Brett Martin 280mm Diameter Shallow Access Chamber Base

The Brett Martin B2800 is a durable, lightweight 280mm polypropylene shallow access chamber base designed for 110mm underground drainage layouts. Featuring a smooth straight-through main channel, two 45-degree side inlets, and included socket plugs, this highly adaptable base ensures efficient flow and seamless access for inspection and rodding at depths up to 600mm. Features & Benefits Code Compliant: Fully meets the stringent requirements of UK Building Regulations Part H1. Advanced Sealing: Features captive ring seals within the drainage fittings to prevent dislodgement during jointing, ensuring long-term, leak-free performance. Anti-Blockage Design: The smooth internal channel profiling optimizes hydraulic flow and minimizes the risk of debris accumulation. Installation Versatility: Includes three 110mm inlets (1 main, two 45°) plus 2 removable socket plugs to adapt to your specific pipe layout. High-Quality Build: Manufactured under a certified ISO 9001:2015 quality management system and fully tested to BS EN 13598-1 industry standards.

Brett Martin 280mm Diameter Shallow Access Chamber 185mm Riser

Key Features & Benefits Perfect Fit: Sits securely atop the 110mm shallow inspection chamber base (B2800) and integrates smoothly with double-seal covers (B2802). Watertight Integrity: Features an integrated rubber sealing ring to ensure an airtight, leak-free joint that eliminates foul odors. Anti-Deformation Body: Heavy-duty external ribbing distributes vertical load and resists underground pressure. Trimmable Design: Easily cut down to size on-site with a standard handsaw for a flush ground-level finish. Fully Certified: Manufactured in the UK under ISO 9001:2015 quality standards and compliant with Building Regulations Part H1.

Brett Martin 280mm Diameter Shallow Access Chamber Square Double Seal Lid (lid 300x300)

Key Features & Benefits Double-Seal Technology: Dual rubber seal prevents drainage odours from escaping and seals against surface water ingress. Paving-Friendly Design: 300x300mm square top simplifies paving and slab integration around the chamber. Durable Polypropylene Construction: Resistant to corrosion, impacts, and weather wear for long-lasting underground performance. Regulatory Compliance: Fully satisfies UK Building Regulations Part H1 for shallow inspection chambers (up to 600mm invert depth). Lightweight & Easy to Handle: Quick to fit for both professional contractors and DIYers. Installation Tip: Apply copper-impregnated grease to the lid retaining screws during initial installation. This prevents thread corrosion and guarantees smooth screw removal whenever inspection or maintenance is required down the line.

Brett Martin 280mm Diameter 90 Degree Chamber Base (205mm invert)

Key Features & Benefits 90° Directional Change: Ideal for routing connections at right angles while maintaining easy access for inspection and rodding. Watertight Push-Fit Seals: Engineered with high-quality ring seal sockets for a rapid, secure, and completely watertight joint without specialist tools. Part H1 Compliant: Fully meets the performance and structural criteria set out in Building Regulations Part H1 for underground drainage. Durable Construction: Manufactured from heavy-duty plastic that resists deformation, ground movement, and chemical wear. Shallow Access Ready: Pairs seamlessly with standard 280mm risers (B2801) and pedestrian-rated lids to build a complete 600mm-deep access assembly.

Brett Martin 315mm Diameter Shallow Access Chamber Base

Key Features & Benefits Multi-Inlet Flexibility: Engineered with 5 inlets (1 x straight-through main channel, 2 x 45-degree, and 2 x 90-degree branch connections) to support over 16 connection combinations.This limits the need to stock multiple different base models. Leak-Free Integrity: Outfitted with Brett Martin's market-leading captive ring seals.This design prevents seal displacement during pipe insertion, ensuring long-lasting, watertight joints. Fully Compliant: Manufactured in the UK to stringent BS EN 1401-1 and BS EN 13476-2 quality standards.When paired with compatible risers and covers, it fully satisfies Building Regulations Part H1 requirements. Ready-to-Install Kit: Supplied with 2 x socket plugs to easily and securely seal off any unused inlets, saving you a trip to buy extra parts. Durable & Lightweight: Constructed from high-strength polymer that is highly resistant to ground movement, acidic soils, and temperature fluctuations.

