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Adding Kv or Cv values
Adding Kv or Cv when control valves are in series or parallel
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Control Valves in Parallel
The resulting Kv or Cv if two valves are installed in parallel can be calculated as
Kvt = Kv1 + Kv2 (1)
where
Kvt = resulting Kv
Kv1 = Kv valve 1
Kv2 = Kv valve 2
Control Valves in Series
The resulting Kv or Cv if two valves are installed in series can be calculated as
1 / (Kvt)2 = 1 / (Kv1)2 + 1 / (Kv2)2 (2)
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Related Topics
- Control Valves - Control Valve terminology, bodies, trim, flow characteristics, Cv and Kv sizing, noise, actuators and positioners
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