Access Junctions, Pipes, Anti-Flood Gullies and Back Traps Explained

Essential Features for Business Drainage


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



Linking Pipework Together


Access junctions join several pipes and provide entry points for inspections. Located at appropriate positions, they streamline fault finding and clearing blockages. Without them, upkeep in complex networks would be difficult.



Keeping Access Simple


Access pipes are vertical pipes that allow direct entry into the system. Installed at set points, they make it easier to remove obstructions and carry out routine checks. They can also double up as safety valves, reducing the chance of wastewater causing issues indoors.



Flood Protection


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



Preventing Backflow


Back traps function as barriers to prevent wastewater reversing back into the network. Placed in important positions, they help hygiene, limit odours, and avoid contamination inside commercial areas.



Frequently Asked Questions (FAQs)



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

  • Why are access pipes fitted?
    They make clearing blockages more efficient.

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  • How do anti-flood gullies work?
    They stop flooding during heavy rainfall.

  • 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 industrial properties relies on a series of components. Access junctions, access pipes, anti-flood gullies and back traps each maintain systems operational. Whether installing fresh systems, these parts limit risk and protect property. For professional advice and products, contact Knowles Drainage.

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