User friendly 110mm and 160mm system, easy to handle, impact resistant and extremely durable in use. A wide range of products and ancillary fittings tested in accordance with BS EN 1401-1: 1998 PVC-U Underground Drainage Systems
![110 and 160mm Underground](https://www.armstrongbuildingplastics.co.uk/wp-content/uploads/2023/07/kayflow-underground-110-160.jpg)
110 and 160mm Underground
A full range of pipes, bends, branches and couplers in 110mm and 160mm diameters.
![Gullys and Hoppers](https://www.armstrongbuildingplastics.co.uk/wp-content/uploads/2023/07/kayflow-underground-gullys-hoppers.jpg)
Gullys and Hoppers
Bottle Gullys, P-Traps and Hoppers for all standard foul water trap applications.
![Inspection Chambers](https://www.armstrongbuildingplastics.co.uk/wp-content/uploads/2023/07/Kayflow-Underground-Inspect.gif)
Inspection Chambers
320mm and 450mm Inspection chambers with multiple inlet/outlet points. Chamber height may be varied and each unit includes blanks for unused apertures.