Purpose of in drain fixture?

27 Sep 2021
Reaction score
United Kingdom
Hi, my back garden drain takes the discharge from two household waste pipes and a rain water downpipe. Inside the drain there is a hole that seems to be the same size as the rainwater downpipe. My question is - could it be the case that the rainwater downpipe should be slotted into this hole (see picture of the orange in-drain fixture with the hole in it)? I know there is a soakaway in the garden as I've found the pipe, so I'm concerned that household waste is getting into the soakaway due to the rain water downpipe no longer being fitted into the in-drain hole, to both take rain water to the soakaway and prevent household waste from entering the soakaway. Any thoughts or knowledge on this would be very much appreciated. It's a typical 1930s terraced house in SE London.
Sponsored Links

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local