Vulcan Road South, Norwich NR6 6AF, UK

Althon have the biggest range of precast concrete headwalls in the UK

Each headwall can be specified with Althon headwall accessories including penstocks, flap valves, handrails, gratings and trash screens.

To assist customers in specifying the most appropriate headwall and associated accessories, the Althon website has an online Headwall Specifier Tool. This provides direct access to product information including datasheets and line drawings in multiple industry formats.

Althon designs to BS EN 1992-1-1 (EC2) standards and manufactures to BS EN 15258 & BS 13369 standards. Althon has headwall ranges that meet specific water authority standards, including Anglia Water, Severn Trent and angled headwalls that meet the Environment agencies “Standard rules SR2015 No 27”

Althon have the industries most comprehensive range of Sewers for Adoption Headwalls that meet the 7th Edition guidelines and comply with the Water industry regulations 2011.

Althon has an experienced team of water industry professionals who can advise on product selection or cross compatibility of Althon products to meet specific needs.

Where a customer’s requirement cannot be met by the standard ranges, Althon offer a free design service and will custom build headwalls and associated accessories to an agreed specification.

As well as precast concrete headwalls and associated products, polymer concrete and high capacity drainage channels and water management products.

Headwall Product Overview

Althon Precast Headwalls cover the smallest outlet to largest culvert in terms of both size and capacity and are available in the following ranges:

  • Sewers for Adoption Headwalls
  • Rectangular Headwalls
  • Sewers for Adoption Rectangular Headwalls
  • Angled Precast Headwalls
  • Precast Headwalls for Culverts
  • Splayed Wing Wall Headwalls
  • Standard Precast Concrete Headwalls
  • Extra Large Headwalls
  • Bespoke Precast Concrete Headwalls
  • Anglian Water Approved Precast Headwalls
  • Severn Trent Specification Headwalls
  • Sewers for Scotland Compliant Headwalls

Each headwall can be specified with factory fitted accessories including:

  • Flap Valves
  • Penstocks
  • Trash Screens and Gratings
  • Kee Klamp® Handrails
  • Integrated Steps
  • Multiple Pipe Openings
  • Cascade Panels
  • Dissipation Blocks & Stepped Baffles
  • Orifice Plates
  • Weirs

If you require any assistance or more information, visit the Althon website or contact Althon by phone on 01603 488700 or by email

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