duplex pump

noun

1. a pair of direct-acting steam pumps so arranged that each pump begins its working stroke just as the other finishes its working stroke, so that the rate of flow of the fluid is nearly continuous.

Example Sentences

Duplex pump operated directly by steam 180 50.

From Project Gutenberg

In both these cases it may be a simple matter to connect a small duplex pump with the installed boiler, as is done frequently in creameries, for the sake of pumping the necessary water-supply for the house.

From Project Gutenberg

Worthington's steam pump,   duplex pump.

From Project Gutenberg