Headwalls - from top UK suppliers

Althon manufactures precast concrete headwalls with factory-fitted flap valves ensuring they fit properly and reducing installation time on site. Factory-fitting flap valves to headwalls means the headwalls do not have to be drilled once on site. Althon can fit multiple flap valves to a single headwall and offers flap valves fitted to concrete...

R7C precast headwalls are suitable for highways applications and are available in a range of backwall heights and wingwall profiles for pipework up to and including 500mm ID. Althon R7C headwalls for motorways and other road projects can be factory-fitted with accessories such as handrails, trash screens, flap valve and penstocks. R7C A Headwall...

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...

Coloured precast concrete headwalls from Althon are particularly suitable for aesthetically-sensitive areas and can help the installation blend into the surrounding landscape. A colouring additive for cementitious materials is added, providing a uniform, streak-free colour...

Althon's concrete angled headwalls are often specified where the outfall is on a bend and the water needs to flow from the headwall at an appropriate angle to the watercourse. 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. Althon cast the openings...

Althon manufactures a comprehensive range of rectangular headwalls, including versions that are SFA (Sewers for Adoption) compliant...

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...

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....

Marshalls Civils & Drainage manufactures off-site precast concrete headwalls designed to connect pipe outflows into open water courses. Precast headwalls control erosion and scour resulting from excessive velocities and turbulence and prevent soil from sloughing into watercourse openings: accommodates pipe diameters up to 900mm; optional...

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...

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...

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...

Althon small precast headwalls are suitable for pipe sizes ranging from 100mm to 450mm concrete or 600mm plastic pipework. Openings are cast to suit the outsider diameter of the connecting pipework. Small headwalls can be factory fitted with a range of accessories such as flap valves, penstocks, gratings and handrails: 100 to 450mm (concrete)...

Althon medium precast headwalls are suitable for pipe sizes ranging from 450 to 900mm concrete or plastic pipework. Headwall openings are cast to suit the outsider diameter of the connecting pipework. Medium headwalls can be factory fitted with a range of accessories such as flap valves, penstocks, gratings and handrails: SFA10 B, C and D...

Althon large precast headwalls are suitable for pipe sizes ranging from 750 to 1200mm concrete or plastic pipework. Headwall openings are cast to suit the outside diameter of the connecting pipework. Large headwalls can be factory fitted with a range of accessories such as flap valves, penstocks, gratings and handrails: h20C (two piece) 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...

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...

Althon supplied eight SFA15 B precast concrete headwalls, complete with 650 x 300mm toes, Kee Klamp handrail and SFA outfall safety grilles, to Barratt Homes in Uttoxeter. New-build housing developments in the UK are incorporating balancing ponds, also known as attenuation ponds, into estates which form part of the sustainable drainage...

Althon supplied several precast concrete headwalls as part of the Arbroath Flood Prevention Scheme, including an SP15J headwall and, either side of the channel, AH12CB LH and RH precast concrete headwalls, plus smaller AH4CB LH and RH headwalls. The scheme is designed to reduce the risk of flooding from the Brothock Water, which runs...

Althon supplied a number of made-to-order precast concrete headwalls to the Third River Crossing (Herring Bridge) project in Great Yarmouth. The majority of these were supplied with fitted accessories such as Kee Klamp handrails, HDPE non-return flap valves, and pond liner brackets at the customer’s request. One of the benefits of opting for...

Althon supplied a bespoke precast concrete headwall to Cyrddan Brook in Wales. The headwall needed to be rectangular and accommodate a 1050mm ID PCC pipe. The company was able to design a suitable headwall plus factory-fit Kee Klamp handrail and a cranked grating complete with catwalk, which made installation much faster and safer....

A range of headwalls with channel extensions for pipework up to 750mm. Precast channel extensions are available in sections to build up to a required length. Channel headwalls and extension pieces can be factory fitted with gratings, handrails and walkways and flow control devices Headwall channel extension pieces are joined using turnbuckles and...

Althon supplied 10 precast concrete headwalls for the A4119 dualling scheme at Radyr in Wales. All of the headwalls required factory-fitted accessories such a Kee Klamp handrail, gratings and aluminium stop logs. Having the accessories factory-fitted saves time on installation and has health and safety benefits. The construction phase of this...

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...