Guide to Access Junctions, Pipes, Anti-Flood Gullies and Back Traps

Important Components in Commercial Drainage


Commercial drainage systems are made up of multiple components, each with a specific function. Access junctions, access pipes, check here anti-flood gullies and here back traps all support in keeping the system operational and robust over time.



Joining Multiple Lines


Access junctions link several pipes and create entry points for maintenance. Located at planned positions, they make easier fault finding and resolving blockages. Without them, upkeep in complex networks would be difficult.



Keeping Access Simple


Access pipes are vertical sections that allow direct entry into the system. Installed at regular points, they allow professionals to clear obstructions and carry out routine checks. They can also act as emergency points, reducing the chance of wastewater causing issues indoors.



Keeping Water Under Control


Anti-flood gullies stop surface water overwhelming drains. Useful in areas with frequent heavy rain, they ensure water flowing in the right direction, minimising the risk of overflow. For businesses, this helps protect property.



Keeping Wastewater Moving Correctly


Back traps work as barriers to block wastewater reversing back into the network. Placed in critical positions, they support hygiene, reduce odours, and avoid contamination inside commercial areas.



Frequently Asked Questions (FAQs)



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  • What is the purpose of access junctions?
    They help locate and fix blockages quickly.

  • Why are access pipes fitted?
    They provide vertical access points.

  • How do anti-flood gullies work?
    They prevent surface water entering the system.

  • What is a back trap?
    It ensures waste moves in one direction only.

  • Are anti-flood gullies suitable for wet climates?
    Yes, they are designed for flood-prone conditions.



Key Details


Drainage in commercial properties relies on a combination of components. Access junctions, access pipes, anti-flood gullies and back traps each help keep systems efficient. Whether planning new systems, these parts reduce risk and safeguard property. For professional advice and products, contact Knowles Drainage.

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