The liquid ring self-priming and reversible pumps Liverani are available both made of stainless steel AISI 316 and bronze.

According to the construction material the pumps find good applications in several fields: Oenological field and food processing (wine, must, vinegard, oil, fruit juice, bier, sirups and pickle), dairy field (milk, whey, etc.), chemical field (acids, solvents, photographic liquids, cleaning products, ink, etc.), agriculture field (anticryptogamics, liquid fertilizers, gas oil, etc.), nautic field (sea water, sweet water, gas oil, etc.).

APPLICATION FIELDS

• oenological field and food processing (wine, must, vinegard, oil, fruit juice, bier, sirups and pickle)
• dairy field (milk, whey, etc.)
• chemical field (acids, solvents, photographic liquids, cleaning products, ink, etc.)
• agriculture field (anticryptogamics, liquid fertilizers, gas oil, etc.)
• nautic field (sea water, sweet water, gas oil, etc.).

OPERATING FEATURES

The star impeller, grazing the pump head and the front cover, creates a suction pressure which allows the transferring of the liquid which goes, by the load port, from the inlet chamber to the discharge port and then to the outlet chamber.

• Selfpriming, also with gas presence and in case of discontinuos flow of liquid
• Reversible
• Transferring without pulsation effect
• Dry operating

ACCESSORIES

• Trolley and handle for electric pumps
• By-pass valve
• Terminal board connection
• On-off/reverse switch

AVAILABLE MODELS (Please check the Technical catalogue out for details)

• SPECIAL – Pumps with pulley
• SPECIAL FM – Pumps with magnetic clutch
• EPH/EP – Bronze electric pumps
• EP – Stainless steel AISI 316 electric pumps
• MID – Pumps for hydraulic motor
• LALX – Pumps with overdrive
• NAUTIC – Pumps with pulley
• NAUTIC F – Pumps with hand clutch
• GR ADPE – Explosion proof groups without control panel
• FALCO – Pumps with internal combustion engine

About the manufacturer

Born during the ‘50s, Liverani manufactures and exports its pumps and presses all over the world. All its products are produced according to CE standards and the high quality of raw materials and technology allow excellent performances together with a simple use and maintainance of the pumps. The wide range of products, the materials and the numerous pump versions allow a very wide range of applications.

L'articolo Liquid ring self-priming and reversible pumps proviene da FORTEK.

The stainless steel low-speed rotary pumps with flexible impeller Liverani are widely used in the following sectors:

• OENOLOGICAL field (wine, must, must and stemmed grapes)
• FOOD processing (beer, fruit pulp and juice, honey, liquid sugar, syrups, glucose, milk, melted butter, yoghurt, liquid eggs, oil, tomatoes pulp and juice , brine, etc.)
• CHEMICAL INDUSTRY (starch, water based glues, emulsions, glycerine, wax, detergents, rubber latex, photographic processing liquids, polyelectrolyte, paints, ink, industrial discharges, etc.)
• COSMETIC and PHARMACEUTICAL production (liquid soap, cleaning lotion, cream, shampoo, etc.).

The easy mounting principle, the multiple choice of production materials and the Quality System procedure applied throughout production, allow us to offer a wide, versatile and customized product range. Every pump range can be produced with different impeller types, mechanical gasket, couplings and in numerous executions, which are: bare shaft pump; coaxial motorized pump (with electric or orbital hydraulic motor); with gearmotor; with pulley (on trolley or base); with mechanical speed variator or with frequency converter.

USES

• Transfer
• Filling
• Emptying
• Recycling and mixing
• Filtering and separation
• Metering

OPERATING FEATURES AND BENEFITS

Pump principle – The flexible impeller vanes deform slightly to pump the liquid inside the pump and move it to the discharge port at a stedy flow rate. This principle combines gentle pumping with a high self-priming action.

• Self-priming (automatic priming of the product up to 6 m even from dry start-up).
• Reversible operation (the pump can operate in both rotation directions, which permits return of excess liquid without any manual intervention, and also allows easy emptyng of pipes on completion of liquid transfer).
• Excellent priming action even at a low revolutions, which allows the transfer of soft and fragile fluids with viscosities up to 50.000 cp, or with solid particles in suspension, without causing air-locking, avoiding emulsifying or damaging particles.
• Smooth steady pumping action of the product without pressure spikes (even flow rate ideal for filling, dosing or filtration).
• The pump can work in all mounting positions.

TECHNICAL SPECIFICATIONS

• Flows: 0 up 72.000 litres/hour
• Viscosities: up to 50.000 cp
• Temperature of fluids: up to 100 °C
• Maximum differential pressure: 4 bar
• Couplings (DIN 11851, Garolla, BSP, Macon, Triclover, SMS, BSM/RJT).
• Pump body: stainless steel AISI 304/316
• Reversible mechanical seal (Stainless steel-Graphite-NBR, Tungsten carbide-NBR, Tungsten carbide-Viton, ecc.).

IMPELLER FEATURES

• Natural rubber (NR) – Excellent for water based liquid at room temperature, highest mechanical resistance.
• Neoprene (CR) – Good balance between chemical and mechanical resistance.
• Nitrile (NBR) – Excellent resistance to oils and fats.
• EPDM – Best for hot fluid and CIP cleaning. Excellent for acid and alkaline fluids.
• Silicon (VMQ) – Best for high temperature but low mechanical resistance.

AVAILABLE MODELS (For details please check the Technical catalogue out)

• SP – Bare shaft pumps
• MID – Hydraulic orbital motor pumps
• EP – Coaxial pumps
• GR – Belt driven pumps on base or trolley
• RID – Pumps with gearmotor
• VA – INV – Pumps with mechanical speed variator or frequency converter
• INV BS – Monoblock pumps with frequency converter and controls on main panel
• MINIVERTER – Monoblock pumps with integrated frequency converter

About the manufacturer

Born during the ‘50s, Liverani manufactures and exports its pumps and presses all over the world. All its products are produced according to CE standards and the high quality of raw materials and technology allow excellent performances together with a simple use and maintainance of the pumps. The wide range of products, the materials and the numerous pump versions allow a very wide range of applications.

L'articolo Stainless steel self-priming pumps with flexible impeller proviene da FORTEK.