Pompe volumetriche a trascinamento magnetico Belli Firenze

Hollow disk pump with magnetic pump drive type “MAG”

Positive displacement hollow disk pump with magnetic drive. The magnetic drive coupling transmits the motion to the pump shaft thanks to the use of powerful permanent magnets. Torque transmission occurs without any contact between mechanical parts and the containment canister totally encapsulates the pump liquid from the external environment avoiding any risk of leakage. The pump is self-priming with high dry suction capability, fully reversible and designed for maximum reliability in the most critical applications where the leakage of the seal is not tolerable. Toxic substances, resins, isocyanates and chemicals transfers or process are typical applications. These pumps have been specifically designed with the use of the magnetic drive coupling, and not like a retro-fit of standard pumps as many competitors do.

Technical features

Exclusive technology for any application

Self-priming

Self-priming

Automatically priming with vacuum creation in suction side.

Reversible

Reversible

Fully reversible with same technical features in both directions of rotation.

Elastic

Elastic

The elastic device of the oscillating hollow disc allows the passage of solid parts.

Leaks proof technology

Leaks proof technology

The magnetic coupling completely seals the pump without using any mechanical seal.

Low rotation speed

Low rotation speed

The low operating speed does not emulsify the liquids and guarantees high reliability.

Atex zone 1 standards

Atex zone 1 standards

Atex zone 1 compliance for all applications in explosion proof areas.

Working principle

Elastic, simple, robust

The oscillating hollow disk moves inside the body generating two volumes, the suction volume and the discharge volume, separated by the diaphragm. The fluid passes through the openings of the pump body. The hollow disk is kept pressed against the walls of the body by a spring which makes the system elastic and allows the passage of solid bodies. Compared to competitor models, the new range of hollow disk pumps developed by Belli Meccanica starting from 2008, has wider sliding surfaces and reduced eccentricity of the disk. These technical improvements ensure excellent performance and superior reliability.

Technical features of the hollow disk MAG series pumps

The magnetic drive coupling transmits the motion to the pump shaft thanks to the use of powerful permanent magnets. Torque transmission occurs without any contact between mechanical parts and the containment canister totally seals the pump from the external environment avoiding any risk of leakage.

Bidirectional high capacity psv bypass valve with replaceable valves and counter valves

Body sealed with O-rings (NBR, VITON, PTFE, KARLEZ), no liquid or flat gaskets

Hollow disk with guided bushing bearing

Hollow disk with guided bushing bearing

In-line coupling: No misalignment, No vibrations, Longer bearings life

Rear structure sealed with o-rings (NBR, VITON, PTFE, KARLEZ), no use of liquid gaskets or flat gaskets

Magnetic drive coupling with cobalt-samarium permanent magnets, no use of any type of seal, total absence of leaks

Heavy duty shaft supported on bushing bearing with replaceable hardened wearing bushing

Available: Atex electric motor, Manual speed variator, VFD inverter variator

  • Bidirectional high capacity psv bypass valve with replaceable valves and counter valves

  • Body sealed with O-rings (NBR, VITON, PTFE, KARLEZ), no liquid or flat gaskets

  • Hollow disk with guided bushing bearing

    Hollow disk with guided bushing bearing

  • In-line coupling: No misalignment, No vibrations, Longer bearings life

  • Rear structure sealed with o-rings (NBR, VITON, PTFE, KARLEZ), no use of liquid gaskets or flat gaskets

  • Magnetic drive coupling with cobalt-samarium permanent magnets, no use of any type of seal, total absence of leaks

  • Heavy duty shaft supported on bushing bearing with replaceable hardened wearing bushing

  • Available: Atex electric motor, Manual speed variator, VFD inverter variator

     
    FaLang translation system by Faboba

    Performances - Hollow disk MAG Series pumps

    SINGLE BODY

    SIZE Ø PIPES FLOW MAX MOTOR POWER
    M 40 1- 1/4" - 2" 5000 l/h kW 1,1 - 1,5
    M 60 2" - 2-1/2" 11000 l/h kW 1,5 - 2,2
    M 70 2- 1/2" 20000 l/h kW 2,2 - 3
    M 85 3" 30000 l/h kW 4 - 7,5
    M 100 4" 45000 l/h kW 7,5 - 11

