Thanks. I’ll prob put the new valve in the same place as the old for simplicity.I usually don’t wait long after using primer and cement when making changes to running tanks. Maybe 10 minutes at the most.
I also built the drain away from the tank and not in place since I only had a straight shot of pipe to worry about so the change was quick to the new drain in this case. But some will say wait 24 hours to fully cure, but I’ve never done that personally and haven’t seen an issue.