Thanks TBP and 74Elsinore.
I like the fact that the thread depth is ok from TGP but I also wondered about 8" screwed pipe. We are using ductile iron (dip) in this project so butt welds may not be an option. Or is it? We have layed out two flanged dip reducers to get to the 8"...
Given: Flanged discharge piping in high service potable water plant. Discharge piping is 30" and at 130 psi. Surge valve at end of run is 8". Desire is to install surge valve using 8" piping etc... We can get a 30" blind flange tapped for 8" pipe.
Question: Can we...