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 multiple components, each with a clear function. Access junctions, access pipes, anti-flood gullies and back traps all help in keeping the system functional and reliable over time.



Connecting the Drainage Network


Access junctions connect several pipes and offer entry points for checks. Located at appropriate positions, they streamline fault finding and clearing blockages. Without them, upkeep in large networks would be labour-intensive.



Providing Entry for Inspections


Access pipes are vertical installations that enable direct entry into the system. Installed at set points, they help to deal with 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 block surface water overwhelming drains. Practical in areas with frequent heavy rain, they maintain water flowing in the right direction, avoiding the risk of damage. 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 key positions, they support hygiene, reduce odours, and prevent contamination inside commercial areas.



Frequently Asked Questions (FAQs)



  • What is the purpose of access junctions?
    They allow easy cleaning and maintenance.

  • Why are access pipes fitted?
    They allow straightforward inspections.

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

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

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



Final Notes


Drainage in business properties relies on a set 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 secure property. For professional advice and products, get in touch with Knowles Drainage.

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