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...

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'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...

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 provides a uniform, streak-free colour...

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...

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 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...

The Hythe scheme was commissioned by INVVU, who required a solution to discharge water from two separate pipes into a privately owned watercourse. The site presented complex ground conditions, varying pipe elevations, and limited space due to sloped terrain, all of which ruled out a straightforward, traditional concrete approach. During the design...

Fibre reinforced precast concrete headwall for 375mm and 400mm pipes. Mitred 1:3 (18°) profile aligns with typical swale and pond embankments. Open inlet design for SUDS, outfall, or overflow use. Galvanised steel straight bar grating included as standard. Can be factory fitted with a 400mm inline non-return valve...

Fibre reinforced precast concrete headwall for 450mm pipes. Open inlet design for SUDS, swales, ponds, and overflows. 1:3 (18°) mitred profile aligns with ground contours. Galvanised steel straight bar grating included. Optional factory-fitted 450mm inline non-return valve...

Fibre reinforced precast concrete headwall for 500mm pipes. Open inlet design for surface water management. 1:3 (18°) mitred profile aligns with ground slope. Galvanised steel straight bar grating included. Can be factory fitted with 500mm inline non-return valve. Natural concrete finish as standard; four colour options...

Fibre reinforced precast concrete headwall for 600mm pipes. Open inlet design for SUDS, swales, ponds, and overflows. 1:3 (18°) mitred profile aligns with ground slope. Galvanised steel straight bar grating included. Optional factory-fitted 600mm inline non-return valve. Choice of four concrete colours...

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...

Concrete headwalls with integrated cascade panels for water flow control. Slows discharge from pipes to reduce erosion and manage water entry into watercourses. Standard and non-standard designs to suit site requirements. Range of headwall sizes and configurations...

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