Description
Sulzer Centrifugal Between bearing pumps GSG low flow pump -The reliable API 610 solution for low flow services
Key Technical Specifications:
| Capacities | Up to 35 m3/h / 155 US gpm |
| Heads | Up to 1’800 m / 5’900 ft |
| Pressures | Up to 200 bar / 2’900 psi |
| Temperatures | From -29 °C to +200 °C / -20 °F to +400 °F |
| Flange ratings | 600#, 900#, 1500# and 2500# |
| Maximum speed of rotation | Up to 3’600 rpm |
Why Choose Sulzer GSG Low Flow Pump?
The Sulzer GSG Low Flow pump is a specialized version of the trusted GSG barrel pump , engineered specifically for high-pressure applications where flow rates are minimal but reliability is critical. Designed to handle harsh process conditions and precise system demands , it offers exceptional hydraulic stability , thermal control, and safety in compact , low-flow service environments-making it ideal for refinery and chemical processes that operate under tight performance windows.
Key Technical Specifications
Pump Type: Between-bearings , multistage , radially split barrel pump (BB5)
Flow Range: Optimized for low flow ; typically < 50 m³/h
Casing Design: Barrel-type casing with diffuser-style hydraulics
Standards: Fully compliant with API 610 (BB5) , ISO 13709
Materials:
– Casing: Forged alloy steel or stainless steel
– Impellers/Diffusers: High-grade stainless or duplex steel
Shaft Bearings: Sleeve and tilting pad thrust bearings with forced lubrication
Sealing System: API 682 mechanical seals with Plan 53 or 54 options
Design & Functionality
Multistage diffuser-style design ensures low NPSH requirements and excellent efficiency
Barrel casing construction handles extreme pressure safely and minimizes vibration
Customized hydraulic design tailored to low flow, high head performance
Optional balance drum for axial thrust management
Modular rotor and cartridge assembly simplifies maintenance
Adaptable nozzles and mounting orientations for integration in complex layouts
Typical Applications
High-pressure boiler feedwater systems with limited flow demand
Hydroprocessing and catalytic reforming units in refineries
Chemical injection or sampling in petrochemical processes
Condensate service in compact high-temperature systems
Water or solvent transfer in pressurized low-capacity loops
Additional Features
Excellent hydraulic control at low flow to avoid recirculation and wear
High-efficiency internals reduce energy consumption even under minimal load
Long life with low vibration and axial thrust balancing
API 610 and API 682 ready with full auxiliary sealing systems
Compact footprint with vertical and horizontal installation flexibility
Built for precision, the Sulzer GSG Low Flow pump is a high-pressure solution that thrives where most pumps struggle. With robust construction, tight hydraulic control, and barrel-style safety, it delivers reliable performance for demanding low-flow, high-head applications in critical energy and process systems. When the margin for error is zero, GSG Low Flow delivers.
