2. Is there any specific definition for standard (reduced) & full port valve mentioned in any of the valve design standards?
3. Is it a common practice to select full port valve as one size higher reduced port valve or is it by some sort of standard (kindly indicate the standard)?
e.g. 3/4" full port valve = 1" reduced port valve
hence, port diameter of full port valve = port diameter of reduced port valve (Here I assume that standard or reduced port diameter is indicated in valve design standards).
4. Is pressure drop is the only consideration for selecting full port valve? pigging or blowdown, I assume may be the other reasons for selecting it?
5. Is the concept of full port valve is applicable to all type of valves e.g. butterfly, needle,check, Diaphragm etc. or is it limited to some specific valves like gate (full port by default I assume ),globe etc.
Thanks & regards
p.S : Standard port refers to Reduced port.
Edited by danish, 25 May 2011 - 03:37 AM.