Self-Priming Centrifugal Pumps J Series

Varisco J Series - solids handling pumps are designed for efficiency and reliability across various demanding applications. 

The J self-priming centrifugal pumps are specifically designed for applications requiring fast priming from challenging suction heights while effectively handling polluted, waste, and abrasive fluids with suspended solids. These pumps are particularly useful in industries where solids handling pumps are required, including open impeller pumps, which are engineered for heavy-duty, high-head pumping.

The system features an inspectable pump casing, which also serves as a built-in water tank, enabling early and quick priming without the need for auxiliary systems. This design simplifies system management while significantly reducing maintenance times and operational complexities.

Whether you need a self-priming water pump for industrial applications, Varisco pumps range of high-quality solutions guarantees durability, efficiency, and ease of maintenance, tailored to your specific needs.

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Technical data

FLOW

Up to 1200 m3/h

Head

Up to 110 m

Solid handling

Up to 76 mm

Connections

Up to 300 mm

Self-priming capacity without auxiliary systems

Up to 7,5 m

Standard construction materials

Cast iron, hardened cast iron, stainless steel

Advantages

  1. Top and dry installation to ensure easy control, maintenance and management
  2. Suitable for handling challenging fluids and heavy-duty pump applications with suspended solids
  3. Easily replaceable parts subject to wear to restore original performance
  4. Management of fluids with viscosity up to 50mm2/s (cSt) with standard sizing. Option of special sizing for dense and waste mixtures and slurries
Brochure Varisco J and ST-R Series EN

Brochure Varisco J and ST-R Series EN

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Filename
Brochure Varisco J e ST-R - Rev.2021- EN.pdf
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4 MB
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pdf
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Manual JS-JP-JE-JO_Rev-10-2025_IT-EN-FR-DE-ES-CS_PT_SE_SK_PL_558 1

Manual JS-JP-JE-JO_Rev-10-2025_IT-EN-FR-DE-ES-CS_PT_SE_SK_PL_558 1

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Filename
Manuale_JS-JP-JE-JO_Rev_10-2025_IT-EN-FR-DE-ES-CS_PT_SE_SK_PL_558 1.pdf
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13 MB
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pdf
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Can't find the documentation you're looking for?

If you're looking for technical data sheets and performance curves, please visit our dedicated download area.

If you need documentation related to spare parts or would like assistance from our expert, please contact your local Varisco referent or send a request to [email protected]. Attach a photo of the pump nameplate (see example) to your request to help us identify the model you already have and respond more quickly.

Manual J OT-STR_ATEX_Rev-06_06-25_IT-EN-FR-DE-ES-NL-SV.Cod506

Manual J OT-STR_ATEX_Rev-06_06-25_IT-EN-FR-DE-ES-NL-SV.Cod506

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Filename
Manuale_J_OT-STR_ATEX_Rev06_06-25_IT-EN-FR-DE-ES-NL-SV.Cod506.pdf
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1 MB
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pdf
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Service Video Tutorial - J Series

Varisco Pump JS - Dismantling
Varisco Pump JS - Assembly
Varisco Pump JE_NT - Dismantling and Assembly
Varisco Pump JE_MT - Dismantling and Assembly
Varisco Pump JE_FT - Dismantling and Assembly
Varisco Pump JE_ET - Dismantling and Assembly

Accessories

PSDrive® - Electric pump on-board inverter

Varisco PSDrive can be installed directly on the motor in place of the Varisco pumps terminal board cover. It ensures:

  • Energy saving due to motor rotation speed control
  • Extended operating life of the pump and protection against overloads
  • Easy and fast commissioning thanks to initial configuration wizard
  • High thermal and mechanical performance thanks to fully aluminium container and independent ventilation


Thanks to the Varisco PSDrive App, it’s possible to communicate with all PSDrive Bluetooth® SMART devices.

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Varisco pump JE NT Plus PSDrive with inverter
Varisco J Pumps ATEX Certification

Varisco J Pumps ATEX Certification

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Filename
Varisco Certificate J, OT, ST pumps - 0206312.pdf
Size
227 KB
Format
pdf
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Pump Configurations

Varisco offers the J Series self-priming pumps in various sizes and metallurgical configurations. Available as bare shaft pumps or as complete units with an electric motor, the J Series is one of the largest ranges worldwide. Designed for versatility, it adapts to diverse water management applications, including those involving suspended solids.

JS

Bare shaft pump

This pump type features a compact, bare shaft design, making it adaptable to different motor and drive configurations for various industrial applications.

