NETZSCH has unveiled its N.Durance™ tungsten carbide fusion coating for NEMO® Progressing Cavity Pumps, a development positioned to significantly enhance reliability and reduce lifecycle costs across the municipal wastewater sector.
Progressing cavity pumps are central to operations in wastewater treatment plants, where they handle abrasive sludge, chemicals and sludge cake under demanding conditions.
With municipalities under pressure to improve efficiency and minimise downtime, pump durability has become a critical focus.
NETZSCH’s new fusion bonded coating aims to meet that need by delivering markedly improved wear resistance and extended service life.
The N.Durance™ coating uses tungsten carbide—one of the hardest industrial materials, rated around 9 on the Mohs scale—to protect pump rotors from friction, abrasion and corrosion.
Unlike traditional HVOF or chrome plated coatings, which can chip, flake or allow corrosion to undermine the base metal, the fusion process creates a metallurgical bond that integrates the coating directly into the rotor surface.
NETZSCH reports that this results in lower porosity, smoother finishes and significantly longer mean time between failures.
The company’s in house rotor manufacturing in the United States further strengthens reliability and availability. Rotors can be produced and coated within one to two days, enabling rapid delivery and supporting Build America, Buy America compliance. NETZSCH also notes that the fusion process is more environmentally friendly than chrome plating, aligning with wider sustainability goals in the water sector.
Municipal engineers trialling the technology have reported improved pump performance, reduced maintenance requirements and longer stator life.
As wastewater utilities seek cost effective, long term solutions, NETZSCH’s N.Durance™ fusion coating is emerging as a compelling option. The company expects continued adoption as municipalities prioritise resilience, predictive maintenance and sustainable asset management.
NETZSCH’s N.Durance™ fusion coating sets new benchmark for municipal pump reliability
