Description
Sulzer Centrifugal Between bearing pumps BBT and BBTD between bearings two stage pumps -Two stage barrel pumps for the toughest services
Key Technical Specifications:
| Capacities | Up to 2,300 m3/h / 10,000 US gpm |
| Head | Up to 760 m / 2,500 ft |
| Pressures | Up to 100 bar / 1,450 psi |
| Temperatures | Up to 425 °C / 800 °F |
| Discharge sizes | From 150 to 250 mm / 6 to 10 inches |
| Maximum speed of rotation | Up to 3,600 rpm |
Why Choose Sulzer BBT and BBTD Two-Stage Pumps?
The Sulzer BBT and BBTD series are high-performance between -bearings , double-volute , two -stage centrifugal pumps engineered for demanding industrial and power generation applications. Designed for high-head , moderate-to-high flow services , these pumps offer superior hydraulic efficiency , low vibration , and exceptional reliability. Their robust construction and optimized internal geometry make them ideal for critical operations where uptime and performance matter.
Key Technical Specifications
Pump Type: Between-bearings , horizontally split , two-stage centrifugal pumps
Stages: 2 closed impellers (BBT) or 2 back-to-back impellers (BBTD)
Casing Design: Axially split volute casing for easy inspection and alignment
Standards Compliance: API 610 (BB2) , ISO 13709
Materials of Construction:
Casing: Carbon steel , stainless steel , duplex or custom alloys based on fluid
Impellers: Cast or precision-machined closed impellers
Shaft: High-strength stainless steel with replaceable sleeves
Bearings: Sleeve or tilting-pad bearings with forced or ring-oil lubrication
Seal Options: API mechanical seal systems with plan arrangements
Design & Functionality
Back-to-back impeller design (BBTD) for balanced axial thrust and longer bearing life
Optimized volute geometry for smooth flow and low hydraulic noise
Axially split case enables rapid access for inspection and overhaul
Double-stage configuration increases head without excessive speed
Flexible nozzle orientation and baseplate mounting simplify system integration
Designed to accommodate thermal growth in high-temperature services
Typical Applications
Boiler feedwater systems in power plants
High-pressure process transfer in refineries and petrochemical plants
Condensate and water injection services
Clean or lightly contaminated fluid handling in heavy industry
High-head water transport and circulation systems
Additional Features
Double-volute casing minimizes radial thrust and extends bearing life
High efficiency across a broad operating range
Heavy-duty rotor construction resists dynamic forces and unbalance
Designed for both continuous and cyclic duty
Easy retrofit and upgrade options for changing process needs
Built to perform under pressure , Sulzer’s BBT and BBTD two-stage pumps combine proven engineering with modern hydraulic design to deliver superior head and reliability in mission-critical services. Whether powering boiler systems or managing demanding industrial fluids , these pumps ensure consistent , long-life performance with minimal maintenance.
