Althon supplied precast concrete headwalls factory-fitted with bespoke penstocks to Cronfeydd Gwydir Reservoir, Wales.

Althon is able to pre-fit flow control devices such as flap valves, penstocks and Wastop valves to its precast headwalls.

All accessories are factory-fitted meaning the concrete does not have to be drilled on site. This saves time on the installation and has great health and safety benefits.