Hydro Products

Hydro Products2020-11-26T18:52:01+00:00

Designed for high-impact hydro efficiency

Over the past four decades, Dulas has worked with a range of project partners, from large developers and utilities to private landowners, and this marks us out as one of the leading hydropower companies in the UK.
In addition to our design services and operations and maintenance services, we are also proud to offer the exclusive and ground-breaking AquaShear Coanda screen. This pioneering product offers the highest protection against clogging, maximising flow potential and removing the need for regular site inspections.
The simple elegance of the Aquashear belies a painstaking process of engineering, design and precision manufacturing, honed over two decades of operation and experience in the field.
Find out more about how an Aquashear Coanda screen a real difference to your Hydro operation.

Aquashear Coanda Screens

Maximise the output of your hydro scheme with superior equipment – the Aquashear Coanda screen, exclusive to Dulas.
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See our case studies

Coanda Screen Designs

Dulas offers ten separate Aquashear screen models. These vary in height and bespoke features, ensuring that all projects’ needs are met. The type of screen used on any given project will depend on the head and width available on the intake site, as well as on the required flow rate. Dulas can advise on which screen would prove most suitable for your site.
Single Screens
Multiple Screens

How our coanda screens work

The screen is mounted on the downstream face of an intake weir. Water passes on to the screen via a specially designed acceleration plate, which provides an even distribution of flow and an increase in the water velocity.

As the water moves down the steep face of the screen at high velocity, excluded silt and debris is flushed away to continue downriver. The abstracted water passes through the screen and collects below in a chamber connected to the pipeline or intake channel.

The screen’s design means that only clean water can enter the intake system, while debris such as leaves, twigs and even fish eggs are excluded. The excluded debris remains in the river, eliminating any need to dispose of waste material.

How our screens are made

Aquashear Coanda screens are made from stainless steel. They consist of precisely positioned, finely spaced horizontal wedge wires built into a carefully designed screen.

The high capacity of the screen is achieved through a combination of two things: the Coanda effect (the tendency of fluid to cling to a surface) and the shear produced by the hydraulically sharp edges of the wedge wire.

Aquashear Coanda Distributors

Andaco GmbH
(region – Alpine Europe)
Route de la Metralie 26,
CH-3960 Sierre,
Contact: Yves Rey
Tel: +4127 455 5143
Fax: +4127 456 3245
e-mail: y.rey@cordonier-rey.ch

Savakengineering EOOD
(region – Bulgaria)
Jordan Radichkov Str. 12
3rd floor, ap. 11
7000 Sofia
Contact: Netzo Dimitrov
Tel: +359 2 8240191
Mobile: +359 876373786
e-mail: netzod@gmail.com

Beray Engineering Co. Ltd.
(region – Turkey)
Mutlukent Mah. Angora Blv. 2016/1 Sokak No:11 Beysukent,
06530, Cankaya
Contact: Orhan Gökdemir
Tel: +90 532 304 1295
E-mail: ogokdemir@beraymuhendislik.com.tr

(region – Norway)
Contact: Frode Hellebust
E-mail: Frode.Hellebust@dahl.no

Aquadam Structures Sdn Bhd
(region – Malaysia)
D2-3A-2, Block D2, Pusat Dagangan Dana 1,
Jalan PJU 1A/46,
47301 Petaling Jaya,
Selangor Darul Ehsan
Contact: Syed Mahmor
Tel: +603 784 26775
E-mail: symahmor@gmail.com

Orkuver ehf
(region – Iceland)
Smiðjuvegur 11
200 Kópavogur
Contact: Ásgeir Mikkaelsson
Tel: 5 34 34 36
E-mail: orkuver@orkuver.is

Synergy Ltd
(region – Bosnia & Herzegovina)
Ismeta Mujezinovica 16
71000 Sarajevo
Bosnia & Herzegovina
Contact: Namik Hadziibrahimovic
Tel: 387 (33) 211 347
E-mail: hnamik@hs-hkb.ba

Waterpower Engineering
(region – Ireland)
County Cork
Contact: Dan Twomey
Tel: (00353) 087 261 6178
E-mail: danmar@eircom.net

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