This is our valve c v calculator. 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.
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Cv value for globe valve. 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. The use of this flow coefficient c v calculator leads to a standard calculation to compare valve capacities. This depends on how the valve has been designed to let the flow going through the valve.
Flow velocity regular port cv flow velocity for fully open 1 for fully open 1 ft sec water 60ºf ft sec water 60ºf 1 1 2 141 25 47 83 10 08 49 7 34 2 273 48 92 161 10 05 96 7 32 2 1 2 397 70 133 234 9. K v is the metric value of c v and is calculated as k v c v x 0 85. The v5011 and v5013 threaded valve families have ansi 150 body class rating with 50 1 rangeability in equal percentage or linear flow characteristic.
Each valve has its own flow coefficient. The mechanical characteristics moveable disc and stationary seat. Therefore the main differences between different flow coefficients come from the type of valve and of course the opening position of the valve.
Scv valve manufactures superior cast body bolted bonnet globe valves in a variety of materials trims packing types sizes 2 thru 18 and pressure classes 150 thru 2500. Valve size gate globe stop check swing check tilting disc check and lift check full port cv t pattern cv y pattern cv full port cv min. The flow coefficient for a control valve which in full open position passes 25 gallons per minute of water with a one pound per square inch pressure drop can be calculated as.
Globe valves offer the best in class size cv range and close off pressure and provide precise control in hvac applications. It allows you to calculate the flow or c v flow coefficient to make the relationship visible between the pressure drop the difference in pressure between two points in a network transporting a liquid or gas and the flow rate. Flow coefficients cv values.
Cv 25 gpm 1 1 psi 1 2. These valves are available with brass or stainless steel trim. C v varies with both style and size of valve but provides an index for comparing liquid capacities of different valves.
150 2500 size. C v flow calculator. Bolted bonnet globe valves api 623 b 16 34 class.
The coefficient of flow or c v value is the number of us gallons of water the valve will pass with a differential pressure of 1psi through the valve at 60f. Go to online calculation of the flow coefficient cv and kv.