Fully Customized BB Series Between-Bearing API 610 Pumps

The BB Series are between-bearing centrifugal pumps fully compliant with API 610 11th Edition, including models BB1, BB2, BB3, BB4, and BB5. Featuring axially or radially split casings and a rigid rotor system, they deliver exceptional stability, high pressure capability and long service life. Suitable for high-temperature, high-pressure and harsh process conditions.

BB (Between Bearings) series comprises five models: BB1, BB2, BB3, BB4 and BB5.

As horizontal between-bearing centrifugal pumps, they are engineered for high-pressure, high-flow, and long‑cycle continuous‑duty applications.

We optimize hydraulic structures using advanced hydraulic design models to maximize pumping efficiency, and offer full customization services to meet specific project requirements.

BB1 Type API 610 Between-Bearing Pump - Axially Split Casing

BB1

BB2 Type API 610 Between-Bearing Pump - Radially Split Casing

BB2

BB3 Type API 610 Multistage Between-Bearing Pump

BB3

BB4 Type API 610 High-Pressure Between-Bearing Pump

BB4

BB5 Type API 610 Barrel Between-Bearing Pump

BB5

BB Series (Between Bearings) Pump Comparison

API 610 compliant | High-pressure & long-cycle continuous operation

Model	Casing Type	Stages	Key Design Features	Performance Range	Advantages	Typical Applications
BB1	Axially split	Single / Two-stage	Horizontally split, single/double suction, foot/centerline mounted	Flow: 100–6000 m³/h; Head: ≤300 m; Pressure: ≤4.0 MPa; Temp: -80~200℃	Easy maintenance, high flow stability, low vibration	Crude oil transfer, cooling water circulation, general process services
BB2	Radially split	Single-stage	Double volute, double suction impeller, centerline mounted	Flow: 10–6000 m³/h; Head: ≤700 m; Pressure: ≤15 MPa; Temp: -80~450℃	High pressure & temperature resistance, good thermal stability	Refined product transfer, high-pressure process feeding, boiler circulation
BB3	Axially split	Multistage	Symmetric impellers, axial force self-balanced	Flow: 10–1500 m³/h; Head: 300–2200 m; Pressure: ≤16 MPa; Temp: -45~200℃	High head, high efficiency, easy overhaul, long service life	Boiler feed water, pipeline boosting, oilfield water injection
BB4	Radially split	Multistage	Segmental type, single casing, balance drum/disc	Flow: 5–800 m³/h; Head: 500–3000 m; Pressure: ≤30 MPa; Temp: -40~250℃	Compact structure, high-pressure capability, cost-effective	High-pressure solvent transfer, polymer injection, chemical processes
BB5	Radially split (barrel)	Multistage	Double casing, full pull-out cartridge, inner barrel design	Flow: 5–900 m³/h; Head: 800–3500 m; Pressure: ≤40 MPa; Temp: -50~425℃	Ultra-high pressure & temperature, extreme reliability, zero leakage	Residue feeding, hydrocracking, offshore high-pressure injection

1. The above parameters are for reference only; please contact us for details. Our company reserves the final right of interpretation.
2. All models comply with API 610 standards and can be customized according to specific project requirements.

How to Select the Right BB Series API 610 Pump?

Selecting the appropriate BB Series API 610 centrifugal pump requires a comprehensive evaluation of operating conditions, process media, installation environment, and maintenance demands. Key factors include flow rate, head, operating pressure, temperature, fluid properties, and installation space.

Choose BB1 for large flow, medium pressure, and low‑head services where easy maintenance and stable operation are required.
Choose BB2 for high pressure, high temperature, and single‑stage high‑efficiency applications with balanced radial forces and strong thermal stability.
Choose BB3 for medium‑to‑high head, multistage, medium‑pressure services that require easy overhaul and high efficiency.
Choose BB4 for high‑head, high‑pressure industrial and oilfield applications requiring a compact, cost‑effective design.
Choose BB5 for ultra‑high pressure, high temperature, and extreme critical services such as hydrocracking and offshore injection.

What are the main advantages of CME BB series between-bearing API 610 pumps?

Fully compliant with API 610 (ISO 13709) standards
Between-bearing design for maximum stability
Axially/radially split casings for easy maintenance
High pressure, high efficiency and low vibration
Ideal for critical heavy-duty process applications

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