Althon Headwalls are made from precast concrete for connecting pipes, culverts, and box culverts to open watercourses. To prevent erosion, the range includes models for standard, angled, rectangular, and bespoke applications, with options for factory-fitted accessories and compliance with UK water authority standards.

  • Precast concrete headwalls for pipe and culvert outfalls to open watercourses

  • Range of models for standard, angled, rectangular, and bespoke requirements

  • Factory-fitted accessories: flap valves, penstocks, handrails, gratings, ladders, and flow control devices

  • Compliant with Sewers for Adoption, Sewerage Sector Guidance, and specific water authority standards

  • Options for coloured finishes for visually sensitive sites

  • Sectional designs available for box culverts and steep banks

  • Prevent erosion and support SUDS drainage schemes

Applications

  • Discharge points for pipes and culverts into rivers, ditches, swales, and ponds

  • Attenuation ponds and detention basins

  • Sustainable drainage systems (SUDS)

  • Adoptable sewer outfalls for water authorities

  • Sites with steep banks or limited installation depth

  • Projects requiring compliance with UK water industry standards

  • Visually sensitive or landscaped areas

Options and variations

  • Models for standard, angled, rectangular, narrow, splayed wing wall, and bespoke headwalls.

  • Sizes to suit pipework up to 1500mm

  • Factory-fitted accessories

  • Coloured finishes

Accreditations

  • Designed to BS EN 1992-1-1 (EC2)

  • Manufactured to BS EN 15258 and BS EN 13369

  • Complies with Sewers for Adoption 7th Edition, Sewerage Sector Guidance, and Anglian Water S104 standards

  • Selected models meet Environment Agency’s Standard rules SR2015 No 27

Materials

Made from precast concrete

Colours

Coloured finishes available for certain models

Installation

  • Sectional designs allow on-site assembly around box culverts

  • Precast steps and handrails available for compliance with guidelines

Manufacture

Manufactured in the UK