At least I think that's what it's called ! I need help in getting one.
Elderly drains (cca 70 years) which have a 90 deg bend at the end of the house alongside the road heading off to my septic tank. A broken join a metre downstream of the bend has had to be dealt with, and as there is no surface access at this point I was intending to replace the bend with plastic and put in a rodding eye. However a passing drain man (just happened to be going in next door to sort out their drains (!) , and kindly showing professional interest) has suggested there would be less work in putting in a plastic inspection chamber.
Can someone tell me please what I should be asking for and how it should be seated above the access cover in the existing 90 deg bend.
Thanks
Rob