Liverani Major 2 Pump EP MIDEX – Flexible Impeller Transfer Pump
The Liverani Major 2 EP MIDEX is a flexible impeller pump built for the controlled transfer of food-grade liquids such as wine, juice, cider, and other beverages. Its design ensures gentle product handling, reducing turbulence and preserving natural quality and aroma.
The rotation of its flexible impeller blades creates a self-priming vacuum, drawing liquid smoothly into the pump head and pushing it out without aeration or product damage. The liquid itself lubricates the impeller, minimising wear and allowing consistent operation even with viscous fluids.
Available in single or three-phase electrical configurations, this model delivers up to 5,760 litres per hour, making it ideal for beverage producers and food processing operations. Optional versions include variable speed control, ATEX-rated motors, and portable trolleys for maximum flexibility in production environments.
Technical & Functional Details (Mechanical Design and Operation):
Inlet / Outlet Standard: DN60 (other fittings available on request)
Pump Head Material: Food-grade stainless steel
Mounting Options: Fixed installation or portable trolley
Optional Features:
ATEX-rated motor for hazardous or alcohol-rich environments
Variable speed version available upon request
Operating Pressure: Approx. 2.9 bar (maximum)
Temperature Range: Up to 60°C (standard configuration)
Country of Manufacture: Italy
Practical Benefits & Process Outcomes:
The Liverani EP MIDEX offers smooth and gentle liquid handling, making it suitable for sensitive beverages that can be damaged by harsh pumping. The flexible impeller design produces a strong self-priming effect, allowing liquids to be lifted from tanks or cellars below the pump level and transferred efficiently.
The fluid acts as a lubricant between the impeller blades and the casing, reducing internal friction and ensuring quieter, more energy-efficient operation. With its reversible motor, operators can both fill and empty tanks without reconfiguring hoses.
In production lines, this pump’s precision and durability contribute to consistent batch quality and reduced oxidation — crucial for maintaining the clarity and aroma of premium juices, ciders, and wines. Its IP55 protection ensures reliability in humid or wet processing areas, while the portable trolley option simplifies movement between workstations.
Overall, the EP MIDEX provides a reliable, hygienic, and easy-to-operate solution for beverage producers needing consistent flow, long service life, and minimal maintenance.
Why Choose This Product:
The Liverani EP MIDEX combines Italian engineering with food-industry reliability. It handles liquids gently and effectively, protecting the structure of sensitive beverages. Its self-priming capability, reversible operation, and efficient flow rate make it suitable for a wide range of production needs — from fermentation transfer to bottling preparation.
Its stainless-steel pump head and certified materials ensure full compliance with food processing standards. The natural rubber impeller and ceramic/graphite sealing system minimize wear, while optional ATEX upgrades offer additional safety in alcohol-handling environments. Whether stationary or mobile, the EP MIDEX delivers dependable performance in demanding applications.
Frequently Asked Questions
The Liverani EP MIDEX pump is specifically engineered for smooth and efficient transfer of liquids such as wine, juice, cider, and olive oil. Its flexible impeller design creates a self-priming suction effect that gently moves liquid through the pump without causing foaming, shearing, or oxidation. The natural rubber impeller provides a soft pumping action, making it perfect for delicate products that require careful handling to preserve flavour and quality.
The impeller’s rotation forms a vacuum that draws the liquid into the pump head, while the fluid itself acts as a lubricant — reducing friction and wear inside the housing. This ensures a long service life and consistent, reliable performance. Because of its hygienic design and versatile operation, it’s a popular choice among boutique wineries, olive processors, and small beverage producers who value both precision and product integrity.
This model combines strong build quality with user-friendly operation. It operates at 1400 rpm with a capacity of up to 5760 litres per hour, powered by a 0.75 kW motor that supports single or three-phase electrical supply. Standard inlet and outlet fittings are DN60, though other fittings can be provided upon request for custom installations.
The pump comes equipped with an on/off/forward/reverse switch (IP55-rated for protection), ceramic/graphite/NBR mechanical seal, and natural rubber impeller for smooth pumping action. It includes two DIN50 and two DIN32 connectors with sealing nuts and glands, and the connections are 1¼″ BSP male. The unit can also be supplied with a portable wheeled trolley for mobility or upgraded with an ATEX-rated motor for use in environments where flammable vapours may be present.
