Description
The
160mm to 110mm drainage Y branch is an unequal underground drainage fitting designed to connect a 110mm branch pipe into a larger 160mm main drainage run. This
160mm 110mm unequal Y branch uses a
45 degree drainage branch layout with a practical
double socket drainage branch configuration, creating a reliable
160mm to 110mm pipe junction for compatible foul-water and surface-water drainage systems. The 45° Y configuration introduces the smaller branch into the main drainage run at a shallower angle than a near-90° T branch, making it useful where the drainage layout benefits from a more gradual directional connection.
160mm to 110mm Drainage Y Branch
The
160mm to 110mm drainage Y branch is designed for installations where compatible 110mm drainage pipe needs to join a larger 160mm underground drainage run. The unequal configuration keeps the main line at 160mm while providing a smaller 110mm branch connection.
Choosing a 160mm to 110mm Drainage Y Branch
Choose the
160mm to 110mm drainage Y branch where the main underground drainage pipe is 160mm and the incoming branch is 110mm. Check that all adjoining pipework and fittings are dimensionally compatible before installation, particularly where components from different drainage systems are being combined.
160mm 110mm Unequal Y Branch
The
160mm 110mm unequal Y branch differs from an equal branch because the side connection is smaller than the main drainage run. This makes the
160mm 110mm unequal Y branch particularly useful on larger domestic, commercial and groundwork drainage systems where individual 110mm lines need to connect into a 160mm main.
160mm 110mm Unequal Y Branch Applications
The
160mm 110mm unequal Y branch can be used for suitable applications including foul-water drainage, surface-water drainage, property connections and drainage alterations.
45 Degree Drainage Branch
The
45 degree drainage branch introduces the smaller pipe into the larger drainage run at a gradual angle. A
45 degree drainage branch can provide a smoother directional transition than a near-right-angle branch, depending on the layout of the drainage system.
Using a 45 Degree Drainage Branch
When positioning a
45 degree drainage branch, consider the direction of flow, pipe fall and available installation space. The branch should be orientated correctly within the drainage run and supported by suitable bedding before the trench is backfilled.
Double Socket Drainage Branch
This fitting uses a
double socket drainage branch configuration for compatible ring-seal underground drainage connections. The
double socket drainage branch design allows the fitting to be incorporated into the drainage system without requiring additional separate sockets at both socketed connections.
Installing a Double Socket Drainage Branch
Before assembly, check that the seals within the sockets are correctly seated and free from grit, dirt or damage. Use suitable underground drainage lubricant where required and insert prepared pipe or spigot ends squarely into each socket without displacing the ring seals.
160mm to 110mm Pipe Junction
The fitting creates a practical
160mm to 110mm pipe junction wherever a smaller drainage line needs to enter a larger underground system. A
160mm to 110mm pipe junction is commonly required where individual 110mm drains discharge into a larger 160mm main drainage run.
Installing a 160mm to 110mm Pipe Junction
When installing a
160mm to 110mm pipe junction, make sure the adjoining pipework is correctly aligned and supported so unnecessary loading is not transferred into the branch fitting.
160mm to 110mm Drainage Y Branch Installation
Before fitting the
160mm to 110mm drainage Y branch, make sure all connecting pipe ends, sockets and seals are clean and undamaged. If pipe needs to be cut, make a clean square cut, remove burrs and chamfer the pipe end where required to protect the ring seal during assembly.
PVC-U Underground Drainage Fitting
This type of branch is manufactured for compatible PVC-U non-pressure underground drainage systems. PVC-U provides a lightweight, corrosion-resistant solution commonly used for foul-water, surface-water and general gravity drainage installations.
BS EN 1401 Underground Drainage
The underlying fitting specification conforms to BS EN 1401-1 for PVC-U non-pressure underground drainage and sewerage systems. This standard covers compatible below-ground pipework and fittings intended for gravity drainage applications.
Foul-Water Drainage Applications
The fitting can form part of a suitable foul-water system where a 110mm drainage line needs to feed into a larger 160mm main run. The overall system should maintain appropriate falls, bedding and maintenance access throughout the installation.
Surface-Water Drainage Applications
This unequal Y branch can also be used within compatible surface-water and rainwater drainage layouts where the specified pipe sizes and connection angle suit the installation.
45° Y Branch vs 87.5° T Branch
A 45° Y branch introduces the connecting pipe into the main drainage run at a shallower angle than an 87.5° T branch. The correct fitting depends on the drainage route, flow direction, available space and overall system design.
Unequal Y Branch vs Equal Y Branch
An unequal branch connects pipes of different nominal diameters. This fitting uses a 160mm main run with a 110mm branch connection. If both the main run and branch are 160mm, choose a 160mm equal Y branch instead.
160mm to 110mm Drainage Y Branch Applications
The
160mm to 110mm drainage Y branch is suitable for compatible applications including:
- Connecting 110mm drainage into a 160mm main run
- Foul-water underground drainage
- Surface-water drainage
- Rainwater drainage systems
- Domestic groundwork
- Commercial drainage systems
- Property drainage connections
- Drainage repairs and extensions
- New underground drainage installations
160mm to 110mm Drainage Y Branch Key Features
- Main drainage pipe size: 160mm
- Branch pipe size: 110mm
- 45° Y branch configuration
- Unequal branch design
- Double socket connection
- PVC-U underground drainage fitting
- Suitable for compatible gravity drainage
- Suitable for foul-water applications
- Suitable for surface-water applications
- Suitable for domestic and commercial drainage projects
Shop 160mm Underground Drainage
Browse our complete
160mm Underground Drainage range for pipes, bends, branches, couplers, reducers and access fittings. You can also browse our wider
Underground Drainage range for additional pipe sizes, chambers, gullies and drainage fittings. This
160mm to 110mm drainage Y branch combines a practical
160mm 110mm unequal Y branch layout with a
45 degree drainage branch,
double socket drainage branch connection and versatile
160mm to 110mm pipe junction.
