Brett Martin 110mm 87½° Triple Socket Branch

The Brett Martin B4081 is a premium, high-impact 110mm triple socket underground drainage equal branch. Featuring a precise 87.5° angle to support optimal gravity flow rates and a market-leading captive rubber seal, this reliable PVCu junction allows for the seamless connection of three standard 110mm pipes in foul water or rainwater drainage systems.

Key Features & Technical Specifications

•  Brand / Manufacturer: Brett Martin
• Part Number (MPN): B4081
• Barcode (EAN): 5013766020309
• Size: 110mm diameter (Equal connection across all three sockets)
• Angle: 87.5° (Often referred to as 87½ degree)
• Material: Durable, impact-resistant PVCu
• Joint Type: Push-fit triple socket with captive rubber seals
• Standards & Certifications: Kitemarked to BS EN 1401-1 / BS EN 13476-2 for absolute trade reliability.Manufactured under an ISO 9001:2015 quality management system.
• Application Area: Commercial and residential underground foul water, sewer networks, and rainwater drainage systems.

The triple-socket layout permits the intersection of two lateral 110mm pipelines into a single main run. It incorporates an 87.5° angle to maintain continuous, natural flow rates while drastically reducing the risk of subterranean blockages or sediment build-up.

Leak-Proof & Installer-Friendly Design

Designed with the installer in mind, the B4081 features Brett Martin’s market-leading captive lip and compression seals. These integrated rubber gaskets are locked tightly in place to prevent accidental dislodgement or rolling during push-fit assembly, guaranteeing a completely watertight and root-resistant joint that lasts for decades

Technical Specifications Table

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