    Performances:

    • MAX OPERATING TEMPERATURE:: 250°C
    • MAX LIQUID VISCOSITY: 100000 cSt
    • MAX DIFFERENTIAL PRESSURE: 8 Bar(g) FOR STANDARD VERSION e 12 Bar(g) FOR HIGH PRESSURE VERSION
    • MAX DRY SUCTION CAPABILITY: -0,9 Bar (9 meters water column)
    • ROTATION SPEED RANGE: 80-350rpm

    Materials range - Hollow disk MAG Series pumps

    TYPE
    IMPELLER/SHAFT
    COVER/BODY
    BASE
    FIELD OF APPLICATION
    1 CARBON STEEL CAST IRON GJL250 CAST IRON GJL250
    PETROLEUM PRODUCTS, DIESEL, PETROL, KEROSENE, RFO HEAVY OIL, CRUDE OIL, BITUMEN, PARAFFIN, PAINTS, GLUES, RESINS, ISOCYANATE, SOLVENTS, FATS, OILS, PALM OIL, MELASSE, STARCH, WASTE, EXHAUSTED OIL, EXHAUSTED OIL
    2 INOX STEEL  BRONZE B14 CuSn6 CAST IRON GJL250
    SOAP, PATCHES, OIL WATERS, LUBRICANTS LIQUIDS, SOLVENTS
    5 INOX STEEL INOX STEEL CAST IRON GJL250
    OILS, BASIC LIQUIDS, WATER-BASED PAINTS, EMULSIONS, SURFACTANTS, GLUCOSE, SYRUP
    7 INOX STEEL INOX STEEL INOX STEEL
    EXTRA VIRGIN OLIVE OIL, FOOD LIQUIDS, CHOCOLATE, GLUCOSE, SYRUP, CORROSIVE PRODUCTS, SOAP, SURFACTANTS
    8 INOX STEEL CAST IRON GJL250 CAST IRON GJL250
    PETROLEUM PRODUCTS, DIESEL, PETROL, KEROSENE, RFO HEAVY OIL, CRUDE OIL, BITUMEN, PARAFFIN, PAINTS, GLUES, RESINS, ISOCYANATE, SOLVENTS, FATS, OILS, PALM OIL, MELASSE, STARCH, WASTE, EXHAUSTED OIL, EXHAUSTED OIL

    Fields of application - Hollow disk pumps "Mag" series

    • Resins - paints - inks - solvents - isocyanates - polyol

    • Petroleum products - petrol - additives - fuels

    • Toxic chemicals

    • Glues - adhesives - products that cause leaks in mechanical seals

    >> Go to the application fields page

    MAG series pump - technical features and advantages

    Magnetic drive coupling

    Torque transmission occurs without any contact between mechanical parts and the containment canister totally seals the pump from the external environment avoiding any risk of leakage.

    In-line coupling

    The in-line coupled arrangement avoids any type of misalignment between pump and gearmotor, vibrations and overloads on the bearings.

    Pump body with sliding surfaces and reduced eccentricity of the disk

    Higher suction capacity, less wear and smoother operation compared to the old hollow disk pump models and competitor models.

    Hollow disk with guided bushing

    The disk bushing is designed with an external guide that ensures effective support on the shaft and avoids the use of the spring end cup.

    Flanges according to UNI ISO PN10

    The flange connections are standardized UNI ISO PN10, adapters for ANSI RF150 and other types of fittings are available on request.

    Heating jacket in option

    Installation of pump body heating jacket and rear magnetic coupling heating jacket for pumping hot liquids. The pump jacket is equipped with threaded connections for hot water, steam or diathermic oil line.

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