Flow Control Valves - Help for Mech Engg Student

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SUMMARY

The discussion focuses on flow control using valves, specifically for mechanical engineering students seeking clarity in fluid dynamics and thermal engineering. Key resources include Fisher's Control Valve Handbook and the Engineering Toolbox for understanding flow coefficients (Cv). The Cv value is crucial for sizing control valves, indicating the gallons per minute (GPM) of water a valve can pass for a pressure drop of 1 psi. This foundational knowledge allows for accurate flow calculations and pressure drop estimations.

PREREQUISITES
  • Understanding of fluid dynamics principles
  • Familiarity with thermal engineering concepts
  • Knowledge of control valve sizing and Cv calculations
  • Basic grasp of pressure drop calculations in fluid systems
NEXT STEPS
  • Read Fisher's Control Valve Handbook for in-depth knowledge
  • Explore the Engineering Toolbox for flow coefficient calculations
  • Research different types of control valves and their applications
  • Study the impact of pressure drop on flow rates in fluid systems
USEFUL FOR

Mechanical engineering students, fluid dynamics enthusiasts, and professionals involved in thermal engineering and valve design will benefit from this discussion.

venkatr56
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hello i am a mech engg student, i have few doubts in fluid dynamics and thermal engg subjects.. i would like to be cleared of them by this discussion forums
could anyone please explain the principle of flow control using valves...waiting for ...
 
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The area of flow control is a pretty broad area in that there are a lot of ways that the control is achieved. Can you be a little more specific with your question?

To get you started off, I would suggest looking over web sites of valve manufacturers (Fisher/Emerson, Valtek, etc...). They have tons of information.

The first and foremost thing I would suggest reading is Fisher's Control Valve Handbook. It is located here:

http://www.documentation.emersonprocess.com/groups/public/documents/book/cvh99.pdf
 
Here is another resource for Control Valve information.

Understanding "Cv" is important to sizing control valves. This is GPM of water that a valve will pass for a pressure drop of 1 psi. Once you know this, you can determine using the Cv calculations how much flow that same valve will pass at other pressure drops, or determine what pressure drop you can expect from other flows.
http://www.engineeringtoolbox.com/flow-coefficients-d_277.html"
 
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