The design of marine engines and auxiliaries (1916)
Bragg, Edward Milton, b. 1874 · New York, D. Van Nostrand Co. · leaf 178
Fig. 87. CONDENSERS AND AIR PUMPS 159 The velocity of the air and water through the air-pumpsuction pipe should be from 10 to 15 feet per second based uponthe effective strokes of the pump. The size of the dischargepipe can be much smaller as the air is much reduced in volumewhen discharged from… … 171. Types of Air Pumps. —• Air pumps can be dividedroughly into four classes: 1. Reciprocating pumps with three sets of valves. 2. Reciprocating pumps with one set of valves. 3. Compound pumps. 4. Rotary pumps. Fig. 89 is an example of a pump of class (i), with a set of headvalves, bucket valves,…
Marine engines
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