Althon specialise in the design, manufacture and distribution of drainage products for the management, treatment, isolation and control of water. Their range of products includes Althon precast concrete headwalls, HDPE, cast iron and stainless steel flap valves, penstocks and stop logs. Althon can pre-fit their concrete headwalls with flap valves, penstocks, Kee Klamp hand rails as well as trash screens and gratings at our works to minimise installation time on site and reduce on-site health and safety concerns. Althon also manufacture their own High Capacity Drainage Channel system which is complimented by a range of linear drainage channel products for the effective management of surface water run-off.