Alfa Laval SRU

Gentle, hygienic design

With their high-precision rotors and low-shear operation, our rotary lobe pumps ensure the gentle movement of delicate products. The pumps offer a number of features that maximize cleanability, and their construction provides compliance with the world’s leading hygienic standards. 

Modular pump design

The rotary lobe pumps feature a modular construction. This design feature increases flexibility and reduces spare parts inventory. 

Universal mounting

To allow high flexibility when fitting the pump into a production line, all of the rotary lobe pumps can be mounted in either a vertical or horizontal port position (with the exception of the larger SX models). 

Improved drainability

All of the rotary lobe pumps can be drained easily when mounted in vertical port position. In the case of the OptiLobe and SX pumps, cusps are retained in vertical configurations for greater efficiency.

Easy seal retrofit

The seals of the rotary lobe pumps are designed for quick and simple up-grading. The broad range of seals includes many seal types and configurations, which can be tailored to your need and application. 

Robust gearbox construction

All rotary lobe pumps are fitted with a robust gearbox incorporating heavy-duty taper roller bearings and torque locking assemblies that allow for easy maintenance and high reliability. The pump rotors are driven by a high-precision involute spline drive. 

CIP and SIP

All rotary lobe pumps are suitable for use in both Cleaning-in-Place (CIP) and Sterilization-in-Place (SIP) applications. 

Standards and approvals

All of the rotary lobe pumps are compliant with the EHEDG, 3A and FDA hygienic standards. In addition, the SX and SRU pumps have ATEX approval for use in explosive environments.

Alfa Laval rotary lobe pump SRU

The SRU is Alfa Laval’s core rotary lobe pump. In addition to handling the widest range of temperatures and pressures, SRU pumps offer the most extensive options in the rotary lobe pump portfolio. Their heavy-duty construction and unparalleled flexibility make them an engineered solution for the most demanding applications. Among the many SRU options are saddles and jackets for heating/cooling the pump head and an integrated pressure relief valve and rectangular inlet for pumping high viscosity fluids. A wide selection of standard seal options is available, together with proprietary seals to suit most applications. There are tri-lobe and bi-lobe rotors to choose from, which can be manufactured from various materials. Bi-lobe alloy rotors can be used for closer tolerances and higher efficiencies on low-viscosity products. Higher surface finishes up to 0.5 Ra are also available, as well as electro-polishing.