Title

The Pressure Recovery Factor

Document Type

Conference Paper

Publisher

ISA

Publication Date

4-1-1985

Abstract

The pressure recovery factor is a parameter used to calculate the maximum possible flow through a valve for a given valve opening and upstream pressure. It refers only to liquid flows, and the flow phenomena that is associated with the maximum flow is choking cavitation. The paper presents a plot of F//l versus the flow coefficient C//v for different types and sizes of valves. Test data for the valve sizes of 2 to 36 inches are included for the pressure recovery factor, F//l. The plot can be used to estimate F//l for most common types of valves, and as an aid in designing and operating control systems.

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