- Joined
- Oct 3, 2002
- Messages
- 12,297
Sorry, didn't see this earlier. Like Stacy said, no orifice. Just a 1/4" nipple.
Burner pipe size isn't real critical. I believe the big vertical is 2" & the small one is 1-1/2" I also use a cast iron bell reducer on the burner end, reduce one size smaller. This creates a little back pressure and the cast holds up well.
Both mine are insawool, coated with satinite. I get a good 4-5 years of heavy use before it needs relined. Flux falls to the bottom and doesn't mess with the sides much.