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Aquashear Coanda 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.

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Aquashear Coanda Multiple Screens

Standard aperture 1.0mm
One-piece welded construction with integral endplates (except Type A)
All 304 stainless steel (316 available on request)

The multiple screens are designed to be bolted together to make longer screens for larger projects. There are five types of multiple screen models; Type A, Type AB, Type C, Type F and Type K. The Type A and Type AB screens are full height screen with a head loss of 1270mm; the Type A screens have a removable screen panel for applications with very abrasive sediment loads. All the other screen types are of fully-welded construction. Type C screens are half height with a head loss of 700mm; the Type F screens are quarter height with a head loss of 450mm. The Type K screens are double height screens, with a head loss of 1900mm. With the exception of the Type A screens, all the screens can be equipped with boulder protection bars.

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Coanda Screen Cleaning

Whilst Coanda screens are typically very low maintenance, for a small number of installations, certain conditions can result in increased cleaning requirements. Depending on the location of the Coanda screen and factors such the flow conditions and the biological component of the water, stubborn debris such as algae and moss can build up slowly over time, creating blockages and reducing abstraction, limiting the effectiveness of the screen and resulting in production losses. Where this happens, adopting a more frequent cleaning regime is recommended. But in locations where access is difficult or complicated by weather conditions or geography, then an automated solution could be considered. In particular, to avoid sole operators working in the water in high flow conditions, or accessing the site during adverse weather. The automatic screen cleaner can offer a useful enhancement to any Health and Safety Management System. Dulas is a reseller and installer of the SSES Automated Screen Cleaner in the UK.