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.

Engineered for ultimate reliability in domestic and light commercial underground drainage networks, the Brett Martin 280mm Shallow Access Chamber Base (B2800) provides a rugged, code-compliant access point where full-depth manholes are unnecessary.

Manufactured in the UK from high-impact polypropylene, the B2800 features a 280mm diameter body with three 110mm ring seal inlets—one straight-through main channel and two 45° branch inlets. It comes complete with two removable socket plugs to securely seal off unused inlets, giving you total installation flexibility on-site. Equipped with Brett Martin’s market-leading captive lip seals, this push-fit base guarantees a watertight, leak-free connection with standard 110mm uPVC drainage pipes.

When paired with two 280mm shallow access risers (B2801) and a matching double-sealed lid, this base forms an incredibly cost-effective setup that fully complies with Building Regulations Part H1 for invert depths up to 600mm.

Technical Data Table

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