Varisco

Varisco

Varisco S.p.A. has a long experience and competence in the design and production of pumps and pumping systems whether they be standard or engineered in the following fields of application: industry, process, construction, marine, civil defence and fire fighting.

Varisco is synonymous with reliable pumps with references all over the world.

 

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Products

Varisco Lithium

The high head pumps have excellent NPSH values. This means that they can be installed conveniently and the pumps are capable of delivering high pressures. LITHIUM is a special version of the H series pumps. This kind of pumps is characterized by solid handling up to 3”, head up to 100 m (10 bar) and capacity up to 310 m3/h, therefore it’s suitable for pumping liquids with solids in suspension at great distances. The high reliability and robustness make the LITHIUM ideal for heavy- duty application like the use in the mine.

Operating range:

  • Capacity up to 310 m3/h.
  • Solids handling up to 76 mm.
  • Head up to 100 m.

Features:

  • Pump with high efficiency closed impeller.
  • High resistance to water  containing sand, mud with solids in suspension.
  • Casing and impeller in cast iron
  • Mechanical seal in silicon carbide-nitrile rubber, grease lubricated

Main applications:

  • Cleaning and flushing of pipe systems
  • Jetting in and extraction of piles and sheet piles
  • Pipeline filling and pressure testing
  • Pressure drilling
  • Jetting well pointing filters
  • Water injection dredging
  • Tank cleaning

Can be used as:

  • Booster pump
  • Emergency, firefighting pump
  • Coolong water pump

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Varisco J

Varisco J series are powerful self priming centrifugal pumps. Due to open type impeller these pumps are perfectly suitable for pumping of liquids that conatin large size solids, as well as for working in extreme conditions.

Operating range:

  • Capacity from 22 m3/h to 1400 m3/h
  • Suction height up to 7,5 m
  • Solids handling up to 76 mm

Features:

  • Rapid self-priming: without foot valve
  • Simple construction and easy inspection
  • High resistance to abrasive liquids
  • Axial mechanical seal lubricated from the outside.
  • Easy to install
  • Long life: parts subject to wear can be easily replaced  



Main applications:

  • Industry: Transfer: clean, dirty, containing sand in suspension, muddy, neutral, alkaline, acidic liquids; low viscous petroleum products, solvents even if dirty; milk of lime, caustic soda; washing, cooling, recirculation, smoke scrubbing
  • Treatment: Pumping polluted, hot or corrosive waste water containing sand, mud or solids in suspension; dosing neutralising liquids; pumping out settled sludge
  • Naval: loading and unloading; bilge pumping; washing, fire-fighting, stripping, sanitary duty and circulation
  • Agriculture: Surface irrigation; liquid manure oxygenation; transfer and spraying liquid manure or fertilisers; distribution of liquid animal feed; transfer of must; washing
  • Civil engeneering: Drainage of excavations, canals or ponds, ground water dewatering with drains, water supply from wells or canals, washing concrete castings and aggregate, recirculation of bentonite and drilling mud
  • Safety: drainage after flooding or terrential rains, emergency duty: temporary sewagepumping; fire fighting; recovery of dangerous liquids
 
Self-priming principle
The air is drawn into the pump due to the negative pressure reated by the moving impeller and is emulsified with the liquid contained in the pump body. The air-liquid emulsion is forced into the priming chamber where the lighter air is separated and leaves through the discharge pipe; the heavier liquid drops back down into circulation.
Once all of the air has been expelled from the suction pipe, the pump is primed and works like a normal centrifugal pump. The pump can also work with an air-liquid mixture. The non-return valve has a dual function: it prevents the suction pipe from emptying when the pump is off; in the event of accidental emptying of the suction pipe, this holds a sufficient amount of liquid in the pump body to prime the pump. The discharge pipe must be free to expel the air coming from the suction pipe.
Heavy duty casing in cast iron, bronze or stainless steel. Easily opened priming, drain and impeller inspection covers.

