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Control Valve Full Port Vs. Reduced Port


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#1 Guest_Guest_*

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Posted 12 February 2005 - 09:39 PM

I have a question regarding control valve selection. Under what conditions, we would select the full port control valve instead of reduced port? What are the differences between full and reduced ports?

Thank you very much in advance,

#2 djack77494

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Posted 19 March 2005 - 03:00 AM

Guest:
It is common for valves to have reduced ports, meaning that the minimum cross-sectional (flow) area of the valve may be significantly less than the cross-sectional area of the connecting pipes. Avoiding this through the use of "full port" valves can be an expensive proposition as full port valves often sell at a significant premium relative to reduced port valves.

So, why might you want a full port control valve? Well, it would be pretty rare that you would. About the only justification I can see for using one would be in situations where pressure drop is critical. Then, perhaps, you might not be able to tolerate the additional pressure drop that a reduced port valve would generate.

Doug




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