ALTHON LTD

VULCAN ROAD SOUTH
NORWICH
NORFOLK NR6 6AF

Tel: 01603 488700
Fax: 01603 488598

Company Logo

Suppliers of: Headwalls, precast concrete Headwalls,RSFA Headwalls, Angled Headwalls, rectangular Headwalls, splayed wing Headwalls, Swale Inlet Headwalls, Drainage Channels, linear drainage, slot drainage, heavy duty drainage channels, checkvalves

Althon Ltd manufacture and distribute specialist water management products to the construction industry.

We design and manufacture precast concrete headwalls to meet Sewers for Adoption and Severn Trent Guidelines. Our product range includes flap valves, penstocks and stop logs as well as trash screens and outfall safety grilles. Althon also manufacture precast concrete penstock chambers and offer a large range of commercial and industrial application drainage channels.

BIM Files available to download

Althon has an extensive range of BIM files covering all types of Headwalls. Please click here to access their BIM Library

Main Products & Services:

Precast Concrete Headwalls

Precast concrete headwalls offer a cost effective alternative to in-situ structures for pipework & concrete box culverts discharging into open watercourses such as rivers, ditches, ponds, swales and tidal environments. Althon have the largest range of precast concrete outfalls & spillways available in the UK, with models that meet Sewers for Adoption guidelines, a range of rectangular models conforming to Severn Trent Water specifications with an array of wingwall profiles, backwall widths and heights as well as being able to offer bespoke precast outfall and wingwall solutions.

Sewers for Adoption (SFA) Headwalls

Althon Sewers for Adoption precast headwalls should be used when part of a Section 104 Agreement and the sewers are to be adopted once completed by the local Water Company. The materials used and installation must comply with the ‘Sewers for Adoption’ guidelines.  Althon precast concrete outfalls offer a cost effective alternative to in-situ structures for connecting pipework discharging into open watercourses.

Headwall Specifier Tool

The Althon headwall specifier has been designed to help you select the most appropriate headwall for your project. Once you have found the right product model for your project you can download CAD and PDF files of your headwall complete with all relevant accessories as well as brochures and datasheets.

Rectangular Sewers for Adoption (RSFA) Concrete Headwalls

Althon Rectangular Precast Headwalls are Sewers for Adoption compliant precast concrete headwalls for outfalls discharging into ponds, swales, ditches beaches and rivers. RSFA precast headwalls come with the option of two thicknesses of toe, 300mm and 500mm, each of which is available in three depths. Althon manufacture RSFA precast headwalls with three different wall profiles to suit the gradient of the bank as follows 1 : 1 slope, 1 : 2 slope and 1 : 3 slope. RSFA precast concrete headwalls are typically supplied complete with Kee Klamp® Handrail to the back wall and horizontal sections of the wing walls, a galvanised steel access ladder and a self-closing gate with padlock facility above.

Angled Precast Headwalls

Angled precast headwalls allow pipework entering a watercourse at an angle to be accommodated or for an outfall to be situated on a bend in a river. We cast the openings in our headwalls to suit your pipe diameter and material. We will also set the invert level of the pipe into the concrete headwall to your specification if required. We can also cast in multiple pipe openings if required.

Rectangular Headwall Range

Althon offer a large range of rectangular precast concrete headwalls for pipework discharging into ponds, swales ditches, rivers and tidal environments. Our rectangular headwalls are available in a range of backwall widths and heights for pipework up to 750mm.

Precast Headwalls for Culverts

Our precast headwalls for culverts offer a Cost Effective alternative to in-situ structures for connecting Pipework discharging into Open Watercourses. All Drainage pipes discharging into Open Watercourses, such as Swales, Ditches, Ponds and Rivers, should be fitted with an appropriate Althon Headwall. Althon Headwall units can be Pre-Fitted with a Range of Accessories such as Flap Valves, Penstocks, Kee Klamp Handrails and a selection of Gratings dependant on application.

Precast Headwalls with Penstocks

Althon precast headwalls can be supplied to site with factory fitted penstocks. As standard we offer penstocks fitted to our headwalls to suit pipework from 100 up to 1500mm. When required we can offer bespoke sized penstocks or headwalls to accommodate penstocks.