Ductile iron, aluminium bronze or stainless steel open impeller handling large diameter spherical solids.

Externally lubricated mechanical seal. Can run dry on high vacuum even when
pumping highly abrasive liquids. Silicon or tungsten carbide seats (graphite rotating seat for versions for petroleum products). On request, double or cartridge seals.

Bearing housing with heavy duty bearings suitable for direct or V-belt drive. Standard diameter shaft extension bored and tapped to facilitate the assembly of couplings or pulleys.

 

DRIVE

JS | Bare shaft JP | Pre-assambeled for close-coupling JE | Electric motor JX | Electric motor
 JB | Gasoline engine  JD | Diesel engine JO | Hydraulic engine  JT | Water turbine

 

ARRANGEMENTS

LIGHT | Handle LIFT | Carrying frame BASE | Base plate TROLLET | Trolley
TRAILER | Site trailer TANK | Base plate BLOCK | Plate for road trailer ROAD | Road trailer

 

SPECIAL ARRANGEMENTS

RANGER | Site trailer BULL | Tubolar protection RALLY | Tubolar protection STACK | Stackable, oversized tank

 

SILENT

SILENT | Silenced engine MELODY | Silenced canopy MUTELINE | Silenced canopy MUTELINE | Silenced canopy

 

VACUUM-ASSISTED

ECOMATIC | SIMPLE | DUO |
     
See models >> Download Varisco J brochure Send request

Varisco Simple

SIMPLE vacuum assisted self-priming centrifugal pump units are highly dependable pumps suitable for wellpoint systems or sump pumping on site. At the heart of every SIMPLE unit there is a heavy-duty J series self-priming centrifugal pump handling liquids containing solids in suspension. A separator, closely joined to the liquid pump casing, forms a chamber where air or entrained gases can separate from the liquid and is drawn into a vacuum pump. The vacuum pump makes it possible for the unit to prime “dry” (without first having to fill the pump casing with liquid) and can handle considerable quantities of air, allowing the priming of the wellpoint system and maintaining it under vacuum, or draining an excavation thoroughly under “snore” conditions.

Operating range:

  • Capacity from 80 m3/h to 1400 m3/h
  • Head from 21 m to 45 m
  • Solids handling up to 76 mm

Features:                                                                  

  • Automatic dry priming with vacuum pump
  • High continuous air capacity
  • Secured operation in case of a fault with the vacuum pump
  • Suitable for sump pumping and for wellpoint systems
  • Robust construction
  • Oil lubricated vacuum pump with oil recovery system

Main applications:

  • Wellpoint dewatering systems
  • Horizontal drainage with drainage hoses
  • Construction site dewatering
  • Sewage by-pass
  • Quarries
  • Sludge and slurry
Cast iron separator.
  • Liquid entry in line with the impeller to reduce friction losses.
  • Vacuum pump oil reservoir incorporated in the separator to cool the oil.
  • Bronze air valve seats and brass suction and discharge check valve seats to resist salt water.

Oil lubricated vane type vacuum pump with built-in cooling fan.

The vacuum pump makes it possible for the unit to prime “dry” (without first having to fill the pump casing with liquid) and can handle considerable quantities of air, allowing the priming of the wellpoint system and maintaining it under vacuum, or draining an excavation thoroughly under “snore” conditions.

Diesel driven units
  • Vacuum pump driven by the rear PTO of the diesel engine through V-belt and belt tightener.
  • Arrangement on heavy duty two wheeled site trailer with fuel tank for 24 hours of operation.
  • On request: silenced versions, tubular protection frame, skid base, fast tow trailers.

