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 specific function. Access junctions, access pipes, anti-flood gullies and get more info back traps all assist in keeping the system operational and robust 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 removing blockages. Without them, upkeep in extensive networks would be difficult.



Providing Entry for Inspections


Access pipes are vertical sections that permit direct entry into the system. Installed at specific points, they help to remove obstructions and carry out routine checks. They can also double up as overflow outlets, reducing the chance of wastewater causing issues indoors.



Flood Protection


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



Keeping Wastewater Moving Correctly


Back traps work as barriers to stop wastewater reversing back into the network. Placed in key positions, they help hygiene, limit odours, and stop contamination inside commercial areas.



Frequently Asked Questions (FAQs)



  • 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 make clearing blockages more efficient.

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  • How do anti-flood gullies work?
    They keep drains flowing without backflow.

  • 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, consult Knowles Drainage.

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