Soil pipe non return?

[realtek]

Hi,

Yesterday I flushed to toilet only to find the bathroom had been flooded which looks like my flexible soil pipe has been eaten by a rat or something.

If I knew this was a risk I would never have used a flexible pipe!

I am planning on trying to fit a solid pipe but i didn't origiknally because the hole is quite close to the edge of the bathroom which means I need to move the toilet by a few inches.

I wondered if it was possible to buy a flexible soil pipe that had some type of non return on it with like a flap or something?

Or even an adapter that could sit between the two?

If not then its a thought for dragons den but I would rather get my toilet fixed first and then have rat for dinner.

Any advice would be good! Thanks

 

[Newboy]

non-returns available for exactly the situation you describe

http://www.mcalpineplumbing.com/wc-...-and-rodent-barrier-valve.html?id=126&cat=126

 

[realtek]

Excellent, thank you very much!

Do you know if thy are sprig operated so they can be positioned vertically or is it horizontal use only?

Thanks!

 

[Hugh Jaleak]

Horizontal use only, they're a simple hinged flap. Springs would rot very quickly in that environment. If you've got a rat that far up the drain a thin plastic flap wont stop him, he'll have gnawed through that pretty sharpish! Once the WC is fixed you need to be concentrating on getting rid of Mr Rat!

 

[Newboy]

Installed two of them about 3 years ago on a farmhouse conversion - still OK to this day

 

[ree]

Fascinating, i didn't know such a fitting existed. Interesting that previous installations have held up against rodents.

Way back in the day, pre-1950's i guess, similar metal devices were used on some lateral sewer lines (main drainage) but they fell foul of various Codes because of rusting out or the flap going solid, plus they trapped any unwary drain cleaning equipment.

Lateral "In-line" drainage traps went the same way - outlawed - because they created blockage problems.

 

[Newboy]

I was told that the reason the rats follow all the way up a lateral is because they see light (at the end of the tunnel?) - especially true where flexible pan connectors have been used

 

[ree]

That makes sense.