Valve Cv (or “flow coefficient”) calculation is an important metric used in the engineering and manufacturing of valves and other flow control mechanisms. The Cv metric is used to measure the capacity for a valve or other flow control device to pass a given volume of liquid or gas per unit of time. As such, it is a useful tool for both manufacturers and engineers, providing an accurate measure of the performance of a particular piece of equipment. In this article we will explain how to calculate the Cv value of a valve, why it is important and how it can help manufacturers measure their product’s performance.