Call us: 01654 705000
Coanda Screen Designs

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.

About hydro coanda screens
Single coanda screens

Single Screens

Single screens are supplied as one-piece fully welded units with integral endplates to help seal at the sides. All have the following standard characteristics:

  • Wedge wire aperture 1.0mm
  • One-piece welded construction with integral endplates
  • All 304 stainless steel (316 available on request)

 

There are three types of single screen models; type B, D and E. Type B is a full height screen with a head loss of 1270mm; type D is a half height screen with a head loss of 705mm; and type E is a quarter height screen with a headloss of 400mm.

Download the specifications for these screens

Multiple Screen Installations

Larger hydro projects (generally 200 l/s and above) often require multiple screen installations. There are five types of screen models available for this type of scheme. In various combinations they will produce the required flow rate. All have the following standard characteristics: 

  • Wedge wire aperture 1.0mm 

  • One-piece welded construction with integral endplates 

  • All 304 stainless steel (316 available on request) 


 

Type A, and type AB are both full height screens with a head loss of 1270mm; type C is a half height screen with a head loss of 700mm; type F is a quarter height screen with a head loss of 450mm and type K is an extended-height screen with a head loss of 1900mm.

Download the specifications for these screens

Multiple coanda screens
Coanda screens with intergral sumps

Screens with integral sumps

At some remote sites prefabricated stainless steel sumps have been used instead of concrete for the smaller screens. These are referred to as Type-S, and the design is site specific. More details are available on request.

Register to download further information

Access technical drawings, installation guides and warranty information

Register