Frank DuVal
Senior Member
- Occupation
- Electrical Contractor, Electrical Engineer
DWV usually tested before it is connected to sewer/septic pipe.
Same devices shown cap the exit pipe for testing.
The inflatable ones can go into cleanout tees to plug the exit line also.
Same devices shown cap the exit pipe for testing.
The inflatable ones can go into cleanout tees to plug the exit line also.