In Process Dynamic Simulation using hysys , we need to enter valve Cv as per datasheet..We generally use Valve sizing chart to do this.. In this Universal Gas sizig Cv is given as per line size.. But for particular stream and valve combnation, i may inlet and outlet pressures , flows in diff units than Cv unit .. Then is it apt to use Cv in Us units when my H & MB for that stream - units are different... Suppose I may have inlet pressure in different units and also outlet pressure in diff units.. Also density in diff units other than Cv specified in valve datasheet , then sometimes Cv in US units.. so how can I apply Cv in US gallons to flow in line as per H & MB in m3.. Need some detailed inut on this...Is it just the relation factor.. and it does not matter what are inlet and outlet flows as per H & MB.. Request help from all members now..
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