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

Main Elements of Drainage in Commercial Premises


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



Joining Multiple Lines


Access junctions join several pipes and create entry points for checks. Located at strategic positions, they streamline fault finding and removing blockages. Without them, upkeep in complex networks would be time-consuming.



Keeping Access Simple


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



Flood Protection


Anti-flood gullies block surface water overwhelming drains. Useful in areas with frequent heavy rain, they maintain water flowing in the right direction, reducing the risk of overflow. For businesses, this helps limit downtime.



Preventing Backflow


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



Frequently Asked Questions (FAQs)



  • What is the purpose of access junctions?
    They link multiple pipes and provide entry for inspections.

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

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

  • What is a back trap?
    It prevents wastewater flowing back.

  • 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 installing fresh systems, these parts limit risk and protect property. For professional advice and products, get in touch with Knowles Drainage.

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