Which flow-control devices can Althon factory-fit into headwalls?

Which flow-control devices can Althon factory-fit into headwalls?

Althon can factory-fit various flow-control devices into headwalls, such as penstocks, flap valves, Wastop check valves, stop logs, duckbill (Tideflex) valves, orifice plates, and safety gratings or trash-screens.

For more information on Which flow-control devices can Althon factory-fit into headwalls? talk to Althon Ltd