In this paper an approach to the dimensioning of a single stage pressure relief valve is presented. The valve in question is a pressure relief valve that is designed based on a set of typical design criteria: crack pressure, maximum flow, maximum slope of pressure flow characteristic, available space and dynamically stable. The design variables include the dimensions of the spool the shaping of the rim at and the valve spring. The performance criteria as used to formulate a set of allowable intervals for the design variables. This formulation is carried out based on a mathematical analysis of the valve including time domain simulation and CFD analysis. The latter was necessary in order to link the geometrical design variables with the flow force and flow discharge characteristics. A prototype was designed from the computed data and experimental testing verifies that the design performance, including stability, was reached.
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