Althon 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. Althon precast concrete headwalls offer a cost-effective alternative to in-situ headwalls pipework discharging into attenuation ponds, rivers, ditches, swales, and tidal environments. We have ranges of Sewers for Adoption 7th Ed. and Severn Trent Water specification compliant headwalls. We offer a range of factory fitted accessories on our headwalls such as flap valves, penstocks, Kee Klamp® handrails, baffle blocks as well as gratings and trash screens. Althon offers a range of specialist water management and flood prevention products such as HDPE flap valves, ductile iron flap valves, penstocks, Wastop inline non-return valves, stop logs, Tideflex duckbill, and Checkmate valves. We offer flanged, wall-mounted and tidal flap valves as well as wall-mounted and inline penstocks. We can factory fit most of these products to our precast headwalls or precast inspection chambers if required. The Althon drainage channel range of surface water channel drainage products caters for all types of construction sites from car parks to airports and docks. Our drainage channels cater for applications from A15 - F900 load classes. We have a range of heavy-duty concrete drainage channels from 100 - 500mm wide, concrete slot drainage channels as well as polymer concrete drainage channel and galvanised or stainless steel slot drains and façade channels. We also manufacture a high capacity channel drainage system. Althon offers a comprehensive range of Sewers for Adoption, Sewers for Scotland and UU specification gratings, 45 and 60 degree sloped trash screens with the option for side returns and circular pipe mounted gratings. We also have a range of pre-cast concrete chambers for housing factory fitted penstocks and precast concrete end walls with fitted penstocks or flap valves.

Althon design and manufacture precast concrete headwalls meeting Sewers for Adoption and Severn Trent specifications. Althon also supply flap valves, penstocks and stop logs as well as trash screens and outfall safety grilles. In addition Althon manufacture precast concrete penstock chambers and offer a large range of commercial and industrial application drainage channels. The Althon drainage channel range of surface water channel drainage products caters for all types of construction sites from car parks to airports and docks. Our drainage channels cater for applications from A15 - F900 load classes. The Althon heavy duty concrete drainage channels range from 100mm to 500mm wide. We also supply concrete slot drainage channels, polymer concrete drainage channel and galvanised or stainless steel slot drains and façade channels.

Althon 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. Althon precast concrete headwalls offer a cost-effective alternative to in-situ headwalls pipework discharging into attenuation ponds, rivers, ditches, swales, and tidal environments. We have ranges of Sewers for Adoption 7th Ed. and Severn Trent Water specification compliant headwalls. We offer a range of factory fitted accessories on our headwalls such as flap valves, penstocks, Kee Klamp® handrails, baffle blocks as well as gratings and trash screens. Althon offers a range of specialist water management and flood prevention products such as HDPE flap valves, ductile iron flap valves, penstocks, Wastop inline non-return valves, stop logs, Tideflex duckbill, and Checkmate valves. We offer flanged, wall-mounted and tidal flap valves as well as wall-mounted and inline penstocks. We can factory fit most of these products to our precast headwalls or precast inspection chambers if required. The Althon drainage channel range of surface water channel drainage products caters for all types of construction sites from car parks to airports and docks. Our drainage channels cater for applications from A15 - F900 load classes. We have a range of heavy-duty concrete drainage channels from 100 - 500mm wide, concrete slot drainage channels as well as polymer concrete drainage channel and galvanised or stainless steel slot drains and façade channels. We also manufacture a high capacity channel drainage system. Althon offers a comprehensive range of Sewers for Adoption, Sewers for Scotland and UU specification gratings, 45 and 60 degree sloped trash screens with the option for side returns and circular pipe mounted gratings. We also have a range of pre-cast concrete chambers for housing factory fitted penstocks and precast concrete end walls with fitted penstocks or flap valves.