What is difference between Nominated Cv, rated Cv & Calculated Cv.
My understanding goes like this:-
Nominated Cv:The valve CV
Calculated Cv: the Cv based on the process parameters calculation
What is MAST value & how does it affect the actuator selection for ball & butterfly valves?
As per my understanding:
MAST: MAST(Maximum allowable stem shear torque).
hence while going for the actuator selection,one can summarized as below:-
Ball valves/ Butterfly valves:
Fail to close
BTO < AST...