Splayed Wing Wall Headwalls

Althon SP ‘Splayed Wing Wall Headwalls’ are precast headwalls produced with a higher wing walls at the front of the apron. SP precast headwalls are for inlets or outlets situated in locations with high or steep embankments or where the structure is required to provide protection to an accessory such as a flap valve, duck bill valve, stop logs or weir wall. Althon SP precast concrete headwalls offer a cost effective alternative to in-situ structures for connecting pipework discharging into open watercourses.

SFA Headwalls with Precast Steps

Althon offer precast concrete Sewers for Adoption compliant headwalls complete with precast concrete steps. Typically our precast headwalls with steps will be supplied with an appropriate Sewers for Adoption compliant outfall safety grille and galvanised steel Kee Klamp® handrailing with gated access.

Drainage Channel Range

Althon channel drainage range of surface water drainage products caters for all types of construction site circumstances. Products include concrete slot drainage channels, GRP drainage channel, polymer concrete drainage channel and concrete drainage channels. Althon’s drainage channel products have been developed to be lightweight, easy to transport and quick to install and maintain. The Althon linear drainage channel range has been optimised for stability, discharge capacity and longevity for a range of applications and load classes, from A15 through to F900. We offer drainage channels for use in residential environments through to heavy industrial applications such as docks and airports.

Further Technical information is available to download from the BPi Download Library or from the Manufacturer’s own website.

 

CHANNEL GRATINGS Cast Iron .
CHANNEL GRATINGS Ductile Iron .
CHANNEL GRATINGS Linear Drainage Channels .
CHANNEL GRATINGS Steel .
CHANNELS Slotted .
CHECK VALVES Elastomer .
CULVERT Headwalls Precast Concrete
CULVERT Headwalls Specialist Fabricators
DRAINAGE Headwalls Accessories
DRAINAGE Headwalls Concrete
DRAINAGE Headwalls GRC
DRAINAGE Outfall Safety Grilles .
DRAINAGE CHANNEL Lid Units GRC Formers For In-Situ Concrete Casting
DRAINAGE CHANNEL Lid Units Precast Concrete
DRAINAGE CHANNEL Lid Units Precast Concrete C250 Loading
DRAINAGE CHANNEL Lid Units Precast Concrete Combined Kerb
DRAINAGE CHANNEL Lid Units Precast Concrete D400 Loading
DRAINAGE CHANNEL Lid Units Precast Concrete For Flush Macadam Finishes
DRAINAGE CHANNEL Lid Units Precast Concrete Grating Incorporated
DRAINAGE CHANNEL Sump Units Silt Bucket
DRAINAGE CHANNELS Airport Runway .
DRAINAGE CHANNELS Bridge .
DRAINAGE CHANNELS BS EN 1433:2002 .
DRAINAGE CHANNELS BS EN 1433:2002 Load Classes A-F .
DRAINAGE CHANNELS Car Parks / Parking Areas .
DRAINAGE CHANNELS Cast Iron Tops Ductile Iron Gratings
DRAINAGE CHANNELS DIN EN 1433 CE Marked .
DRAINAGE CHANNELS Extreme Loadings Ultra Heavy Duty
DRAINAGE CHANNELS Facades .
DRAINAGE CHANNELS Galvanised Steel .
DRAINAGE CHANNELS GRC Glassfibre Reinforced Concrete .
DRAINAGE CHANNELS GRC Glassfibre Reinforced Concrete High Capacity
DRAINAGE CHANNELS GRC Glassfibre Reinforced Concrete Precast Concrete Lid Units
DRAINAGE CHANNELS GRP Glassfibre Reinforced Polyester .
DRAINAGE CHANNELS Heavy Duty .
DRAINAGE CHANNELS Hidden Channel .
DRAINAGE CHANNELS High Capacity .
DRAINAGE CHANNELS Industrial Applications .
DRAINAGE CHANNELS Lightweight: Loading Classes A-E DIN 19580 EN1433
DRAINAGE CHANNELS Linear .
DRAINAGE CHANNELS Linear BS EN 1433 .
DRAINAGE CHANNELS Mesh Tops Mesh Gratings
DRAINAGE CHANNELS Petrol Station .
DRAINAGE CHANNELS Precast Concrete .
DRAINAGE CHANNELS Rail Infrastructure Applications .
DRAINAGE CHANNELS Road Highway Street
DRAINAGE CHANNELS Slot Systems .
DRAINAGE CHANNELS Slot Systems BS EN 1433:2002
DRAINAGE CHANNELS Slot Systems Fire Protection
DRAINAGE CHANNELS Slot Systems Loading Classes B-F DIN 19580
DRAINAGE CHANNELS Slot Systems Precast Concrete
DRAINAGE CHANNELS Slot Systems Sump Units
DRAINAGE CHANNELS Steel .
DRAINAGE CHANNELS Steel Tops
DRAINAGE CHANNELS Terraces .
DRAINAGE GULLIES .
FLAP VALVES Sewage .
FLOOR DRAINS Terrace .
GULLIES Polymer Concrete .
PENSTOCK Endwalls .
PENSTOCKS Sluice Gates .
ROOF TERRACE Drainage .
SEWAGE Backwater Valves .
SEWAGE Flap Valves .
SEWAGE Penstocks Sluice Gates
SEWAGE Penstocks Sluice Gates Polymeric HDPE
SPILLWAY SYSTEMS Spillway Headwalls Precast Concrete
TERRACE Drainage Systems .
WASTOP VALVE In Line .
AQUATIC Penstocks
BGZ-S Channel Drainage System
FORMA Channel Drainage Lid Units
FORSHEDA Seals
GRASPOINTNER Drainage Systems
H28C Precast Headwall Unit
MEADRAIN Channel Grating
MEARIN GRP Drainage Channel
MEARIN EXPERT GRP Drainage Channel
MEARIN PLUS GRP Drainage Channel
PROFIX Grate Safeguard
R10C Precast Headwall Unit
R18B Precast Headwall Unit
RSFA Precast Headwall Unit
SFA10 Precast Headwall Unit
SP10 Precast Headwall Unit
STILPRO Channel Drainage Lid Units
TIDEFLEX Check Valve
TIDEFLEX CHECKMATE Inline Check Valves

