The PR-BW 400 from HMA Flow & Industrial is an automatic backwash filter for the separation of macro fouling (debris) from liquids, especially from cooling waters for turbine condensers and heat exchangers. The main characteristics and outstanding features of this filter are its fourfold redundant operational safety, together with its capability to reliably discharge even extremely large particles.

With regular filtration degrees of 4.5 mm to 9 mm, the filter is applicable for huge volume flows of up to 100 000 m3/h and beyond. A world-first is achieving filter cleaning based on the principle of pressure-relieved backwash (PR-BW). The resultant increase in efficiency marks a new performance standard in the high-end zone.

Due to such remarkable features, the PR-BW 400 from HMA Flow & Industrial has acquired a firm footing on an international level – at all places where permanent availability, absolute reliability, and safety enjoy top priority, such as in cooling water circuits of power stations and nuclear power plants.

Fields of application include operation in seawater, brackish water, river water, or other water sources; for the protection from macro fouling of objects installed downstream, such as condensers and heat exchangers; and in open cooling circuits with once-through cooling or recirculative cooling systems (cooling tower operation).