Together, these features make the EP MIDEX not only powerful but also flexible enough for various liquid transfer applications in food, wine, and oil production facilities.
To maintain performance and ensure long-term reliability, it’s important to operate the pump within the manufacturer’s specifications and follow regular cleaning procedures. Always prime the pump with liquid before starting — never run it dry, as the impeller relies on the pumped liquid for lubrication. After use, flush the system with clean water or a suitable cleaning solution to remove residues, especially when switching between different liquids.
Regularly check seals, impeller blades, and connectors for wear or damage. Replacing worn parts promptly prevents leaks and maintains vacuum efficiency. The mechanical seal should be inspected periodically, particularly when pumping viscous or abrasive liquids. For installations requiring frequent mobility, ensure the trolley and electrical connections are stable and secure.
With proper use and maintenance, the Liverani Major 2 EP MIDEX will provide years of smooth, trouble-free operation — offering a gentle yet highly efficient solution for transferring delicate liquids in commercial or artisanal production.
Frequently Asked Questions – Servicing the Liverani Major 2 Pump
The flexible impeller is the key moving part in Liverani pumps, including the Major 2 and Minor 40 models. Over time, impeller blades naturally wear down due to heat, friction, or chemical exposure.
Regular inspection every 50–100 operating hours (or at least once per season) is recommended. Look for signs of:
Cracks or missing blades
Stiff or swollen rubber
Uneven wear or deformation
If any of these are visible, replace the impeller immediately to maintain suction efficiency and prevent motor strain. Always use the correct impeller type — natural rubber for oils and EPDM for water or alcohol-based liquids — as specified in your model’s manual.
A light coating of food-grade lubricant on the blades before reassembly helps reduce friction during the first few rotations.
Loss of suction after reassembly is a common issue and usually relates to air ingress or dry impeller startup. Check the following:
Ensure all hose clamps and fittings are fully sealed — even a small air leak can prevent priming.
Confirm the impeller is correctly oriented (blades angled in the direction of rotation).
Fill the pump head with liquid before starting — never run the pump dry, as the impeller relies on fluid for lubrication.
Check that the mechanical seal is seated correctly and not allowing air to enter through the shaft.
If the pump still won’t prime, try backfilling through the outlet or raising the inlet hose slightly above the fluid source. Regular seal inspection and keeping hoses in good condition will prevent most priming issues and ensure consistent suction.
Servicing the Liverani Major 2 or Minor 40 pump head involves a few careful steps that can be completed using basic hand tools:
Disconnect power and drain the pump. Ensure all fluid is emptied to avoid leaks.
Remove the pump cover plate. Use a flat screwdriver or wrench to release the bolts.
Extract the impeller. Use an impeller puller or gently work it out by hand — avoid using metal tools that can damage the housing.
Inspect and clean the housing. Check for debris, scale, or scratches. Clean with warm soapy water and rinse thoroughly.
Check the mechanical seal and O-rings. Replace if worn, cracked, or flattened.
Lubricate and reinstall. Apply a thin layer of silicone or glycerine-based lubricant to the impeller and seals before reassembly.
Once reassembled, rotate the impeller manually to confirm smooth operation before reconnecting power or hoses. This process is nearly identical for both the Minor 40 and Major 2 models, as they share similar impeller housing and seal designs.
Key Features:
Self-priming flexible impeller for gentle liquid transfer
Flow rate up to 5,760 litres per hour
Stainless-steel pump head for food-grade hygiene
0.75 kW motor with bypass and forward/reverse function
IP55 control switch for secure operation
Natural rubber impeller for smooth flow
Ceramic/graphite/NBR mechanical seal for long service life
Optional ATEX-rated motor for alcohol-based products
The Liverani Major 2 EP MIDEX is a flexible impeller pump built for the controlled transfer of food-grade liquids such as wine, juice, cider, and other beverages. Its design ensures gentle product handling, reducing turbulence and preserving natural quali
