Calculate pressure drop using workbench
 

Hi
I am working on a project which involves modeling a valve on workbench. my knowledge of using workbench is fairly basic and i was wondering out anyone be able to tell me how to obtain results for the pressure drop through the valve. i am able to mesh the valve and carry out CFX on said mesh but i am at a loss as to how to find the pressure drop.. any help would be greatly appreciated thanks in advance..