Duriron Pump

With the rise of advanced ceramics (silicon carbide, alumina) and super-duplex stainless steels, some engineers ask if the Duriron pump is dying. The answer is .

This is the homeland of the Duriron pump. In the production of phosphoric acid via the "wet process," phosphate rock is digested with sulfuric acid. The result is a slurry containing gypsum crystals, silica, and hot phosphoric acid (30-40% P2O5).

More importantly, when exposed to air or corrosive environments, the high silicon content promotes the formation of a tenacious silicon dioxide (SiO₂) film on the surface. This passive film is chemically similar to glass or quartz. It is chemically inert and adheres tightly to the casting, preventing the underlying metal from being attacked by acids. duriron pump

Duriron pumps , currently manufactured under the Durco brand

Disclaimer: Always consult original equipment manufacturer (OEM) manuals (Flowserve/Durco) for specific pressure-temperature ratings and material compatibility for your exact process chemistry. With the rise of advanced ceramics (silicon carbide,

ipy = inches per year penetration

In the annals of industrial engineering, few names evoke the same sense of rugged durability and chemical resilience as the . For decades, these pumps have been the unsung heroes of chemical plants, refineries, and mining operations worldwide. Known for their distinctive dark, gritty texture and almost indestructible nature, Duriron pumps represent a pinnacle of metallurgical engineering designed to tackle the most corrosive fluids known to man. In the production of phosphoric acid via the

The volute casing is the main pressure boundary of the pump. In a Duriron pump, this is cast from high-silicon iron. The walls are thick to provide structural integrity against the brittleness of the material and to dampen vibration. The flanges are typically raised-face or flat-faced, cast integrally with the casing.