Control Valve Sizing
Control Valve Sizing
(OP)
Just looking for a quick peer check on this. I am looking to control flow to 3500 GPM (this is for a new installation of a air separation vessel on chilled water system). I did some quick calcs and it appears I may need to use a 6 inch control valve since 12" and 8" seem too large. Does this seem logical?





RE: Control Valve Sizing
RE: Control Valve Sizing
RE: Control Valve Sizing
RE: Control Valve Sizing
RE: Control Valve Sizing
I also checked a similar configuration using real data from a side stream filter on the same system (I have actual data for dP, flow rate, and % open on the control valve). When I used the same method to calculate what the flow rate should on that system, I got 1948 GPM versus 1952 measured at the flowmeter (0.2% difference).
RE: Control Valve Sizing
RE: Control Valve Sizing
The logic is accessible, and it includes documentation.
RE: Control Valve Sizing
Thanks for the link, but I have since written my own valve sizing program in excel, which is what I'll use going forward.
RE: Control Valve Sizing