Centrifugal Pump

JE…NT

Close-coupled N pump with electric motor

Close-coupled self-priming pump with standardized IEC B34-B35 motor (IE3 WEG- for inverter). With a direct connection between the pump and motor, it minimizes space requirements while ensuring smooth operation.

solid handling pump

JE…FT

Close-coupled F pump with electric motor

A close-coupled self-priming pump with a standardized IEC motor (primary brand). With a direct connection between the pump and motor, it minimizes space requirements while ensuring smooth and consistent operation.

self priming centrifugal pump

JX

Close-coupled or bare shaf ATEX pump

A self-priming pump ATEX version is specifically designed for use in explosive atmospheres, complying with the ATEX directive (2014/34/EU) with a standardized IEC B34-B35 motor (CEMP).

Centrifugal Pumps ATEX

JE…BASE

Base and joint pump

A base and joint self-priming centrifugal pump is a robust and efficient pumping solution mounted on a sturdy base frame with flexible coupling to IEC B3 motors

self priming centrifugal pump base and joint

JO MOD

Pump with hydraulic motor

A self priming pump with hydraulic motor converts hydraulic energy (fluid pressure and flow) into mechanical energy (rotational motion). Pressurized hydraulic fluid is delivered from the pump through inlet ports into the motor.

hydraulic pump

JP MOD

Pump for hydraulic motor

This pump model can be easily integrated into hydraulic systems with minimal space requirements and it is suitable for skid-mounted, trailer-mounted, or stationary installations.

Centrifugal Pump for hydraulic motor

J Series

The operating principle of self-priming pump

The operating principle of a self-priming pump relies on its ability to evacuate air from the suction line and create a vacuum, allowing liquid to be drawn into the pump casing without the need for external priming.

The air is drawn into the pump by the vacuum created by the moving open impeller, and it emulsifies with the liquid in the pump casing. The air-liquid emulsion is forced into the priming chamber where the lighter air separates and comes out from the delivery pipe; the heavier liquid falls back and recirculates.

Once all the air is expelled from the suction duct, the pump is activated and runs just like a regular centrifugal pump. The pump can also run with an air- liquid mixture.

The non-return valve has a dual function: it prevents the suction pipe from emptying when the pump is not running; if the suction pipe is accidentally emptied, it keeps sufficient liquid in the pump casing for priming. The delivery pipe must be free to release the air deriving from the suction.

Self priming bare shaft pump
industrial production plant

Applications

To ensure correct pump operation, it is crucial to pick the right product with respect to the application and the chemical-physical characteristics of the fluid being treated.

Pump for wine industry
Wine Industry

Washdown, Canning industry

Industrial pumps
General Industries

Industries manufacturing painting machinery, Feed industry, Industries for the processing, Automotive industries, Steel plants, Tanneries, Paper factories, Mechanical processing industries, Protection of sites subject to floods, Oil mills

Pumps for recycling
P. E. T. Washdown and Recycling

Varisco pumps with electric motor can be used within the PET recycling cycle for handling the washing fluids of plastic waste to be recycled

Sewage pumps
Sewage plants

For water treatment Varisco pumps are the ideal solution thanks to the design of materials resistant to the chemical aggression of substances contained and the option of pumping fluids with suspended solids.

pumps for original equipment manufacturers
Original equipment manufacturers

Varisco supplies pumps to original equipment manufacturers operating in various vehicle and machinery sectors for integration into metering, dispensing and transfer systems.

Pumps for marine
Naval and shipboard platforms

Varisco pumps can be used in naval units and in ports for loading/unloading services of different types of fluid, for general services on board the ship and ballasting. 

Pumps for agricolture
Pet Food and Agricolture

Varisco pumps are used in ancillary applications for waters containing agricultural manure for the livestock, farming, dairy and agricultural sectors.

Continue reading

2024-08-31

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Varisco pumps for paper industry

Cartiera del Borgo in collaboration with Varisco, has optimized its separation systems by installing self-priming centrifugal Varisco J pumps at the Fabbriche di Vergemoli production paper plant.
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2023-11-30

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Varisco pumps in PET recycling plants

Varisco pumps can be used within the PET (polyethylene terephthalate) recycling cycle for handling the washing fluids of plastic waste to be recycled and others.
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escalator with a pile of plastic bottles at the factory for processing and recycling. PET recycling plant

2022-08-31

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Varisco sewage pumps

The ST-R self-priming centrifugal pumps are designed to facilitate unclogging operations and ensure easy maintenance in the field and high levels of reliability.
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Varisco Sewage Pumps