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Hydraulic steel construction

Weir Flaps

Our weir flaps are used to regulate the level of reservoirs. State-of-the-art automation technology makes it possible to flexibly adjust the water level to respond to various conditions. In view of the enormous forces caused by dammed-up water masses, IAB weir gates score points with their optimal geometry, robust design and top-quality materials – which means minimal maintenance and a long service life. At IAB, you will find various types of weir flaps, each one a custom-made masterpiece.

How our flap gates prove their effectiveness

With a flap drive via hydraulic cylinders and the ability to have an opening tendency in any position due to their own weight, they ensure reliable performance. Easily replaceable seals allow for simple maintenance and long-term reliability. A vacuum ventilation channel and jet breaker in the overflow edge area ensure optimal functionality and safety. Additionally, they are equipped with an overload valve and a float for flood triggering, as well as a corrosion protection plate for long service life. Optionally, heated side panels are available to prevent the seals from freezing and to ensure the efficiency of the flap gates even under extreme conditions.


Bernhard Maier

Tel: +43 664 24 39 881
Fax: +43 4352 51621-22

Alexander Rebernig

Mobil: +43 664 88411998 
Fax:+43 4352 51621-22