Flow Control Valves - Help for Mech Engg Student

[venkatr56]

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 ...

 

[FredGarvin]

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

 

[Artman]

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"