Originally Posted by InTheRedZoneBBQ
Several UDS designs have 3/4" fender washers over the 3 (or 4) intake valves. My questions is why? What does this do? The 3/4" nipples screw directly into the barrel and would seem to be airtight (or very close).
I don't mind adding them, just not sure of their value...
I think they use the washer only if there hole got a little big when drilling it. Mine screw in nicely. I did use a conduit nut on both sides just to be on the safe side..