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Headwalls
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Headwalls for watercourse outfalls, culverts and drainage infrastructure. Precast concrete, GRP and HDPE units for pipe entries to rivers, ditches, SuDS ponds and coastal defences. Options for flap valves, penstocks, trash screens, toe aprons, handrails and access steps. Functions: erosion protection, bank stabilisation, hydraulic control, asset protection and safe maintenance.
SponsoredNew Mitred Headwall Range
Althon mitred headwalls for pipework up to and including 600mm are fibre reinforced precast concrete open inlets allowing surface water runoff to enter SUDS features, or to act as an outlet or overflow. The profile of the inlet 1:3 (18 Degrees) is the same as the surrounding ground in accordance with guidelines for the construction and adoption of- NEWS
Althon
Headwalls - helping you find the best solution for your project.
SFA (Sewers for Adoption) - precast concrete headwalls
Althon Sewers for Adoption (SFA) precast concrete headwalls are suitable for connecting pipework to open watercourses, and designed for compliance with Sewerage Sector Guidance and Section 104 Agreements. The range supports single or multiple pipe openings, pipe sizes up to 1500mm, and various backwall heights and toe depths, with options for
RSFA11 precast concrete rectangular headwall
RSFA11 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. RSFA 11 precast concrete headwalls are available with both sloped and
R18A Rectangular Headwall Range - precast single piece concrete headwalls
R18A rectangular, single-piece concrete headwalls have a separate toe extensions and can accommodate twin-wall, uPVC or clay pipes up to 600mm, or concrete pipes up to 525mm. Available with 1080mm back wall heights; 3 depths of toe in 300 and 500mm thickness; fixed to the headwall using threaded rod, nuts and washers, and high-strength, non-shrink
H6C headwall range, 1100-2050mm backwall height
A one-piece reinforced concrete headwall to suit plastic or clayware pipes up to 500mm or PCC pipes up to 450mm. Available with three standard backwall heights, 1.1m, 1.5m and 2m; lifting points cast in to each wingwall for safe handling using Althon lifting clutches; stainless steel sockets provided for the attachment of gratings and
Rectangular Sewers for Adoption (RSFA) Headwalls
Althon manufacture rectangular Sewers for Adoption (RSFA) precast concrete headwalls, for outfalls discharging into ponds, swales, ditches, beaches, and rivers. Compliant with Sewers for Adoption standards and Severn Trent Water STD6002 for pipework up to 600mm. Options for toe thickness, wall profile to suit bank gradients, and can be supplied
450 Mitred Headwall - precast concrete drainage inlet for 450mm pipes
Althon 450 Mitred Headwall is a fibre reinforced precast concrete open inlet for surface water runoff, designed for pipework up to 450mm internal diameter. Inlet profile matches a 1:3 (18°) slope for swales and ponds, with a galvanised steel straight bar grating as standard and optional inline non-return valve: fibre reinforced precast concrete
Standard precast concrete headwalls
Althon standard precast concrete headwalls are designed for connecting drainage pipes to open watercourses. The range accommodates pipe sizes up to 2100mm, with options for multiple pipe openings and custom pipe positions. Factory-fitted accessories and compliance with UK water authority guidelines distinguish this product range
SFA15 B headwall, backwall height 1650
SFA15 B precast concrete headwall for connecting pipework discharging into open watercourses. Sewers for Adoption compliant. Pipework up to 1050mm. Backwall height 1650
Rootlok Vegetated Headwalls
Headwalls provide much-needed protection to drainage pipes and outlets discharging water into rivers, swales, ponds and ditches. A suitable headwall will protect the area surrounding the culvert from erosion whilst retaining the embankment. As a result, the efficiency and longevity of the culvert is increased. Rootlok headwalls offer an effective
H8C headwall range, 1100 / 1500 / 2100 backwall height
A one-piece reinforced concrete headwall to suit plastic or clayware pipes up to 525mm or PCC pipes up to 450mm. Available with three standard backwall heights, 1.1m, 1.5m and 2.1m; lfting points cast in to each wingwall for safe handling using Althon lifting clutches; stainless steel sockets are provided for the attachment of gratings and special
