I have similar problems with this as smh345. Normally I work in the European tradition with nominal pressure (PN). Now, I could have a system that should be designed for 27 bar and 80 °C. On the first hand one would select PN 40. But then when additional corrosion allowance is required, I feel...
Thank you for your reply, Svanels. Although the purpose of a control valve is to adjust resistance in a fluid cycle, I most often find that the resistance of a globe valve is to big. Ball valves and butterfly valves have higher kv-values. However, the dealers keep telling me that I should select...
When looking at characteristics of various types of valves it seems to me that butterfly valves are superior to other types regarding control applications. The control range is wider (0.5 < gain < 2.0) than for both ball and ball sector types.<br>
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Can anybody explain me why I...
