Sulzer - High-Pressure Stage Casing Pump

This high-pressure stage casing pump features a modular design for optimal efficiency and adaptability in demanding applications. Commonly used as a feedwater or condensate extraction pump in gas-fired combined-cycle power plants, it is also suitable for desalination, biomass, and industrial power plants. The pump is engineered for high efficiency, low noise, and reliable operation under rapid temperature variations. Key construction elements include large suction branches for optimized inlet flow, a stiff shaft for high critical speeds, and a hydraulic thrust balancing system. Materials such as carbon steel, chrome steel, and duplex steel are used for durability. The design allows easy maintenance and supports both main and auxiliary boiler feedwater duties.