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 various components, each with a defined function. Access junctions, Access pipes access pipes, anti-flood gullies and back traps all support in keeping the system operational and reliable over time.



Linking Pipework Together


Access junctions connect several pipes and create entry points for inspections. Located at appropriate positions, they make easier fault finding and removing blockages. Without them, upkeep in large networks would be time-consuming.



Making Maintenance Straightforward


Access pipes are vertical sections that enable direct entry into the system. Installed at regular points, they help to clear obstructions and carry out routine checks. They can also double up as safety valves, reducing the chance of wastewater causing issues indoors.



Keeping Water Under Control


Anti-flood gullies prevent surface water overwhelming drains. Practical in areas with frequent heavy rain, they ensure water flowing in the right direction, avoiding the risk of overflow. For businesses, this helps limit downtime.



Keeping Wastewater Moving Correctly


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



Frequently Asked Questions (FAQs)



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

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  • 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 helps maintain hygiene by stopping reverse flow.

  • Are anti-flood gullies suitable for wet climates?
    Yes, they are effective where heavy rainfall occurs.



Key Details


Drainage in commercial properties relies on a set of components. Access junctions, access pipes, anti-flood gullies and back traps each maintain systems efficient. Whether installing fresh systems, these parts limit risk and secure property. For professional advice and products, get in touch with Knowles Drainage.

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