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).

Upgrade your underground drainage system with the Brett Martin 450mm Inspection Chamber Base (B5494).Engineered for civil contractors, groundworkers, and domestic installations, this 5-inlet chamber base provides a durable and easily accessible junction point for non-adoptable 110mm pipework.

Manufactured in the UK from high-impact polypropylene, the B5494 combines lightweight handling with extreme structural strength.Its optimized internal channel design guarantees maximum fluid flow, preventing clogs and standing water. Equipped with flexible push-fit joints and Brett Martin’s factory-fitted, captive seal technology, the unit ensures watertight integrity that won't dislodge during pipe insertion.

Whether building a new extension or updating surface drainage, this versatile base simplifies inspection, cleaning, and rodding access

Technical Specifications

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