H40C headwall, backwall heights 1120 - 2340
A one-piece reinforced concrete headwall available in three widths and five standard heights. Particularly suitable for steep embankments. Due to the relatively narrow footprint of the unit (back to front) it is advisable to fit suitable brackets to attach ground anchors: up to 600mm pipework; backwall heights 1120mm to 2340mm; suitable for steep
RSFA20 rectangular precast concrete headwall
Althon RSFA20 are Sewers for Adoption compliant rectangular 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 manufactures RSFA20 precast headwalls with three
Bespoke gratings and trash screens for precast headwalls
Althon can produce bespoke gratings and trash screens for in-situ structures and precast headwalls to any specification. Gratings are typically manufactured in either galvanised steel, stainless steel grade 304 or grade 316. Other materials can be discussed if required. Cranked gratings are manufactured for use with flow control devices such as
R18B rectangular, single-piece concrete headwalls
R20B rectangular, single-piece concrete headwalls have a separate toe extensions and can accommodate twin-wall, uPVC, concrete or clay pipes up to 750mm. Available with 1300mm back wall heights; 3 depths of toe in 300 and 500mm thickness; fixed to the headwall using threaded rod, nuts and washers, and high-strength non-shrink grout. Options: gratings; flap valves
Bespoke precast concrete headwalls
Althon designs and manufactures bespoke precast concrete headwalls to meet site-specific requirements where standard headwalls are unsuitable. Available as large sectional structures or single units, they can be tailored to include gratings, flap valves, trash screens, handrails, walkways and step ladders
ACO SuDS swale inlet unit
The ACO SuDS Swale Inlet offers a visually appealing solution for linking proprietary drainage systems to vegetated features such as: swales; basins; ponds; water Courses; rain Gardens. Unlike traditional in-situ concrete structures, the low-profile inlet blends naturally with its surroundings, enhancing the environment rather than disrupting it
SFA20 C headwall, backwall height 2000
SFA10 B precast concrete headwall for connecting pipework discharging into open watercourses. Sewers for Adoption compliant. Pipework up to 1350mm PCC / 1200mm plastic and clayware. Backwall height 2000mm
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
Precast concrete headwalls
FP McCann precast concrete headwalls are designed as end connection points for outfall pipes discharging into open watercourses. Precast units are intended to reduce the need for on-site shuttering and in-situ concrete work. Their use is suited to locations where access is restricted or where environmental conditions require minimal disruption
Precast concrete headwalls with cascade panels
Althon headwalls with cascade panels are made from concrete and include cascade panels designed to slow water flow from pipes down embankments before entering a watercourse. Standard and custom sizes are available to suit a range of headwall designs: concrete headwalls with integrated cascade panels for water flow control; slows discharge from
SFA27 B headwall, backwall height 1650
SFA27 B precast concrete headwall for connecting pipework discharging into open watercourses. Sewers for Adoption compliant. Pipework up to 1050mm. Backwall height 1650mm
Rectangular precast concrete headwalls
Althon manufactures a comprehensive range of rectangular headwalls, including versions that are SFA (Sewers for Adoption) compliant
CSP box culvert headwalls
The CSP range of precast concrete box culvert headwalls from Althon is designed to offer a cost-effective alternative to in-situ structures for connecting pipework discharging into open watercourses. Suitable applications include swales, ponds, rivers and ditches. Units can be pre-fitted with a range of accessories including flap valves
H3G GRC headwall
The H3G GRC headwall is a precast glass-reinforced cement headwall with an opening to suit 150mm diameter pipes and knockout webs to enlarge to 225mm and 300mm diameter pipes. Cost-effective alternative to in-situ structures for connecting drainage pipework discharging into open water courses. Nominal wall thickness 20mm. Toe depth 150mm. Stainless steel grating sockets
