What Does Cv Mean Valve

What is the Cv and Kv of a control valve. The metric equivalent of Cv is Kv which is defined as the amount of water that will flow in m3hr with 1bar pressure drop.

Control Valve Sizing Fluidflow Fluidflow

What is Flow Coefficient Cv.

What does cv mean valve. It is defined as the flow rate in US Gallons per minute gpm of water at a temperature of 60 fahrenheit with a pressure drop across the valve of 1 psi. Kv-value The Kv-value is a parameter defining the flow rate of valves. The standard equation for a valves capacity in liquid service is.

Ad Create a professional resume in just 15 minutes Easy. The Cv that is calculated by the sizing program is the actual Cv that is needed to pass the full amount of flow. Cv is the flow coefficient in imperial units.

The Cv tells you how to properly size your valve so it has minimal effect on the hydraulic efficiency youve engineered into your system. It applies to the factor of the head drop Δh or pressure. Pertain to achieving a specific flow performance and specifically the flow coefficient Cv as it relates to valves.

Q is the flowrate gpm. Download a Free Perfect resume. This assumes there is no flashing or cavitation of the fluid.

Gallons per minute of water at 60F that will flow through a control valve at a specified opening when a pressure differential of 1psi is applied across the valve. However when using the actual Cv the valve will be required to operate completely open at 100 capacity in. Cv is the valve Cv.

The Kvs-value describes the Kv-value when the valve is 100 open. Cv Empirical Explanation and More. The ugly part is that when the pressure drop exceeds a certain value then the valve chokes which means really no more than the flow is not as much as predicted by the non-choked equation and you have to do more math.

Cv and Kv are 2 coefficient allowing to relate the pressure drop through a valve to the flowrate of fluid going through. It describes the amount of water from 5 to 30C which flows through the valve at a pressure loss of 1 bar. It is a number published by the valve manufacturer that describes the number of US.

They have very similar meaning but not exactly the same definition. The Cv or flow coefficient of the valve plays a much larger part in the valves performance than determining how many GPM gallons per minute can pass through the valve. It is technically defined as the volume of water at 60F in US gallons that will flow through a valve per minute with a pressure drop of 1 psi across the valve.

Download a Free Perfect resume. In more practical terms the flow coefficient Cv is the volume in US gallons of water at 60 F that will flow per minute through a valve with a pressure drop of 1 psi across the valve. The Cv Calculated is the actual Cv required.

What is the Cv and Kv of a control valve. The definition of Cv is the number of GPM Gallons per minute that will pass through the control valve with a pressure drop of 1psi. When sizing for the following valve types the figure should be divided by.

Cv by definition is the number of gallons per minute GPM a valve will flow with a 1 psi pressure drop across the valve. What is the CV value of a valve. A valve that is sized correctly is a valve that is quiet has accurate flow control lasts beyond its expected life span and does not leak.

The valve flow coefficient Cv is the number of US. The Cv is the number of US gallons of water the valve will pass with a differential pressure of 1 psi. Kv 0865 Cv.

But once you have calculated a Cv required you can grab a valve with that Cv and expect it to flow about what you require. Control valve Cv refers to the flow coefficient of the valve. Cv and Kv are 2 coefficient allowing to relate the pressure drop through a valve to the flowrate of fluid going through.

Ad Create a professional resume in just 15 minutes Easy. Through the valve in gallons per minute GPM SG is the specific gravity of the fluid and ΔP is the pressure drop in PSI through the component. Valve Flow Coefficient Cv is a valves capacity for a liquid or gas to flow through it.

Many manufacturers around the world have adopted Cv as the standard value to express the flow capacity of their components. Cv is commonly called the flow coefficient and Kv is commonly called the flow factor. For example a valve with a Cv of 10 will flow 10 GPM with a 1 psi pressure drop.

Cv the coefficient of flow is one standard for expressing the flow capacity of devices used in a pneumatic system. Gallons that can pass through a valve in a fully open position at a pressure drop of 1 PSI. Cv is commonly called the flow coefficient and Kv is commonly called the flow factor.

Control Valve Cv What It Means And How To Calculate It Visaya