10 differences between rubberized lobe pump and sanitary pump

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    Framed within the category of rotary volumetric pumps, lobe pumps stand out for their excellent performance for the transfer of fluids, with multiple applications within the industrial field.

    Are you looking for a new high-performance pump for your business? To help you choose, below we review for you the main differences between this excellent fluid pumping equipment:

    1. Working pressure

    Industrial lobe pumps are indicated for working pressures of up to 8 bar. For their part, sanitary lobe pumps admit higher pressures, up to 12 bar.

    2. Flow

    These two types of lobe pumps stand out for their ability to maintain a constant and pulsation-free working flow. Industrial lobe pumps are indicated for flow rates from 10 to 120 m3 / h. For higher flow rates, it’s more recommended a sanitary lobe pump, capable of operating with flow rates from 500 to 40,000 l / h.

    3. Materials

    Within the current catalogue of lobe pumps like the one from boyser.com, we can choose between different types of materials, depending on the level of demand for the work to be carried out. Industrial lobe pumps are made of ferritic stainless steels or austenitic stainless steels.

    For sanitary lobe pumps, lobe pump manufacturers choose high-quality steels, such as AISI-316L stainless steel, with chromium nickel austenitic molybdenum, noted for its high resistance to corrosion and high temperatures.

    4. Operational characteristics

    Industrial lobe pumps are capable of operating smoothly with fluids with viscosities of up to 100,000 cps, allowing the passage of solid particles of up to 50 millimetres. If we need to work with denser fluids, sanitary lobe pumps support viscosities up to 200,000 cps.

    5. Cleaning and maintenance

    From an operational point of view, lobe pumps are an excellent choice due to its low maintenance costs. In case of wear of its parts, the design of this pump allows easy access to its interior to proceed with its replacement. Sanitary lobe pumps, in addition, can be mounted both vertically and horizontally, depending on our needs.

    6. Types of rotors

    The operating principle of industrial lobe pumps is based on the movement of their two rotors, which can be both metallic and rubberized. For sanitary pumps, we find models with trilobar or multiple rotors.

    7. Connections and closings

    Industrial lobe pumps have industrial, sanitary or quick connections and industrial mechanical seals, to ensure the seal of the shaft. In sanitary lobe pumps, manufacturers use silicon carbon connections and sanitary mechanical seals to improve their performance.

    8. Hygiene

    Sanitary lobe pumps are EHEDG certified, granted by the European Hygienic Engineering and Design Group to those teams capable of meeting the exacting hygiene standards required in sectors such as the food or chemical industry.

    9. Industrial lobe pumps: recommended uses

    The robust and compact design of these industrial pumps, together with their operational characteristics, make industrial lobe pumps a highly recommended solution for the treatment of sludge and wastewater, derived from petroleum and acidic or abrasive fluids, such as detergents, slips or inks. It also highlights its use within the food sector, for the transfer of wine, oils, pasta or concentrates.

    10. Applications for sanitary lobe pumps

    Regarding sanitary pumps like the one you will find in Boyser.com, their excellent hygienic conditions make them a perfect choice for sectors such as the food, cosmetic, chemical, and pharmaceutical industries.


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