[Half-Inch Stud]

Originally Posted by steve25

So Half-Inch-stud given this accepted definition of “ discharge coefficient “

Please provide me with the theoretical number you think I should see in regards to the way I had my flow test set up working ?

Thanks in advance.

Assuming a sharp runner exit, centered in the 4.25" bore then 0.61 works on paper, probably not in reality. Yet 0.99 or 1.0 works in reality but not on paper.

I'd say 0.8 is defend-able. So 270/0.8. = 337 cfm