Device for installation in the retention tank. The 3P retention throttle Inox ensures a regular, predefined outflow. The throttle volume is adjustable (5 levels).
The movable arm and brushes attached to the throttle ensure that the throttle opening does not become dirty and is therefore low-maintenance.

In contrast to a conventional static discharge throttle, the discharge from the 3P retention throttle adapts to the current water level in the retention facility, so that the maximum permissible discharge is already reached at the start of reservoir filling. With conventional throttle elements, the maximum permissible discharge capacity is generally only reached at the highest water level in the retention facility; at lower water levels, the throttle capacity decreases accordingly. When using the 3P retention throttle Inox, the required retention volume can be reduced by approx. 30 %.

Compared to a static throttle, the 3P retention throttle Inox also has the advantage that the drain opening cannot become blocked or clogged. Depending on the water level, the crescent-shaped orifice is moved in front of the opening so that any impurities are permanently sheared off with the help of a pair of brushes. This ensures that decentralized retention on private properties is guaranteed in the long term without the need for maintenance.

Flow rates in liters / second