Why is it better?

The development work leading up to the new NP Drumfilter covers the basic design principles, as well as many detail refinements. For example:

• Drum design with support shaft and slide centre bearings at each end – improved structural integrity, reduced over-all weight and long-life bearings help reduce investment and operational costs.

• Increased drum length-to-diameter ratio – provides an increase in peak solids loading capacity.

• Drumfilters from model size 1212 and upwards are by default equipped with oscillating backwash spray header (”Moving Backwash”). This function improves the cleaning and life span of the filter cloth and reduces backwash water consumption by 20%. (A)

• Peripheral drive arrangement with lubricant-free non-metallic chain reduce stress on the drum structure and drive arrangement, leading to reduced maintenance costs. (B)

• Choice of modular filter panel designs:
  BioGuard FLO panel – built on our proven PL Panel, with a uniqe cloth weave design, this panel is increasing hydraulic capacity, enhancing particle-holding ability, improving cleanability and filtration.
  BioGuard PRO PG panel with polypropylene grid and the BioGuard PRO PL panel with 8% larger open filter area. Comparison tests show quicker lifting-out of particles and less lifting-out of water. (C)

• Single GRP access cover with stainless steel gas struts and safety switch – enhanced safety and access in service and maintenance. (D)

• Modular design – increases manufacturing efficiency leading to reduced initial purchase cost and improved delivery periods.

• Emergency bypass – protects the drumfilter from overloading.