Varisco internal gear positive displacement rotary pumps

Varisco internal gear EC 1935-2004 pump

Positive displacement internal gear pump compliant with regulation EC 1935-2004 FCMs

Due to their mechanical and construction characteristics and their versatility in handling various viscosities, the Varisco positive displacement internal gear "V" pumps are primarily used for transferring products such as syrups, chocolate, oils, and molasses.

The study of special tolerances and specific machining clearances, chosen based on calculated velocities which derive from years of extensive cooperation with our customers, allow state of the art performances and ensure gentle handling of the product without shearing.

Internal gear pump working principle

The flow is generated by two gears: the rotor and idler, one inside the other, separated by a crescent. As the gears rotate, liquid is drawn into the spaces created between the gears and the crescent. When the gears mesh, the liquid is forced out of the pump. The result is a smooth flow of liquid and high capacity combined with compact size.

Key features and benefits

Why choose Varisco pumps for the Food & Beverage industry?

Varisco^TM internal gear 1935-2004 pumps offer an excellent balance between product quality and process efficiency, making them the preferred choice for applications in the chocolate sector and in food processing environments with low bacterial stagnation requirements.

Temperature always under control

In order to check the temperature of the pumped fluid, this series of pumps has heating chambers on the cover and around the axial seal that can be supplied with water, steam or diathermic fluid.

Easy maintenance operations

Front cover easy removal design for quick access to the idler bush and the type of shaft packing sealing fitted, allows low cost of ownership and easy maintenance operations.

Product gentle handling

The internal gear system creates cavities that move from the inlet to the discharge port to prevent the pumped liquid from being squeezed, mishandled or agitated and protect shear sensitive liquids from physical or molecular properties modifications. Thanks to a stable, controlled flow rate that is directly proportional to the rotational speed, these pumps enable accurate and repeatable dosing.

Compliance with EC Regulation 1935-2004

Varisco internal gear pumps comply with EU Regulation 1935-2004 are suitable for preliminary food-processing applications where high hygienic standards or CIP/SIP cleaning cycles are not required.

Reversibility

By inverting the direction of rotation the flow of liquid is reversed. Full performance is available in either direction of flow.

Reliable, robust and built for long life

Perfect handling of medium - high viscosity fluids, low peripheral speeds of the rotor, an external support with a large-sized roller bearing to support axial and radial loads in order to ensure a longer service life.

Technical data

Internal gear pumps represent an ideal solution for pumping chocolate, pastes, and high-viscosity food-grade fluids, thanks to their ability to ensure maximum product gentleness and operational reliability.

Performance data table

Pump Model	Ports (mm)	Ports (in)	Max Flow Rate (m³/h)	Max Pressure (bar)	Viscosity (mm²/s - cSt)	Max Speed (rpm)
V 25 - 2M SPK+F+R2+W2+X	40	1” 1/4	4,5	16	20 - 60.000	1750
V 25 - 2M SPK+R2+W2+X	40	1” 1/4	4,5	16	20 - 60.000	1750
V 25 - 2M ST6WK+F+R4+W2+X	40	1” 1/4	4,5	16	20 - 60.000	1750
V 25 - 2M ST6WK+R4+W2+X	40	1” 1/4	4,5	16	20 - 60.000	1750
V 25 - 2M ST6W+O2	40	1” 1/4	4,5	16	20 - 60.000	1750
V 25 - 2 SPG+R CHOCO	40	1” 1/4	3,15*	16	20 - 60.000	1750
V 30 - 2M SPK+F+R2+W2+X	40	1” 1/4	8,4	16	20 - 60.000	1750
V 30 - 2M SPK+R2+W2+X	40	1” 1/4	8,4	16	20 - 60.000	1750
V 30 - 2M ST6WK+F+R4+W2+X	40	1” 1/4	8,4	16	20 - 60.000	1750
V 30 - 2M ST6WK+R4+W2+X	40	1” 1/4	8,4	16	20 - 60.000	1750
V 30 - 2 SPG+R CHOCO	40	1” 1/4	5,88*	16	20 - 60.000	1750
V 50 - 3M SPK+R4+W2+X	50	2”	15,6	16	20 - 60.000	1150
V 50 - 3M ST6WK+R4+W2+X	50	2”	15,6	16	20 - 60.000	1150
V 50 - 3 SPG+R3 CHOCO	50	2”	10,92*	16	20 - 60.000	1150
V 60 - 2M SPK+R4+W2+X	50	2”	22	16	20 - 60.000	750
V 60 - 2M ST6WK+R4+W2+X	50	2”	22	16	20 - 60.000	750
V 60 - 2 SPG+R3 CHOCO	50	2”	15,4*	16	20 - 60.000	750
V 80 - 2M ST6WK+R4+W2+X	80	3”	42	16	20 - 60.000	600
V 80 - 2M SPK+R4+W2+X	80	3”	42	16	20 - 60.000	600
V 80 - 2 SPG+R3 CHOCO	80	3”	29,4*	16	20 - 60.000	600
V 100 - 2M ST6WK+R4+W2+X	100	4”	78	12	20 - 60.000	425
V 100 - 2M SPK+R4+W2+X	100	4”	78	12	20 - 60.000	425
V 100 - 2M ST6W	100	4”	78	12	20 - 60.000	425
V 100 - 2 SPG+R3 CHOCO	100	4”	54,6*	12	20 - 60.000	425
V 120 - 2M ST4W	125	5”	117	8	20 - 60.000	320

