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...

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 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...

Althon R7C Rectangular Headwall Range is a precast concrete headwall system for highways, motorways, and road projects, designed for pipework up to 500mm internal diameter, with multiple backwall heights and wingwall profiles: precast concrete headwall system; for pipework up to 500mm ID; multiple backwall heights: 750mm, 880mm, 1150mm; range of...

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...

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...

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....

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 400 Mitred Headwall is a fibre reinforced precast concrete open inlet for surface water runoff, suitable for pipework up to 375mm and 400mm internal diameter, with a 1:3 (18°) mitred profile matching swale and pond slopes, and supplied with a galvanised steel straight bar grating: fibre reinforced precast concrete headwall for 375mm and...

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...

Althon 500 Mitred Headwall is a fibre reinforced precast concrete headwall for pipework up to 500mm internal diameter, designed to manage surface water runoff into SUDS features or act as an outlet or overflow. Inlet profile matches a 1:3 (18°) slope for swales and ponds, with straight bar galvanised steel grating as standard: fibre reinforced...

Althon 600 Mitred Headwall is a fibre reinforced precast concrete open inlet for surface water runoff, designed for pipework up to 600mm internal diameter. Inlet profile matches a 1:3 (18°) slope for swales and ponds, with a galvanised steel straight bar grating and optional inline non-return valve. Standard finish is natural concrete, with four...

Althon manufactures a large range of precast concrete headwalls, covering pipes, culverts and box culverts. Precast headwalls are a cost-effective and practical alternative to in-situ construction. Designed for use in SUDS drainage schemes, for protecting watercourse outfalls from erosion and providing a compliant, durable discharge point across a...

Althon supplied several headwalls with factory fitted Kee Klamp handrails for Bridge of Orchy, Scotland....

Althon manufacture concrete headwalls with Tideflex duckbill valves. The duckbill valves are factory fitted to precast headwalls ensuring they fit properly every time and reducing installation time on site. Multiple duckbill valves can be fitted to a single headwall if required. The Tideflex duckbill check valve prevents backflow...

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...

Althon sloped trash screens with a 45° rake are manufactured in galvanised mild steel: 40 x 10mm flats at 75mm centres, and 50 x 12mm flats at 100mm centres; designed to suit pipework up to and including 1500mm; manufactured to any size and specification required outside of the standard range, if required; also available in stainless steel, on...