Regulating pneumatic valve CV value calculation formula of < / div >

regulating pneumatic valve CV value calculation is generally accepted in industry knowledge, more than 10 years ago and now have comparable, because previous knowledge need to use the square root calculation results, the knowledge is software, has a software can be directly obtained results, but calculating regulating pneumatic valve CV value software also need to know some data to calculate, is must know the following data, be short of one cannot CV value calculation, calculation of regulating pneumatic valve CV value necessary data: pneumatic valve diameter, pneumatic valve pressure, working medium, the use of temperature and pressure before pneumatic valve, pneumatic valve after pressure, flow, know the above information, the small make up will attach a picture of a regulating pneumatic valve CV value calculation formula, you can refer to see you then.

here said the CV value of knowledge points for your reference, in fact, why to calculate CV value, because the CV value and the choice of pneumatic valve is of certain importance, CV value indicates that equipment in the fully open position adjust the flow coefficient of pneumatic valve, pneumatic valve to regulate different medium ( Liquid, gas) Has a different formula, said the first liquid, medium for liquid coefficient is defined as in 60 ℉, pressure will be 1 psig yes water, unit is gallons per minute, relative to the proportion of water in the standard temperature 60 ℉ ( The proportion of water = 1. 0@60℉） Gallons per minute, the liquid flow. （ 流量) , so what's the CV value calculation formula of liquid? There should be a square root data here, but really play not to come out, everyone needs! And CV value calculation software, now don't need so complicated to understand square root, only need to know the data input system, the system will automatically calculate the data to you. To adjust the pneumatic valve for the gas medium, the coefficient is defined as the standard under the condition of each 1 psig inlet pressure of the air flow, the unit for the standard cubic feet per minute, the proportion of gas relative to the air, Is equal to the ratio of gas molecular weight and molecular weight of air. （ The proportion of air = 1. 0@60℉） , the gas flow standard cubic feet per minute ( SCFM) Small make up, too professional data do not understand, so can only say that some data is known to all, hope you can help everyone know this knowledge.