Originally Posted by Mr. Bo
May be but I'm gonna try without it and see if it gets the temps up in the drum. I have to get this figured out.
Mr. Bo, what size and how many are your intake holes?
For running at 225 you ought to have 0.66 square inches opened. If you are using holes that measure out to 3/4 inches, that's 1 fully opened and another one half way opened. I did read on this post recently that some ball valves might read as 3/4 inch ball valves but somehow actually have a smaller opening.