I'm making some changes to my above grade plumbing near the pump. Realizing that if I have to cut sections out too many more times, I'll be short on pipe to attach new couplings and sections to. So, I'm thinking about installing either male/female adapters or unions. This way, if I need to remove a section later, I can just screw in the replacement section without shortening my remaining pipe.
1. Is this a bad idea?
2. Which is more reliable, a pair of male/female adapters, or a union?
Also, I've been considering using some flexible pvc hose for one section where getting an exact fit with the rigid pvc is going to be especially tricky. Any special advice for gluing it to PVC couplings?