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Answer Posted / nanjilll
Characteristics of control valve:
1. Quick opening => Large change in flow for a small change in Valve travel.(eq. 50% opening gives 90% flow).Usually used as on/off valve
2. Linear => change in flow rate is directly proportional to the change in valve travel(40% flow for 40% valve travel)
3. Equal percentage => not linear but logirthemic variation.
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