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Excerpt from Notes on the Construction and Working of Pumps A pump may be defined as a machine by and through which a fluid can. Be made to flow against the action of gravitation or other opposing force. With most pumps such flow is brought about by the displacing action of a piston or plunger moving within a closed vessel provided with suitable inlet and outlet passages controlled by valves. In some cases we may have to deliver a large volume of water against but a small head, pressure, or resistance, whilst. In others there may be only a small volume of water to be delivered but a great resistance to be pumped against, and it is evident that although similar parts are to be found in pumps for these and other services, their precise construction, arrangement, and relative dimensions must vary with the nature of the work to be performed. We will, however, first consider certain laws and conditions applicable to the working of pumping machinery in general, before proceeding to discuss some typical examples in detail. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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