I need to repair an existing sprinkler system and run all new lines in another area. I am not going to change anything just mimic the existing piping. Can i do it in house or does this have to be done by certified sprinkler pipe fitter. Facility is in NJ
If the thread was put on the part with a lathe the threads can be "picked up" again and a few thousandths can be removed. If the two mating parts can screw together the threads might just need to be polished or cleaned up, it might have a burr.
If the part was threaded with a die most die's are...
I have had in stock for years Micarta or Garolite which i use as a bearing in a underwater agitator with a bronze sleeve. I have used up the last of my stock and am not sure what grade to use.