73 / | HD | MEASURING AND TESTING |
861 | DF | VOLUME OR RATE OF FLOW {23} |
232 | DF | .~ Expansible chamber {6} |
262 | DF | .~.~ Diaphragm or collapsible wall {2} |
269 | .~.~.~ Single diaphragm {2} | |
270 | DF | .~.~.~.~> With diaphragm actuated valve trip gear |
271 | DF | .~.~.~.~> With fluid actuated valve |