Brett Martin 315mm Diameter Shallow Access Chamber Riser

Key Features & Benefits Premium Ribbed Design: Built with a heavy-duty ribbed profile that prevents soil pressure deformation and keeps the unit stable underground. Watertight Push-Fit Assembly: Designed with a secure captive seal system to prevent leaks and make jointing quick and straightforward on-site. Easily Adjustable: Need a custom height? The riser can be effortlessly cut using a standard hand saw to achieve your exact required finish level. Compliant & Certified: Fully meets the requirements of Building Regulations Part H1 and is certified to BS EN 1401-1 or BS EN 13476-2.

Brett Martin 315mm Diameter Shallow Access Chamber Sealed PEDESTRIAN Lid

Key Features Airtight & Odour-Free: The integrated double-seal design prevents water ingress and successfully locks in unpleasant sewer odours. Easy Level Adjustments: Features a slightly adjustable height and tilt frame to ensure a perfectly flush finish with your finished ground level (paving, turf, or gravel). Simple Maintenance: Secures tightly with robust corrosion-resistant screws (tip: apply copper grease to the screws during installation for seamless future access!). Built to Last: Manufactured in the UK to ISO 9001:2015 quality standards, ensuring long-term structural integrity.

Brett Martin 315mm Diameter Shallow Access Chamber Sealed DRIVEWAY LID

Key Features & Benefits Driveway-Rated Strength (35kN / 3.5 Tonne): Designed to withstand everyday passenger vehicles and domestic traffic without cracking or buckling. Odor & Water Tight: Features an advanced push-fit double seal that locks in sewer smells and prevents heavy rain or surface water runoff from flooding your inspection chambers. Tilt & Height Adjustable Frame: The smart square-to-round design has an adjustable frame that can be tilted and leveled to align perfectly with the gradient of sloping tarmac, block paving, or concrete. No Specialist Tools Required: Installs rapidly with a simple push-fit connection to Brett Martin 315mm non-adoptable shallow access chambers and risers. Fully Compliant: Engineered in the UK under BS EN ISO 9001:2015 and meets all criteria for Building Regulations Part H1 (domestic drainage infrastructure).

Brett Martin 450mm Diameter Chamber Riser 325mm Invert

Key Highlights Simple Push-Fit Jointing: Fast, tool-free vertical stacking using rubber sealing rings for watertight integrity. Ribbed Outer Structure: High structural integrity designed to withstand backfill and load forces without deforming. Site-Adjustable: Easily cut down to custom heights without compromising joint functionality. Fully Compliant: Meets UK Building Regulations Part H1 standards when properly assembled. Corrosion-Resistant Plastic: Non-degrading polypropylene designed for long underground service life.

Brett Martin 450mm Diameter Chamber Base (inc. 3 socket plugs) 110mm

Key Features & Benefits 5 x 110mm Inlets: Designed with a straight-through channel plus four branch connections for ultimate layout flexibility. 3 Socket Plugs Included: Blank off unused inlets straight out of the box to prevent leaks and soil ingress. Captive Seal Technology: Secure, factory-fitted ring seals withstand jointing friction and ensure long-term, leak-free operation. Building Regs Compliant: Fully meets UK Building Regulations Part H1 standards and BS EN 13476-2 / BS EN 13598-1 specifications. Durable & Lightweight: Heavy-duty polypropylene construction resists impact, chemical corrosion, and soil deformation while remaining easy to position on-site. Depth Capabilities: Suitable for invert depths up to 1.2m (or deeper when used with a restriction reducer ring).

Brett Martin 450mm Diameter Chamber Base (inc. 3 socket plugs) 160mm

Key Features Multi-Inlet Flexibility: Equipped with 5 branch inlets (3 x 160mm and 2 x 110mm) to support complex junctions. Included Accessories: Comes with 3 socket plugs to securely cap unused inlets, ensuring a watertight seal. Reliable Ring Seals: Features integrated captive seals to ensure leak-free push-fit connections and prevent accidental dislodgement during installation. Optimized Flow: Internal benching and channel fall facilitate efficient wastewater movement, reducing the risk of blockages. Durable Construction: Manufactured in the UK from high-density PVCu/polypropylene, resistant to impact, chemical exposure, and ground movement.