Lobe pumps

Lobe pumps are used for transferring liquids, particularly when the pumped medium is viscous or contains solids. With different housing, rotor and seal configurations, lobe pumps can be used in applications across the food, beverage, pharmaceutical, cosmetics and chemical industries.

Teknopump supplies OMAC lobe pumps for a wide range of industrial applications. OMAC's product range includes both general-purpose pump series and pump series specifically designed for hygienic processes.

Typical applications

Lobe pumps are used in the food, beverage, pharmaceutical, cosmetics and chemical industries for transferring various viscous liquids and products, such as syrups, sauces, dairy products, oils and wine. OMAC's range also includes solutions for highly viscous products as well as special designs for semi-solid products and mixtures containing soft solids.

How does a lobe pump work?

A lobe pump is a positive displacement pump in which two rotors rotate in opposite directions inside the pump casing. A lobe pump is a positive displacement pump in which two rotors rotate in opposite directions inside the pump casing. The spaces between the rotors and the pump casing fill with liquid on the suction side and carry it to the discharge side.

The suitability of a pump depends in practice on the properties of the pumped medium, the required flow rate and pressure, as well as the operating temperature and material compatibility. The choice of rotors and seals also affects which products and processes the pump is suitable for.

OMAC lobe pumps

OMAC's range includes several lobe pump series for different applications and requirements. The choice of pump series depends on factors such as the required capacity, properties of the pumped medium, hygiene requirements and pump design.

OMAC Lobe Pumps Technical Manual

OMAC B

The B series is OMAC's extensive range of lobe pumps for various liquid transfer applications. The series offers several rotor, seal and material options, as well as special configurations for highly viscous products, heated covers, pressure relief valves and aggressive liquids.

The B series comprises 16 models with flow rates ranging from 0.05 to 200 m³/h. The HP version is designed for higher-pressure applications, with pressures of up to 20 bar.

For highly viscous products, B series models with an enlarged inlet are available for pumping semi-solid pastes and mixtures containing soft solids.

Product brochure: OMAC Series B Lobe Pumps

OMAC BE

The BE series is a monobloc lobe pump in which the motor can be directly coupled to the pump. The series provides a compact solution for transferring various liquids and viscous products.

The BE series is available in configurations including an enlarged inlet, heated construction and pressure relief valve, depending on the application.

Product brochure: OMAC Series BE Monobloc Lobe Pumps

OMAC BF

OMAC BF series sanitary lobe pumps are specifically designed for applications in the food and pharmaceutical industries.

The parts in contact with the pumped medium are made of AISI 316L stainless steel. The pump casing features integrated Tri-Clamp connections. The smooth, crevice-free design facilitates CIP cleaning. Surface finishes below Ra 0.6 µm are also available. FDA-compliant EPDM and PTFE seal materials, as well as different rotor materials, are available depending on the application.

Product brochure: OMAC Series BF Sanitary-Hygienic Lobe Pumps

OMAC C

The C series is part of OMAC's range of sanitary lobe pumps. It is specifically designed for food and pharmaceutical applications where a high level of hygiene, cleanability and hygienic design is required.

C series lobe pumps are EHEDG, A3 and Ex certified. Parts in contact with the pumped medium are made of 1.4404 or 1.4435 stainless steel.

Product brochure: OMAC Series C-CF Sanitary-Hygienic Lobe Pumps

OMAC BA/BB

The BA/BB series has been developed from the B series with a particular focus on easier cleaning. The design includes a flat cover, features that reduce product accumulation, and construction that supports self-draining and CIP cleaning.

Product brochure: OMAC Series BA-BB Lobe Pumps

How to choose a lobe pump?

The selection of a suitable lobe pump depends on several factors, including the following.

Pumped medium
What liquid or product is being pumped, and does it contain solids? The properties of the pumped medium may also affect the choice of pump materials and seals.

Viscosity
How viscous is the pumped medium at the normal operating temperature? Viscosity affects pump sizing and the required rotational speed.

Flow rate and pressure
How much liquid needs to be transferred, and what discharge pressure does the pump need to provide?

Temperature
What are the normal and possible maximum temperatures of the pumped medium?

Hygiene requirements
Is the pump used in a food, pharmaceutical or other process where specific requirements apply to hygienic design and cleanability?

Materials and seals
The materials of the wetted parts, rotors and seals are selected according to the pumped medium and operating conditions.

ATEX requirements
Is the pump intended for an area where an ATEX-compliant design is required?

Downloads

OMAC Lobe Pumps Technical Manual (PDF)

OMAC Series B Lobe Pumps (PDF)

OMAC Series BE Monobloc Lobe Pumps (PDF)

OMAC Series BF Sanitary-Hygienic Lobe Pumps (PDF)

OMAC Series C-CF Sanitary-Hygienic Lobe Pumps (PDF)

OMAC Series BA-BB Lobe Pumps (PDF)

Need help selecting a lobe pump?

Tell us about the pumped medium, required flow rate and pressure, as well as any temperature or hygiene requirements. We can help you select a lobe pump suitable for the application, along with the appropriate materials and accessories.

Contact us