., IMPELLERS) |
179 | DF | ROTOR HAVING FLOW CONFINING OR DEFLECTING WEB, SHROUD OR CONTINUOUS PASSAGE {4} |
189 | DF | .~ Axially extending shroud ring or casing {4} |
193 R | .~.~ Spaced inwardly of impeller periphery {1} | |
193 A | DF | .~.~.~> Root platforms |