450mm Inspection Chamber Base 160mm/110mm Inlets
Nationwide Delivery
Tue 9 Jun
- 0days
- 14hrs
- 7mins
- 26secs
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Delivery & Returns Information
Delivery charges vary by product category and order value. Items may ship from different suppliers and arrive separately, so delivery charges can be shown per part of your order at checkout.
Standard (Nationwide) Delivery
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £25 ex. VAT |
| Over £300 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £90 ex. VAT |
| Over £400 ex. VAT | £55 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 |
How delivery works
We work with a nationwide network of trusted suppliers. Items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you will see delivery charges shown at checkout for each part of your order. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery areas
Delivery charges apply to mainland UK, excluding: AB, CA, CF, DD, DG, EH, EX, FK, KA, KW, KY, IV, LA, LD, LL, ML, NP, PA, PH, PL, SA, SY, TR, TQ and TD.
If your address is in one of these areas, we will contact you before processing your order to confirm any additional costs. We do not currently offer delivery outside the UK mainland.
What to expect on delivery day
- Deliveries are typically kerbside.
- Please ensure someone is on-site to accept delivery. For heavier items, help with offloading may be required.
- Many building materials arrive on large vehicles. If access is restricted, a specialist vehicle such as a HIAB may be required and could incur an additional charge.
Why delivery can cost more than typical parcel delivery
Building materials often travel on larger vehicles and usually carry fewer drops per run than parcel networks. That is why delivery charges can be higher than standard e-commerce shipping.
Returns
Returns depend on what you have bought and whether there is anything wrong with it. For full details on eligibility, timeframes, and exclusions, please see our full policy.
Key Features
- {{mediation}} Accepts both 160mm and 110mm pipe diameters
- {{hvac}} For reliable access and maintenance
- {{route}} Suitable for both foul and surface water drainage systems
- {{filter_tilt_shift}} Compatible with standard 450mm risers
Technical Specification
| URN: | 7001408 |
|---|---|
| Material Type: | PVC |
| Size: | 160/110mm |
| Diameter: | 450mm |
| Sales Unit: | Each |
| Manufacturer's Reference: | 6D900 |
Product Overview
450mm inspection chamber base designed for underground foul and surface water drainage systems. This component provides dependable access for inspection, cleaning, and maintenance while accommodating both 160mm and 110mm drainage pipe connections.
Manufactured from high-strength, durable polypropylene, the base ensures long-term structural integrity and watertight performance under load. Its multiple inlets allow direct connection of mixed-diameter pipework, making it suitable for system layouts where 160mm mains and 110mm branch lines converge.
Commonly used as a connection point within larger domestic and light commercial installations, the 450mm base enables straightforward transitions between different pipe sizes without additional fittings. It supports flexible system design at junctions, changes in direction, or depth variations.
Designed for use with standard 450mm risers and covers, the component forms part of a modular assembly providing safe and efficient access to underground drainage networks. Its robust manufacture and precise jointing design ensure lasting performance in a range of site conditions.
Features & Benefits
- Dual-size connectivity: Accepts both 160mm and 110mm pipe diameters for adaptable installation.
- Durable construction: Produced from high-strength polypropylene for long-term underground use.
- Multiple inlets: Allows versatile layout options for connecting main and branch drainage runs.
- Enhanced accessibility: 450mm chamber diameter provides improved access for rodding and inspection.
- Reliable performance: Suitable for foul and surface water applications in domestic and light commercial systems.
- Easy integration: Compatible with standard 450mm risers and covers for a complete chamber assembly.
Applications
- Underground drainage: Provides secure inspection access for foul and surface water systems.
- Pipe junctions: Connects multiple 160mm and 110mm pipes within a single chamber.
- Residential drainage: Suitable for larger domestic systems with mixed pipe diameters.
- Light commercial works: Used in small commercial networks requiring enhanced access points.
- Maintenance access: Enables inspection and cleaning of main and branch drainage runs.
Installation Guidance
- Excavation: Prepare excavation to suit chamber base dimensions and required invert level.
- Bedding: Position on a compacted granular bed to ensure full support and alignment.
- Pipe connection: Insert 160mm or 110mm pipes into the correct inlets using compatible seals.
- Assembly: Fit with 450mm risers and a suitable cover and frame for surface access.
- Backfilling: Surround with granular material and compact evenly in layers.
- Handling: Lift carefully to prevent damage to inlet sockets or seals.
Compliance & Performance
- Material standard: Manufactured in accordance with industry standards for underground drainage components.
- Load capacity: Designed to withstand normal ground and installation loadings.
- Pipe compatibility: Accepts standard EN 1401 110mm and 160mm uPVC drainage pipes.
- System suitability: Approved for use in foul and surface water drainage networks.
- Installation compliance: Meets Building Regulations for underground access chambers.
- Important note: Ensure correct sealing rings are used when connecting pipes of different diameters to maintain watertight performance.
