160mm x 110mm Drainage Level Invert Reducer Single Socket
160mm underground drainage fitting for high-capacity foul and surface water systems. Suitable for connecting pipes and fittings. Level invert reducer maintains pipe fall when connecting different sizes.
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Product Overview
160mm underground drainage fitting for high-capacity foul and surface water systems. Suitable for connecting pipes and fittings. Level invert reducer maintains pipe fall when connecting different sizes.
Delivery & Returns Information
How Our Delivery Works
We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery Areas & Charges
Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, FK, KW, IV, LA, LD, LL, NP, PA, PH, SA, SY
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.
Standard (Nationwide) Delivery
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £10 ex. VAT |
| Over £300 ex. VAT | FREE |
| Insulation, Plasterboard and Drylining Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £350 | £35 ex. VAT |
| Over £350 ex. VAT | FREE |
| Screws & Fixings and Adhesives & Sealants | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £50 | £5 ex. VAT |
| Over £50 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{mediation}} Connects different pipe sizes within one drainage system
- {{all_out}} Integrated push-fit sockets
- {{linear_scale}} Allows direct connection into a larger 160mm drainage run
- {{water}} Maintains a consistent invert level
Technical Specification
| Material Type: | PVC |
|---|---|
| Sales Unit: | Each |
| Manufacturer's Reference: | D99 |
| Colour: | Terracotta |
| Diameter: | 160mm |
| Style: | Single Socket |
Product Overview
160mm x 110mm level invert reducer with a single socket connection, designed for underground foul and surface water drainage systems.
This fitting reduces pipe size from 160mm to 110mm while maintaining a consistent invert level, ensuring that pipe gradients and flow efficiency are not compromised.
Manufactured from durable uPVC to BS EN 1401-1 standards, the reducer provides a watertight push-fit joint for plain-ended pipework.
The single socket design allows direct connection into a larger 160mm drainage run without requiring additional couplers.
Level invert reducers are particularly useful in systems where a smaller branch line must connect seamlessly into a high-capacity main drain, ensuring smooth transitions and reliable hydraulic performance.
Features & Benefits
- uPVC construction: Strong, durable, and resistant to ground chemicals, rot, and corrosion.
- Level invert design: Maintains correct pipe fall and flow performance when reducing size.
- Size compatibility: Connects 160mm drainage runs to 110mm pipework.
- Single socket fitting: Accepts a plain-ended 110mm pipe directly into the reducer.
- Watertight seal: Integrated push-fit gasket ensures leak-free joints.
- Lightweight handling: Easy to transport, position, and install on site.
Applications
- Size reduction: Transitions from a 160mm main drain to a 110mm branch while maintaining invert levels.
- Foul drainage: Connects smaller sewer lines into larger mains without affecting flow.
- Surface water systems: Links rainwater or stormwater pipes of different diameters.
- System integration: Enables mixed-diameter layouts in residential or commercial drainage networks.
- Hydraulic efficiency: Prevents step changes in invert levels, reducing the risk of silt build-up.
Installation Guidance
- Preparation: Cut and chamfer pipe ends, ensuring smooth surfaces before jointing.
- Connection: Insert the 110mm plain-ended pipe fully into the socket seal.
- Alignment: Ensure correct gradient is maintained throughout the drainage run.
- Bedding: Place the reducer on compacted granular material for full support.
- Backfilling: Surround with granular fill before final backfill to protect the joint.
Compliance & Performance
- Standard: Manufactured to BS EN 1401-1.
- Size: 160mm x 110mm reducer.
- Type: Level invert, single socket.
- Material: Unplasticised PVC (uPVC).
- Applications: Suitable for underground foul and surface water drainage systems
- Performance: Maintains invert level while reducing diameter for smooth flow.
- Durability: Resistant to corrosion, chemicals, and long-term ground exposure.
