Brett Martin 110mm Soil Pipe To 160mm Drain Connector

Key Features Summary

• Seamless Pipe Adaptation: Efficiently transitions a standard 110mm soil or waste pipe into a larger 160mm main underground drainage system.

• Level Invert Design: Keeps the bottom (invert) of both pipes at the same level to maintain consistent gravity flow and prevent sediment build-up.

• Push-Fit / Solvent Weld Compatibility: Fits directly into a 160mm ring-seal socket or spigot end while accepting standard 110mm plastic soil pipe.

• Durable uPVC Construction: Manufactured from high-grade, impact-resistant terracotta uPVC built to withstand ground pressure and chemical exposure.

• Fully Certified: Manufactured in the UK to BS EN 1401 standards for underground gravity drainage and BS EN 1329 for soil and waste systems.

   

Frequently Asked Questions (FAQ)

What does "level invert" mean, and why is it important for drainage?

A level invert adaptor is designed so the inside bottom surfaces of both the smaller (110mm) and larger (160mm) pipes sit flush with each other. This prevents water from "dropping" or pooling at the step-up point, ensuring smooth, uninterrupted flow and reducing the risk of solid waste settling and causing blockages.

How do I install the Brett Martin BS423 connector?

The 160mm end inserts directly into a standard 160mm ring seal socket or fitting using pipe lubricant. The 110mm socket end receives your incoming 110mm soil pipe. Ensure the offset/flat side of the adaptor is positioned at the bottom to keep the pipe inverts aligned correctly.

The Brett Martin 110mm Soil Pipe to 160mm Underground Drain Connector (BS423) provides a simple, reliable solution for stepping up pipe sizes where vertical soil stacks or waste lines drop down into main underground drainage channels.

Engineered with an eccentric level-invert profile, this adaptor ensures that the bottom of the 110mm incoming pipe aligns perfectly with the bottom of the 160mm outgoing drain. This offset design eliminates lip traps, ensuring wastewater and solids flow smoothly through the junction without risk of blockages or standing water.

Manufactured by Brett Martin, an industry leader in drainage solutions, the BS423 fitting features a robust terracotta uPVC construction. It is lightweight, resistant to soil chemicals and corrosion, and fully compliant with UK building regulations for both domestic and commercial drainage applications.

Technical Specifications Table

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