Neuhold - Backwater Flap

NEUHOLD backwater flaps are used in connection to surface, sewer and process water systems.Water discharging from the pipe opens the flap, however when the head increases on the downstream side, the flap is pressed against it`s seal, preventing backflow. Backwater flaps require only a small head in the pipe to open the flap, as HDPE floats in water - the backwater flaps are fitted with a counterweight to balance the flap correctly.