Abrasive Media Has Met Its Match.

Processing industrial media can be hard on equipment. Especially critical equipment like positive displacement pumps. That’s why Waukesha Cherry-Burrell® offers diffusion hardening for its Universal®2 ND (U2 ND) positive displacement pumps. Diffusion hardening is an innovative technology that extends the service life of critical parts up to 6x longer than untreated parts. 

Abrasion Meets Armor. This is Diffusion Hardening. 

Diffusion hardening is a process called nitrocarburization where the physical elements of stainless steel are strengthened without the use of surface coatings or toxic chemicals. The result is a more resilient metal that can withstand the harshest abrasion. For the U2 ND we treat the stainless-steel rotors, body and cover to resist galling, corrosion and abrasion while holding tight clearances.

Benefits of Diffusion Hardening Include: 

Unmatched wear & galling resistance – surface hardness dramatically iincreases, extending service life of rotors, body and cover.

Higher operating efficiency – tighter clearances cut slip and energy draw and keeps pump performing at factory specs longer.

Longer maintenance intervals – proven 6× longevity means fewer shutdowns and lower spare parts spend. 

Superior corrosion/chemical protection – hardened stainless steel resists aggressive media that would pit or seize untreated pumps. 

Sustainable, chemical-free process – nitrogen-only treatment delivers durability without hazardous by-products, aligning with sustainability goals.