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Hepworth Clay – Wavin UK | Hepworth Clay

Hepworth Clay pipes and fittings can be used for the majority of drainage installations. Whether it’s domestic, adoptable, commercial or industrial drainage you are installing.

Clay’s main benefits are its durability and longevity, plus it has a good environmental profile from a raw material through manufacturing, installation, in-use to end of life. The ultimate sustainable, durable, cost-efficient and high-performance sewerage solution.

Why Hepworth Clay pipe?
  • Superior sustainability: Clay is a future-proof material, 100% natural and 100% recyclable.
  • Superior quality: Hepworth SuperSleve products are kitemarked to BS EN 295-1, have a CE mark and Declaration of Performance (DoP), and are manufactured under a quality system approved to BS EN ISO 9001.
  • Superior Strength and durability: Naturally high product strength enhances in-use performance resulting in a lifetime expectancy of over 100 years.
  • Superior jetting performance: Hepworth Clay SuperSleve pipe has a Lifetime Jetting Guarantee* 7500 psi at a flow rate not exceeding 20 gals/min held static for 5 minutes, providing a 50% higher operating pressure than the WRc requirement for clay pipes.
  • Superior chemical resistance: Clay is the perfect choice for contaminated brownfield sites as it is unaffected by effluent allowed in an adopted sewer system.
  • Superior bedding performance: We can advise on the use of recycled aggregate as bedding material for clay drainage reducing costs and environmental impact.

The Hepworth Clay Range

Clay drainage system | Hepworth Clay (wavin.com)

The Hepworth Clay drainage system comprises a range of perforated and non-perforated vitrified clay pipes supplied complete with factory-fitted push-fit flexible couplings or plain ended with separate couplings to be fitted on site. Nitrile fittings for installation in previously contaminated ground.


Bends, junctions and fittings are available in 100mm, 150mm, 225mm and 300mm diameters. Channels, gullies and Inspection Chambers available in a range of sizes.

  • SuperSleve 100-300mm clay pipes, fittings & gullies: For use in housing, adoptable, commercial, industrial, and road drainage.
  • Channels: For use in constructed manholes.
  • HepLine: Perforated land drainage system 100 – 300mm
  • Inspection Chambers: For adoptable and non-adoptable applications

Wavin OsmaDrain

Wavin UK | OsmaDrain RootSeal

Wavin OsmaDrain – the definitive and comprehensive PVC-U gravity drainage system for residential, commercial and industrial projects. One of the UK’s most trusted and leading names in plastic drainage systems.

Wavin has developed a new technology for Wavin OsmaDrain to provide added protection from trees and root ingress. Called RootSeal Technology, it uses a natural mineral additive to harmlessly repel tree roots reducing potential damage, upheaval and considerable costs – both financial and environmental. This solves a number of challenges for architects, specifiers, developers and planners.

How RootSeal Technology works
  • Inhibitor: An inhibitor is embedded in a new easily identifiable green coloured seal acting like a natural force field.
  • Pipe without RootSeal Technology: The inhibitor deters roots from penetrating the pipe or fittings by reducing the intensity of root growth around the socket and seal, while having no other impact on the roots, surrounding soil or wildlife.
Key benefits of RootSeal Technology
  • Active protection: Actively inhibits root ingress and any leaching from damaged seals.
  • Environmentally safe: Environmentally safe, with no damage to the surrounding soil, trees, or wildlife.
  • Extended system life: Can extend pipe system life and safeguards optimum performance.
  • Proven to protect: Scientifically developed, tested, and proven to be effective.
  • Fewer repairs: Mitigates the cost, upheaval and environmental impact of repairs and replacements caused by root damage.
  • No extra cost: A no-cost enhancement to the market-leading foul water drainage system.

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