The flow capacity of a valve is calculated by the _________ Cv, the flow of water through a wide—open valve in U.S. gal/min for a pressure gradient of 1 psi. For a given nominal valve size the highest Cv is achieved with ball valves followed by (in decreasing order) gate, plug, and globe valves.

The flow capacity of a valve is calculated by the _________ Cv, the f

1.	The flow capacity of a valve is calculated by the _________ Cv, the flow of water through a wide—open valve in U.S. gal/min for a pressure gradient of 1 psi. For a given nominal valve size the highest Cv is achieved with ball valves followed by (in decreasing order) gate, plug, and globe valves.
A.	Hydraulic valve coefficient
B.	Constant for flow conditions
C.	Boltzmann constant
D.	Kraft’s constant
Answer» B. Constant for flow conditions