CPO Pumps

The Ruhrpumpen CPO is a single-stage, end-suction ANSI B73.1 chemical process pump engineered for reliable handling of corrosive, abrasive, and solids-laden fluids. Equipped with a semi-open impeller, the CPO provides excellent solids-handling capability and simple, precise wear adjustment, ensuring long-term hydraulic efficiency even in demanding chemical applications.

Designed with a best-in-class power frame, the CPO offers extended L10 bearing life—up to 75,000 hours at maximum speed and impeller diameter—supported by oversized bearings, fin-cooled housings, and large oil sump capacity for superior lubrication. Its robust shaft design delivers exceptional stiffness (L3/d4 ratio), significantly reducing shaft deflection and improving the lifetime of mechanical seals.

The CPO pump features an optimized seal chamber that enhances flushing and cooling, helping vapors, gases, and entrained solids escape away from the seal faces for longer seal life. It is compatible with a wide range of mechanical seal options, including component, cartridge, and API 682 configurations.

With corrosion-resistant material options—including ductile iron, carbon steel, 316L stainless steel, duplex, Hastelloy, zirconium, and PFA-lined constructions—the CPO adapts to a broad spectrum of chemical processing conditions.

Typical Applications:
Solids handling, chemical transfer, off-loading operations, waste acids, alkalis, distillates, and general process duties where reliability, maintainability, and ANSI standardization are required.