Nice tutorial about sizing of control valves.
Control Valve terminology, bodies, trim, flow characteristics, Cv and Kv sizing, noise, actuators and positioners
Sizing and dimensions of control valves & equipment in steam and condensate systems.
Instrumentation and process control systems - design and documentation.
Flow coefficients - Cv - for typical ball valves - reduced and full bore.
Proportional, integrating and derivative process controllers.
Designing steam control valves and their Kv values.
Flow coefficients - Cv - and flow factors - Kv - for straight through diaphragm valves.
In case of a specific service - the choose of a valve may be simplified by following an established practice.
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