How to select a regulating valve for mud media
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Please tell me how to select a regulating valve for special liquids such as asphalt, paint, and mud, that is, how to calculate the Cv value based on given parameters such as flow rate and pressure. I think the standards are all for Newtonian fluids, but they don't seem to be applicable to these special liquids. So how to calculate these special liquids? Can we only rely on experience?
It mainly depends on the change range of the flow rate. The valve structure can only use ball valves (V-shaped ball valves, suitable for medium conditions with small flow changes) or butterfly valves (suitable for large flow change ranges and large diameters). To calculate the actual CV value, it is necessary to clarify the process parameters. Medium temperature, name, density, maximum flow rate, minimum flow rate, normal flow rate, pressure in front of the valve, pressure after the valve (these parameters are indispensable and must be accurate, otherwise the diameter of the selected valve will be inaccurate, too large or too small, which will affect process production. )
Thank you brother, can you please provide relevant calculation formulas or reference standards? I mainly want to make a selection software, not to select a valve for a certain working condition.