# What does CV stand for on a valve?

## What does CV stand for on a valve?

Valve Flow Coefficient

## Does pipe size affect pressure?

Increasing the pipe diameter won’t change the static pressure (the pressure when no water is flowing). When you open a spigot, however, the water pressure at that spigot decreases somewhat, and because a larger pipe provides a lower resistance to flow, the water pressure will decrease less with the larger pipe.

## Does reducing pipe size increase pressure?

“In a water flowing pipeline, if the diameter of a pipe is reduced, the pressure in the line will increase. Bernoulli’s theorem says that there should be a reduction in pressure when the area is reduced. The narrower the pipe, the higher the velocity and the greater the pressure drop.

## Does increasing pressure increase velocity?

Area of cross-section of the flow is inversely proportional to velocity of flow. AV= constant. As the area of cross-section decreases velocity increases . As the pressure decreases in the nozzle with increase in the velocity because they both are inversely proportional.

## Is flow rate directly proportional to velocity?

Flow is different than velocity. Velocity is defined as the distance a given fluid moves within a unit of time, most commonly expressed in centimeters per second. The flow of a fluid within a tube is related to velocity by the relationship F = V ⋅ r2, where V is the mean velocity and r is the radius of the tube.

## What is the relationship between velocity and pressure?

Pressure and velocity are inversely proportional to each other. If pressure increases, the velocity decreases to keep the algebraic sum of potential energy, kinetic energy, and pressure constant.