All of our precast headwalls can be fitted with diffuser blocks on the spillway, stepped baffle blocks or cascade panels.
The AH12C Headwall complies with ‘Sewers for Adoption’ guidelines.
Althon SP ‘Splayed Wing Wall Headwalls’ are produced with a higher wing wall at the front of the apron.
Two SFA27A Headwalls pre-fitted with PN16 Flanged HDPE/SS316L Flap Valves were recently supplied to the Ouse & Humber Drainage Board
Althon have recently launched a standard range of both 45 and 60 degree sloped trash screens with sides.
The AH4C headwall has been designed specifically to meet the Environment Agency’s ‘Standard rules SR2015 No 27
Althon have recently launched a standard range of both 45 and 60 degree sloped trash screens.
A simple manually operated valve for small dimension openings and low pressures
Althon designed and manufactured precast wingwalls, a header beam and culvert sections
Wastop valves supplied to PSA Panama Internal Terminal Quay Expansion (Phase 2), Panama
Althon have launched a range of in – pipe mounted circular gratings
Large HDPE flap valves specially designed for a large project in Qatar
Althon are able to pre-fit flow control devices such as flap valves, penstocks and Wastop valves to our precast headwalls.
Concrete slot drainage channel supplied to Junction 16 - 19 M6 Smart Motorway