[an error occurred while processing this directive]
Posted by sid on February 15, 2006 at 10:33:14:
In Reply to: Butterfly valve Calculations posted by Graham on February 13, 2006 at 11:03:14:
from your valve manufactor you should get a inherent flow but to get you installed flow down to degrees open on the valve your going to have to measure the pressure drop across the valve with a manometer or like device . It should be fun to do so go too it P2-Pout is the math