^{*Flow rate values refer to the maximum rotational speeds. Operating performance and maximum working pressures depend on the characteristics of the fluid and the pump model.}

Construction material data table

Pump Model	Shaft	Casing	Rotor	Idler	Seals	Bushings	Idler pin
V 25 - 2M SPK+F+R2+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Packing - PTFE CE 1935	Widia CE 1935	Widia CE 1935
V 25 - 2M SPK+R2+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Packing - PTFE CE 1935	Widia CE 1935	Widia CE 1935
V 25 - 2M ST6WK+F+R4+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Mechanical - Widia/Sic/FKM/AISI 316 - CE 1935	Widia CE 1935	Widia CE 1935
V 25 - 2M ST6WK+R4+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Mechanical - Widia/Sic/FKM/AISI 316 - CE 1935	Widia CE 1935	Widia CE 1935
V 25 - 2M ST6W+O2	Hardened steel	Ductile cast iron	Ductile cast iron	Cast iron	Packing - PTFE CE 1935	Bronze CE 1934	Case hardened steel CE 1935
V 25 - 2 SPG+R CHOCO	Hardened steel	Ductile cast iron	Ductile cast iron	Cast iron	Packing - PTFE CE 1935	Cast iron CE 1935	Case hardened steel CE 1935
V 30 - 2M SPK+F+R2+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Packing - PTFE CE 1935	Widia CE 1935	Widia CE 1935
V 30 - 2M SPK+R2+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Packing - PTFE CE 1935	Widia CE 1935	Widia CE 1935
V 30 - 2M ST6WK+F+R4+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Mechanical - Widia/Sic/FKM/AISI 316 - CE 1935	Widia CE 1935	Widia CE 1935
V 30 - 2M ST6WK+R4+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Mechanical - Widia/Sic/FKM/AISI 316 - CE 1935	Widia CE 1935	Widia CE 1935
V 30 - 2 SPG+R CHOCO	Hardened steel	Ductile cast iron	Ductile cast iron	Cast iron	Packing - PTFE CE 1935	Cast iron CE 1935	Case hardened steel CE 1935
V 50 - 3M SPK+R4+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Packing - PTFE CE 1935	Widia CE 1935	Widia CE 1935
V 50 - 3M ST6WK+R4+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Mechanical - Widia/Sic/FKM/AISI 316 - CE 1935	Widia CE 1935	Widia CE 1935
V 50 - 3 SPG+R3 CHOCO	Hardened steel	Ductile cast iron	Ductile cast iron	Ductile cast iron	Packing - PTFE CE 1935	Cast iron CE 1935	Case hardened steel CE 1935
V 60 - 2M SPK+R4+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Packing - PTFE CE 1935	Widia CE 1935	Widia CE 1935
V 60 - 2M ST6WK+R4+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Mechanical - Widia/Sic/FKM/AISI 316 - CE 1935	Widia CE 1935	Widia CE 1935
V 60 - 2 SPG+R3 CHOCO	Hardened steel	Ductile cast iron	Ductile cast iron	Ductile cast iron	Packing - PTFE CE 1935	Cast iron CE 1935	Case hardened steel CE 1935
V 80 - 2M ST6WK+R4+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Mechanical - Widia/Sic/FKM/AISI 316 - CE 1935	Widia CE 1935	Widia CE 1935
V 80 - 2M SPK+R4+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Packing - PTFE CE 1935	Widia CE 1935	Widia CE 1935
V 80 - 2 SPG+R3 CHOCO	Hardened steel	Ductile cast iron	Ductile cast iron	Ductile cast iron	Packing - PTFE CE 1935	Cast iron CE 1935	Case hardened steel CE 1935
V 100 - 2M ST6WK+R4+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Mechanical - Widia/Sic/FKM/AISI 316 - CE 1935	Widia CE 1935	Widia CE 1935
V 100 - 2M SPK+R4+W2+X	Kolsterized duplex	CF8M	Kolsterized CF8M	Kolsterized CF8M	Packing - PTFE CE 1935	Widia CE 1935	Widia CE 1935
V 100 - 2M ST6W	Hardened steel	Ductile cast iron	Ductile cast iron	Ductile cast iron	Mechanical - Widia/Sic/FKM/AISI 316 - CE 1935	Bronze CE 1935	Case hardened steel CE 1935
V 100 - 2 SPG+R3 CHOCO	Hardened steel	Ductile cast iron	Ductile cast iron	Ductile cast iron	Packing - PTFE CE 1935	Cast iron CE 1935	Case hardened steel CE 1935
V 120 - 2M ST4W	Hardened steel	Ductile cast iron	Ductile cast iron	Ductile cast iron	Mechanical - Widia/Sic/FKM/AISI 316 - CE 1935	Bronze CE 1935	Case hardened steel CE 1935

Industries

Metering of sensible fluids in the food and beverage industry with LEWA pumps and systems

Bombas y sistemas para la industria alimentaria y de bebidas

LEWA facilita bombas y sistemas para la homogeneización y dispersión a las empresas productoras y constructoras de plantas de la industria de alimentos y bebidas, así como para otras operaciones de procesamiento en la industria alimentaria. Trabajamos con usted para planificar todas las operaciones técnicas fundamentales de los procesos, como por ej. transporte, dosificación, mezcla, calefacción y refrigeración, para que pueda procesar su producto crudo con eficiencia de costes.

More Details