CV value is the English word Circulation Volume
The abbreviation of flow volume and flow coefficient originated from the definition of valve flow coefficient in the field of fluid engineering control in the West.
The flow coefficient represents the flow capacity of the element to the medium, specifically for the valve, that is, the volume flow (or mass flow) of the pipeline medium flowing through the valve when the pipeline maintains a constant pressure within a unit of time.
In China, the KV value is usually used to represent the flow coefficient, which is also the volume flow (or mass flow) of the pipeline medium flowing through the valve when the pipeline maintains a constant pressure per unit time, because the pressure unit and the volume unit are different. There is the following relationship: Cv =1.167Kv
Post time: Aug-31-2023