Rocknroj
Member
I have these yellow knock out test caps for my waste lines.. They seem to fit pretty snugly.. Are they supposed to be glued in to handle the water test? If so, then why are the called knock out? Or can you actually remove them after the test even if they have been glued?? Or do I need to plan to cut off the ends of my pipes where the caps are installed?
Thanks?
Thanks?