Description
The 160mm level invert reducer is an underground drainage fitting for reducing 160mm pipework down to 110mm while helping maintain a level invert through the connection. It is suitable for foul water and surface water drainage systems where a larger 160mm run needs to connect into 110mm pipework.
This Funke level invert reducer is useful on underground drainage installations, repairs and alterations where pipe sizes need to step down without creating an unnecessary internal drop. The level invert design helps support smoother flow through the reducer when installed in the correct direction.
It is a practical fitting for builders, groundworkers, landscapers and drainage installers working on larger domestic, commercial and site drainage layouts.
160mm Level Invert Reducer for Underground Drainage
The 160mm level invert reducer is used where 160mm underground drainage pipe needs to reduce to 110mm pipework. This is common where a larger drainage run connects into a smaller branch, outlet, chamber connection or existing pipe layout.
Unlike a basic concentric reducer, a level invert reducer is designed to keep the bottom channel of the pipework aligned as closely as possible. This can help maintain flow and reduce the risk of standing waste or debris at the reducer point.
- 160mm to 110mm underground drainage level invert reducer
- Designed for foul water and surface water drainage systems
- Helps maintain a smoother flow path through the size change
- Useful when reducing 160mm drainage pipework to 110mm
- PVC-U underground drainage fitting
- Brown / terracotta colour to match standard underground drainage systems
- Suitable for trade, groundwork and drainage installation use
- Use with compatible 160mm and 110mm underground drainage pipework
160mm Level Invert Reducer Installation Use
The 160mm level invert reducer should be installed as part of a properly planned underground drainage system. Before fitting, check the pipe route, fall direction, flow direction and connection points.
The larger end connects with 160mm underground drainage pipework, while the smaller end connects with compatible 110mm underground drainage pipework. Always check the fitting orientation before installation so the level invert sits correctly in the drainage run.
Make sure pipe ends are clean before jointing. If pipework has been cut to length, make a clean square cut and chamfer the cut edge before fitting. This helps protect the seal and makes the joint easier to assemble.
160mm Level Invert Reducer for 160mm to 110mm Pipework
This 160mm level invert reducer is a useful fitting when adapting between larger 160mm underground drainage and standard 110mm underground drainage. It can be used on new installations, drainage repairs, extensions and alterations where pipe sizes need to change within the system.
For best results, use suitable pipe lubricant on push-fit ring seal joints where required. Also, support the pipe and fitting correctly with suitable bedding material. Good bedding and backfill help reduce movement at the joint and protect the drainage system after installation.
The reducer should not be used to force a poor alignment between pipe runs. If the pipework does not line up correctly, adjust the pipe route or use the correct combination of bends, couplers or flexible connectors.
160mm Invert Reducer for Site Drainage Work
The 160mm level invert reducer can help keep drainage layouts neat when working between different pipe sizes. It is especially useful on projects where 160mm pipe is used for higher-capacity runs and 110mm pipework is required for smaller connections.
Always follow the site specification, Building Regulations and manufacturer guidance for drainage layout, pipe bedding, falls, jointing, testing and backfilling. Correct installation helps keep the drainage system reliable, serviceable and suitable for long-term use.
Compatible Underground Drainage Products
TWS stocks a wider range of underground drainage products for trade and site use. This includes 160mm pipe, 110mm pipe, couplers, slip couplers, bends, branches, access fittings, non-return valves, flexible connectors and drainage testing accessories.
Use this fitting with compatible underground drainage pipework from the same system where possible. This helps keep jointing simple and supports a cleaner installation.
View all 160mm underground drainage products at TWS.
Shop 110mm underground drainage at TWS.
Shop underground drainage at TWS.
For official manufacturer information, see the Funke HS® underground drainage system.
