Dear i want realtion between control valve opening % (like 10%,20%......100%)with flow realation equation for EQ% butterfly control valve. Is there any standard engineering for that relation.
Dear i want realtion between control valve opening % (like 10%,20%......100%)with flow realation equation for EQ% butterfly control valve. Is there any standard engineering for that relation.
I need ISA hand book on control valve
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