NEW - Althon Rectangular Channel Headwalls

April 2021

NEW - Rectangular Channel Headwalls

Headwalls with channel extensions suitable for pipework up to 750mm ID

Althon offer a range of headwalls with channel extensions for pipework up to 750mm. Precast channel extensions are available in sections for you to build up to a required length and are joined using turnbuckles and mastic sealant.

Channel headwalls and extension pieces can be factory fitted with accessories such as Kee Klamp® handrails, walkways and a selection of gratings depending on the application. This also includes all manner of flow control devices.

Rectangular Channel Headwalls:
To view our range of RSFA Headwalls simply click here

If you require any assistance, or more information, please contact us by phone on 01603 488700 or by email sales@althon.co.uk

Althon Bespoke Trash Screen Project - Hartlebury Castle Preservation Trust

April 2021

Althon Bespoke Trash Screen Project - Hartlebury Castle Preservation Trust

Althon Limited pride themselves on their innovative design service, striving to exceed customer expectations and to ensure that the product supplied is the most suitable for the application.

A bespoke trash screen was designed alongside the Hartlebury Castle Preservation Trust, to replace a degrading trash screen that was starting to collapse. The trash screen was in an area that was difficult to access, which meant that the design of the existing trash screen needed to be upgraded to offer minimal maintenance and a reduced risk of debris becoming building up. Althon trash screens are designed to reduce the amount of trash, litter and natural debris entering pipework and culverts whilst preventing unauthorised access and blockages.

Althon worked with the customer and their contractor to come up with a bespoke sloped trash screen with sides to both prevent access and allow raking to clear the grate, if required. This project included a water level monitor as requested by the customer.

To find out more about our design services, call us on 01603 488700 or e-mail sales@althon.co.uk with details of your project.

List all press releases