Discharge Coefficients and Steady-State Flow Forces for Hydraulic Poppet Valves

[+] Author and Article Information
J. A. Stone

IBM Corporation, New York, N. Y.

J. Basic Eng 82(1), 144-154 (Mar 01, 1960) (11 pages) doi:10.1115/1.3662504 History: Received February 02, 1959; Online November 04, 2011


Experiments were run on a poppet valve operating in hydraulic oil. The experimental values of the flow forces and discharge coefficients were about 25 per cent below the predicted theoretical values. Although there was some scatter in the values of discharge coefficients, there was good correlation for the flow forces. Flow forces are strongly influenced by the downstream configuration. The smaller the diameter of the downstream chamber, the higher the forces. A poppet configuration was designed and tested which virtually eliminated the flow forces.

Copyright © 1960 by ASME
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