1 reply to this topic

[marcoz1121]

Hi fellow forumers,

 

Currently I am doing a control valve simulation on HYSYS. I have the valve datasheet that already specified the parameters including flow, valve opening, valve CV etc.

 

I am trying to mimic the datasheet (which i know that i cant because the valve manufacturer may use their own software on sizing the valve). However, I tried to simulate the valve, and I found that at given flowrate and delta P, when I increased the valve opening, the Cv actually decreased. I thought that increasing the valve opening will lead to increasing Cv.

 

Hope I can get some insight on this. Thank you

[latexman]

It’s not perfectly clear to me exactly what you did. Was flow rate constant for all CV openings? Was dP constant for all CV openings? The way I interpret what you said, both flow rate and dP were constant for all valve openings. That sounds over-specified to me.  Can you provide more details please?