It's all about flexibility.
Threaded bulkheads give you much more flexibility, if you want to change things later, you unscrew it and do your change. If you use a slip, and later you want to change it, you must get out a saw and cut.
I always use threaded whenever possible. If I can't, then I try to ad unions to ease in taking PVC apart.
below is a union
If I need to clean out the pump, it can easily be unscrewed and the rest of the plumbing is not bothered.
Pacu mom gave you an excellent explanation of bulkheads and how to use them.
Threaded bulkheads give you much more flexibility, if you want to change things later, you unscrew it and do your change. If you use a slip, and later you want to change it, you must get out a saw and cut.
I always use threaded whenever possible. If I can't, then I try to ad unions to ease in taking PVC apart.
below is a union
If I need to clean out the pump, it can easily be unscrewed and the rest of the plumbing is not bothered.
Pacu mom gave you an excellent explanation of bulkheads and how to use them.
