Author： Kerimova L.
Publisher： Springer Publishing Company
ISSN： 0009-2355
Source： Chemical and Petroleum Engineering, Vol.42, Iss.1-2, 2006-01, pp. : 42-45
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Abstract
Pump valve test data are used in a new design of valve unit with a spherical self-adjusting surface in the body of the upper guide sleeve, which provides an increasing working life.
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