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 with check here a defined function. Access junctions, access pipes, anti-flood gullies and back traps all assist in keeping the system functional and reliable over time.



Joining Multiple Lines


Access junctions link several pipes and create 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 pipes that enable direct entry into the system. Installed at set points, they allow professionals to deal with obstructions and carry out routine checks. They can also act as emergency points, reducing the chance of wastewater causing issues indoors.



Defending Against Flooding


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



Maintaining Proper Flow


Back traps function as barriers to prevent wastewater reversing back into the network. Placed in important positions, they maintain hygiene, control 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.

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

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  • 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 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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