Althon precast headwalls can be supplied to site with factory fitted penstocks. As standard we offer penstocks fitted to our headwalls to suit pipework from 100 up to 1500mm. When required we can offer bespoke sized penstocks or headwalls to accommodate penstocks. Our range of precast concrete headwalls with penstocks is just a small sample of what we are able to offer. We are able to offer any of the headwalls we offer with factory fitted penstocks. We are also able to offer precast headwalls with factory fitted flap valves, outfall safety grilles, trash screens and other accessories such as Kee Klamp® handrails and ladders.