Description
Sulzer Centrifugal Between bearing pumps GSG diffuser style barrel pump – Best value barrel pump to reduce costs in your plant
Key Technical Specifications:
| Capacities | Up to 900 m3/h / 4,600 US gpm |
| Heads | Up to 2,600 m / 10,000 ft |
| Pressures | Up to 300 bar / 4,500 psi |
| Temperatures | From -30 °C to +425 °C / -20 °F to +800 °F |
| Discharge sizes | From 40 to 200 mm / 1.5 to 8 inches |
| Maximum speed of rotation | Up to 3,600 rpm |
Why Choose Sulzer GSG Diffuser-Style Barrel Pump?
The Sulzer GSG is a high -pressure , multistage , between-bearings barrel pump designed for the most demanding applications in the oil & gas , petrochemical , and power industries.
With its robust barrel-type casing and diffuser-style hydraulics , the GSG pump delivers outstanding performance in high-pressure , high -temperature environments , making it ideal for boiler feedwater , hydrocarbon processing , and water injection systems.
Key Technical Specifications
Pump Type: Radially split , multistage , diffuser-style centrifugal pump
Casing Type: Barrel-type with axial or radial nozzle options
Impeller Arrangement: Radial , closed impellers with interstage diffusers
Standards Compliance: API 610 (BB5) , ISO 13709
Materials of Construction:
Casing: Carbon steel , alloy steel , stainless steel , or duplex
Impellers & Diffusers: Stainless steel, duplex, or custom alloys
Shaft: High-strength alloy steel with replaceable sleeves
Bearings: Sleeve and tilting pad thrust bearings with forced lubrication
Sealing: API 682-compliant mechanical seals with full seal support systems
Design & Functionality
Radially split barrel casing ensures containment of high internal pressures
Interstage diffusers provide controlled , efficient hydraulic energy transfer
Precision-aligned rotor assembly reduces vibration and wear
Optional balance drum or balance piston to control axial thrust
Cartridge-type assembly enables modular installation and servicing
Customized nozzle orientation for flexible plant integration
Typical Applications
Boiler feedwater systems in conventional and combined-cycle power plants
High-pressure water injection in oilfields
Refinery services (hydrotreating , hydrocracking)
Amine and glycol circulation
Condensate pumping and pressurized fluid transfer
Additional Features
High-efficiency diffuser stages reduce energy costs
Rugged barrel design ensures safe operation under extreme pressures
Horizontal or vertical installation possible depending on site requirements
Designed for low vibration and extended MTBF
Fully API-compliant auxiliary systems for sealing and lubrication
Engineered for extreme conditions , the Sulzer GSG is the go-to barrel pump for high-pressure , high-reliability operations in energy and process industries. Its advanced diffuser-style hydraulics , API 610 compliance , and robust mechanical architecture guarantee peak performance and long service life even in the harshest environments.
