Cavitation and Flashing in Valves

🔗 Enroll in the full course here: Control Valve Sizing for Liquid Applications
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Chapter 1: Resistances in Series
Introduction to Resistances in Series
Pump Sizing Roadmap

Chapter 2: Valves
Flow Coefficient (Cv)
Cv Corrections for Viscosity and Specific Gravity
Cv and Flow Capacity at Different Pressure Drops
Converting Cv to Resistance Coefficient (K)
Inherent Valve Curve
Example of Inherent Valve Curve
Introduction to Valve Authority

Chapter 3: Valve Authority & Installed Characteristic Curve
Reviewing Valve Authority Definitions
-Valve Authority vs System Head Plot
Inherent vs Installed Characteristic Curve
Example: Estimating Pump Curve, System Curve, Valve Authority, and Installed Valve Characteristic Curve at Different Valve Openings
Expressing Valve Open Percentage vs System Head Mathematically
Impact of Operating Parameters on System Head Curve

Chapter 4: Rangeability & Turndown
Valve Rangeability
Example of Valve Rangeability
Valve Turndown

Chapter 5: Rules of Thumb for Sizing a Valve
Key Rules of Thumb for Valve Sizing: Includes Heuristics for Different Valve Openings at Different -- Operating Flowrates, Liquid Velocity, and Recommended Control Valve Pressure Drop

Chapter 6: Challenges With Sizing Valves
Common Sizing Issues
Cavitation and Flashing: What Are They, Why Are They a Problem, and How to Check if They Are -Present
Example of Checking for Cavitation and Flashing in a Control Valve

Chapter 7: Valve Selection Considerations
Valve Selection Considerations: Includes a High-Level Guide on the Typical Parameters Required for Selecting a Control Valve