Brett Martin 110mm Vent Cowl

Key Features Summary

• Essential Drainage Ventilation: Allows foul air and sewer gases to safely discharge from the top of the 110mm soil stack while balancing system pressure.

• Protects Against Blockages: Shielded cap design stops leaves, debris, nesting birds, and rainwater from entering and clogging the pipework.

• Quick Push-Fit Installation: Features a dry-fix push-fit connection for simple, tool-free fitting onto standard 110mm (4") soil pipes.

• Weather & UV Resistant: Constructed from durable, high-grade plastic engineered to withstand UK weather conditions without fading or degrading.

• Full System Compatibility: Fully compliant with BS EN 1329 standards and compatible with other leading UK 110mm above-ground drainage systems.

   

Frequently Asked Questions (FAQ)

What does a 110mm soil vent cowl do?

A soil vent cowl sits at the top of a 110mm soil stack above the roofline. It allows trapped sewer gases to escape and admits fresh air to balance pressure, which stops water traps in toilets and sinks from being siphoned out. Simultaneously, it keeps debris, rain, and animals out of the pipe.

How is the Brett Martin BS427 vent cowl installed?

The cowl features a dry-fix push-fit connection. Simply ensure the end of your 110mm soil pipe is clean and smooth, then push the cowl firmly onto the top of the pipe until it seats tightly. No solvent cement or specialist tools are required.

Will this cowl fit other brands of 110mm soil pipe?

Yes. The Brett Martin BS427 is manufactured to BS EN 1329 standards, meaning it is universally compatible with standard 110mm (4-inch) plastic soil pipes from other UK manufacturers.

The Brett Martin 110mm Vent Cowl (BS427) is a vital terminal fitting designed to terminate open-to-atmosphere soil vent pipes safely above the roofline.By allowing air to enter and exit the soil stack freely, this vent cowl prevents negative pressure build-up and siphonage in traps, ensuring wastewater flows smoothly throughout your drainage network.

Designed with a slotted external guard, the BS427 effectively seals off the top of the stack against external hazards like nesting birds, wind-blown leaves, and debris, without restricting essential airflow.

Manufactured in the UK by Brett Martin, this 110mm vent cowl features a lightweight, robust plastic construction built to handle extreme weather exposure.Its simple push-fit mechanism guarantees a secure, hassle-free installation for both trade professionals and DIY installers.Available in multiple color finishes to match existing pipework and rooflines seamlessly.

Technical Specifications Table

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