4" internal soil stack

[mildcheese]

My property was built in 1994, both the internal soil stacks are 4" (102mm). I need a replacement Air Admittance Valve. Does anyone know a manufacturer that makes them this size? The only ones I can find, including the one I bought, are 110mm.

I bought a 100mm / 110mm adaptator but that doesn't fit either due a lip on top of the soil stack.

Thanks

 

[Egga]

Some durgo's are 110mm OD but some are available that push inside the pipe.

Is there a manufacturers name or stamp on the existing one?

Have you tried screwfix? item 78150

HTH.

 

[mildcheese]

Hmmm - that looks promising. I'll give it a go.

Thank you.