By Marc L. Riveland and Andrew Kinser Depending on the methods ball valve manufacturers use to determine their published rated flow capacities, the resulting value may be different, even for virtually ...

However, conventional methods used for establishing control valve pressure drop cannot be used at face value without reviewing all plant operating scenarios.

They were then validated with testing to create the valve flow coefficient (Cv) curves of each valve size and profile (Figure 3). The profiles achieve a desirable range of flow control and inherent ...