The fish ascent screw (FAS, mono-tube)

The economical alternative for fish ascent

With the fish ascent screw (FAS) Hydroconnect additionally offers a low cost solution for the creation of fish passage from downstream water to the upstream water.

After a fast, cost-effective installation the fish ascent screw (FAS) runs with no water loss (savings of the official FAH supply).

The system includes the patented technologies for the low-maintenance belt capstan and the luring and guiding current and is driven by a motor drive (ca. 1-2 kW consumption).

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You want fish descent + fish ascent + electricity generation?

Benefits of the fish ascent screw

all benefits in detail

Injury-free fish ascent

Fish and other river life pass without injury and effortlessly from downstream water to the upstream water.

Low Space

The thin hydropower screw requires a minimum amount of construction work, protects the riverbed and is integrated inconspicuously into the landscape.

No water loss

Savings of the official FAH supply

Suitable for fluctuating water levels– No debris jamming possible

After flooding not maintenance-intensive such as slot pass or pool pass

Fast, cost-effective installation

because of simple and robust construction

Low-maintenance & all heads doable

The patented belt capstan replaces grease-lubricated underwater mountings and allowes all heads.

The solution in use

all locations

Location	Country	River	Maintainer	Predominant fish	Flow	Drop height
Dürndorf	Austria	Alm	Leberbauer GmbH	Trout up to 90cm	1200l/s	3,7m
Neubruck	Austria	Jeßnitz	HYDROCONNECT	Trout (30cm), bullheads	1000l/s	3,32m
Retznei	Austria	Sulm	Verbund	Pike (90cm)	400l/s	5,5m

Your project

Additional questions? Contact your product account manager Nino Struska. He would be happy to answer your questions and help you during the planning and realisation.