Bowden-Smith, Edward Cyril · New York, D. Van Nostrand Company · leaf 49
tion. When full, the compressed air is automatically admittedand shut off as the contents are discharged. They are arranged in pairs, as shown on Plate X., andwork alternately or differentially, according to thevolume of the sewage to be dealt with ; but either ofthe two can be entirely shut off… … w s CENTRIFUGAL PUMPS AND EJECTORS 29 while ejector OS is filling. The automatic valve C showsthe air port closed and the exhaust open. These threevalves, A, B, C, are controlled by the slide valves in theair chests marked D, E, under full pressure from the main.These shde valves are, in turn,…
Pumping machinery
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