Althon PCC Headwalls & Silt Traps offer a cost effective alternative to in-situ structures for connecting pipework discharging into open watercourses.
All drainage pipes discharging into open watercourses, such as Swales, Ditches, Ponds and Rivers, should be fitted with a suitable headwall. These units help to protect and locate outfall pipes and to minimise erosion at the point of discharge. Althon Headwalls can accommodate pipework with an internal diameter of up to and including 1500mm.
Wherever water is to be fed from an open watercourse into a pipe, an Althon Silt Trap Inlet should be provided. The sloped grating minimises the risk of blockage from floating material, and silt will be collected by the Silt Chamber prior to the outfall pipe. Althon manufacture a range of Silt Trap Inlets to cater for pipework with an internal diameter of up to and including 1200mm.
Units are available fitted with, or supplied with a range of accessories including:
Flap Valves • Penstocks • Close Coupled or Cranked Gratings • Vermin Mesh • Additional Weir Walls • Diffuser Blocks • Extended Toe • Stoplogs • Tilting Weir & Channel • “V” Notch Weir • Anti-erosion channels • Water Control Retaining Wall Culvert Ends • Extended Spillways
Standard Accessories / Bespoke designs
Althon Headwalls and Silt Traps have been used on contracts requiring approval from organisations such as the Environment Agency, Local Authorities and the Highways Agency.
Althon Headwalls and Silt Traps are quick and simple to install and reduce the need for skilled labour.
