A Flow Coefficient (Cv) is a relative measure of the fluid flow efficiency that is a designing factor which relates head drop (Δh) or pressure drop (ΔP) across the valve with the flow rate (Q). The Cv is the number of gallons of water per minute (gpm) will flow through a valve or any other restricting device at a temperature of 60ºF with a pressure drop across the valve of 1 psi. (Cv = 1.156 * Kv). (Refer to the Flow Factor (Kv))
Related Definitions in the Project: The Property and Unit
