Rotary lobe pumps

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Rotary lobe pumps

Suitable for low, medium and high-viscosity media, Alfa Laval rotary lobe pumps are the fulfilment of more than 50 years of commitment to rotary lobe pump technology. Their gentle pumping action and reliable performance are the result of continuous development, which is based upon years of experience and carried out at our advanced production and R&D facilities.

Our rotary lobe pump portfolio comprises three ranges: SX, SRU and OptiLobe. Each of these is robustly constructed and offers Alfa Laval’s high
standards of quality and reliability, and each is positioned for a different type of demand. Collectively, they provide operating economy and high flexibility of use.


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
Our rotary lobe pumps
feature a modular construction.
This design
feature increases flexibility
and reduces spare parts
Universal mounting
To allow high flexibility
when fitting the pump into
a production line, all of our
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 our rotary lobe pumps
can be drained easily when
mounted in vertical port
position. In the case of our
OptiLobe and SX pumps,
cusps are retained in
vertical configurations for
greater efficiency. 
Easy seal retrofit
The seals of our rotary
lobe pumps are designed
for quick and simple upgrading.
Our broad range
of seals includes many
seal types and configurations,
which can be
tailored to your need and
Robust gearbox
Our 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.
Our rotary
lobe pumps
are suitable for use in both
Cleaning-in-Place (CIP)
and Sterilization-in-Place
(SIP) applications.
Standards and

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