140 years of engineering knowledge continue to shape our CUP-BB5 Pumps

09/02/26

These radially split, multistage barrel pumps are widely specified for critical high-pressure applications where safe pressure containment, long operating life, and reliable continuous operation are essential.

Drawing on the engineering heritage of Weir Pumps, Union Pumps, Guinard, and David Brown, we’ve continued to refine the proven BB5 design with advances in computational hydraulics, materials, manufacturing, and rotor dynamics to meet the latest API 610 and API 682 standards.

Today, our CUP-BB5 range supports refinery process services, pipeline operations, produced and seawater injection, boiler feedwater systems, and hydrocarbon processing. Multiple hydraulic configurations and engineered-to-order solutions allow each pump to be closely matched to its operating conditions, helping you achieve dependable long-term performance and efficiency

Continuous technology improvement

The long-term reliability of our CUP-BB5 pumps comes from hundreds of engineering decisions. Optimised rotor dynamics, low shaft deflection, precision-cast impellers and advanced hydraulic balancing systems all contribute to stable, reliable operation throughout the pump's service life.

We also continue to invest in research and development so the CUP-BB5 can meet emerging application challenges, such as ultra-high-pressure injection duties, while retaining the proven design principles our customers rely on.

Supporting you through the asset lifecycle

Maintainability is built into the CUP-BB5 design. The cartridge can be removed without disturbing the barrel casing or connected pipework, helping reduce maintenance time during planned outages. Optional spare cartridges, re-rate capability and our ClydeUnion Pumps Shear Ring locking system can also simplify upgrades and reduce downtime.

Beyond the pump itself, we're here to support you throughout the asset lifecycle. Our global network of service centres and field engineers provides commissioning, maintenance, upgrades, re-rates, OEM replacement parts and expert application support to help maximise asset availability, efficiency, and lifecycle value.

As we celebrate 140 years of ClydeUnion Pumps engineering excellence, the CUP-BB5 continues to demonstrate how continuous refinement and accumulated application knowledge help deliver reliable high-pressure pumping solutions for today's demanding operational environments.

Want to find out more? Discover how our CUP-BB5 range combines 140 years of engineering heritage with continuous innovation to help you achieve reliable high-pressure performance throughout the asset lifecycle.