Hollow disk pump C series

Positive displacement hollow disk pump with internal seal. The seal is located internally and the pump shaft is supported on roller bearings. This configuration makes the pump compact and economical but providing good performances. Self-priming with high dry suction capacity, reversible, it tolerates solid parts, reliable and robust in any type of application. This pump model is available in single body, double body or triple body versions and it’s also available in stainless steel.

Hollow disk pump type C versions

For increasing the flowrate 

"C" Series - Single body

"C" Series - Double body

"C" Series - Triple body

Technical features

Exclusive technology for any application

Internal seal

Internal seal

Simple structure with compact dimensions.

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.

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 C series pumps

The seal is set internally and the pump shaft is supported by roller bearings. This configuration makes the pump compact and economical, without sacrificing optimal performance.

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

Robust shaft with oversized bearings

Available seals: Mechanical Double viton ring or lip seal Inox bellow seal

Oversized bearings

Oversized bearings

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

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

  • Robust shaft with oversized bearings

  • Available seals: Mechanical Double viton ring or lip seal Inox bellow seal

  • Oversized bearings

    Oversized bearings

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

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

    Available seals for C pump series

     

    Mechanical seal

    Mechanical seal

    Double viton ring or lip seal

    Double viton ring or lip seal

    Inox bellow mechanical seal

    Inox bellow mechanical seal

    FaLang translation system by Faboba

    Performances - Hollow disk C series

    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

    DOUBLE BODY

    SIZE Ø PIPES FLOW MAX MOTOR POWER
    D 90 4" 45000 l/h kW 7,5 - 11
    D 100 4" 70000 l/h kW 15 - 18,5
    D 140 5" 120000 l/h kW 18,5 - 22

    TRIPLE BODY

    SIZE Ø PIPES FLOW MAX MOTOR POWER
    T 110 4" - 5" 65000 l/h kW  15 - 18,5
    T 130 5" 100000 l/h kW 18,5 - 22
    T 160 6" 200000 l/h kW 37 - 45
    T 250 8"-10" 500000 l/h kW 90

    Materials range - Hollow disk C Series pump

    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 STAINLESS STEEL BRONZE B14 CuSn6 CAST IRON GJL250
    SOAP, PATCHES, OIL WATERS, LUBRICANTS LIQUIDS, SOLVENTS
    5 STAINLESS STEEL STAINLESS STEEL CAST IRON GJL250
    OILS, BASIC LIQUIDS, WATER-BASED PAINTS, EMULSIONS, SURFACTANTS, GLUCOSE, SYRUP
    7 STAINLESS STEEL STAINLESS STEEL STAINLESS STEEL
    EXTRA VIRGIN OLIVE OIL, FOOD LIQUIDS, CHOCOLATE, GLUCOSE, HONEY, SYRUP, CORROSIVE PRODUCTS, SOAP, SURFACTANTS
    8 STAINLESS 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

    Performances:

    • MAX OPERATING TEMPERATURE:: 250°C
    • MAX LIQUID VISCOSITY: 500000 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

    Fields of application - Hollow disk pumps - "C" series

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

    • Petroleum products-petrol-diesel-fuels-biodiesel-bitumen

    • Vegetable oils - extra virgin olive oil - animal and vegetable fats - margarine - tallow - oleine

    • Surfactants-soaps-additives-emulsions-chemicals

    • Glues - starch - adhesives

    • Glucose - syrups - molasses

    • Exhausted oils-spent solvents-sludge-waste products

    >> Go to the application fields page

    C series pump - technical features and advantages

    Internal seal

    Simple and less expensive structure with compact dimensions.

    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

    The pump body heating jacket is available for pumping hot liquids. The pump jacket is equipped with threaded connections for hot water, steam or diathermic oil line.

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