Cv Value For Ball Valve

First question is k dimensionless and the same value for calculations in us gallons/minte and litres/min.

Cv value for ball valve. This depends on how the valve has been designed to let the flow going through the valve. As the stem opens, the cv increases. With global layout and firmly foundation at asia, we are now recognized as an international brand in taiwan.

Online calculator to quickly determine valve and orifice cv & kvs values for air. The coefficient of flow or cv value of ball valves is the number of us gallons of water the valve will pass with a differential pressure of 1 psi through the valve at 60°f. Ball valve floating type for reduce and full bore.

Full port valves will have a higher cv than reduced port valves. Flow coefficients can be found in the cv column within the ball valve dimensional data tables. Such as the renault number (reynolds number), flow rate (flow), the shock (choking), the involved joints in pipes (fitting) and the other by the values of these.

Flow coefficient normally expressed as cv or kv depending on the countries. Cv [gpm] [psi] nps (inches) dn (mm)full bore: It is used to determine the appropriate sizing of the valve as well as evaluating the flow kinetic energy in regards with process and piping integrity.

The flow coefficient of a device is a relative measure of its efficiency at allowing fluid flow. In deciding the size of the control valve that (port size) we need to calculate the cv value of the process (calculated cv) by calculating cv has educated more than 50 years, which is involved in. Ball valves are an important part of the process industries.

Cv is determined by the manufacturer of the valve and can be found on the valve manufacturer's website and/or related valve data and specification sheets. Please contact us if the fluid specification requires viscosity correction. In the chart below, we show the approximate cv value of butterfly valves ranging from 2 to 24 and at various disc angles.