I have a house trap in my basement that leads to the city sewer
system. The trap is covered with two caps, but the threads in those
caps have been stripped so that they no longer seal.
Sure enough, last year the city sewer backed up due to an obstruction
under the street, and some sewage was able to seep into the basement
because the house trap caps were loose.
After cleaning up that mess, I would like to prevent it from happening
again in the future, so what is the best way to re-fit the stripped
caps to the house trap so that they are sealed?
A plumber I spoke with said that it would be impossible to find new
matching caps or re-thread the old caps, so he suggested pounding a
lead cap into the trap to seal it. Other homeowners I have spoken with
reported that they had solved the problem the same way, but it seems
like kind of a kludge to me.
Another plumber suggested installing a "Fit-All" plug that is made out
of rubber and tightened with a wing-nut, but I can't find any
reference to such as part on the web...all the "Fit-All" plugs I saw
were made out of lead, so they seem to be designed for pounding in.
Does anyone have any suggestions for the best way to refit these house