 

Electricaly driven units

  • The vacuum pump has a separate electric motor.
  • Electrical components mounted in a waterproof IP65 cabinet.
  • Arrangement on two wheeled site trailer.
  • On request: roadworthy trailers, 60Hz versions.
See models >> Download Varisco Simple brochure Send Request

 

Varisco Duo

The patented “Duo” system enables two pumps, one for water and the other for air, to work together in harmony, separating the elements at the suction port of the unit so that they can follow different paths. Furthermore it can easily handle solids in suspension in the pumped liquid. Duo vacuum assisted pumps open up a new era in the relationship between the workplace and the environment, reducing the environmental impact of civil engineering and construction sites while offering considerable savings in operating costs

Operating range:

  • Capacity from 160 m3/h to 360 m3/h
  • Head from 18 m to 32 m
  • Solids handling up to 75 mm

Features:

  • Lower cost of operation. There are no levels to control or top up, or condensate to drain daily. The vacuum pump does not consume oil
  • Higher performance. For a given nominal rating of the vacuum pump, the patented Duo system permits faster priming and a constant flow of water from wellpoint systems
  • Optimum operation. Self-priming centrifugal pump which secures operation in case of a fault with the vacuum pump. Large diameter solids handled, making the units suitable both for sump pumping and for wellpoint systems
  • Ease of maintenance. In diesel driven versions, the engine is within easy reach for changing the oil, air and fuel filters, and for maintenance on the starter motor and alternator


 

Main applications:

  • Wellpoint dewatering systems
  • Horizontal drainage with drainage hoses
  • Construction site dewatering
  • Sewage by-pass
  • Quarries
  • Sludge and slurry
Patented air/water separation system which does not draw air from the surrounding environment.
  • Reduction of the noise level produced by air entering from outside.
  • Particles in suspension in the air are not drawn into the vacuum pump, avoiding damage to the blades, bearings, casing and cover.
  • The vacuum pump is always ready to operate at its maximum level whenever there is air in the suction line.
  • Robust construction: cast iron separator and stainless steel float mechanism.
  • Vibrations and strains on the unit and its motor or engine are reduced to a minimum.
  • There is no need for suction filter in the vacuum pump, further reducing the maintenance operations
  • Separation system leaves the impeller inspection cover free
    When pumping liquids with solids in suspension, it is possible to inspect and, if necessary, unclog the impeller without removing the hoses or the separator.
Float mechanism without adjustment
  • No need for periodic checks
  • During maintanence, there are no adjustments to carry out.
Rotary claw vacuum pump without lubrication
  • No contact between the moowing parts: long operation life for the vacuum pump on site
  • Unit does not emit oil in to the air
  • No risk of loss of oil from the vacuum pump or its lubrication circuit.
  • No need to check the levels of oil and/or condensate daily

Diesel driven units:

  • Fuel tank with capacity for more than 24 hours of operation
  • Hand pump for draining the engine oil sump mounted as standard equipment

Electricaly driven units:

  • Control panel automatic start/ delta starter as standart equipment
  • Starting current and mechanical strains are reduced
  • Avoids overloading generating sets on site when pumps are started
  • Does not require intervention by specialised personnell.
  • Includes provision for automatic start/ stop with float switches
See models>> Download Varisco Duo brochure Send Request

Varisco Ecomatic

Varisco Ecomatic is basically a pump driven by a diesel engine, with a vacuum pump unit, featuring an open vane impeller to allow it to handle even liquids containing solids.

Operating range:

  • Capacity from 150 m3/h to 360 m3/h
  • Head from 18 mm to 32 m
  • Solids handling up to 76 mm

Features: 

  • Robust, compact design
  • Mobile
  • capable of pumping viscous liquids containing solids
  • Oil vacuum pump
  • High suction lifts
 
 
 

Main applications:

  • Wellpoint dewatering systems
  • Horizontal drainage with drainage hoses
  • Construction site dewatering
  • Sewage by-pass
  • Quarries
  • Sludge and slurry
 
See models >> Send Request

Varisco V

V series positive displacement internal gear pumps are suitable for pumping liquids of any viscosity. Solids cannot be handled, but the pumps can cope with abrasive liquids.

Operating range:

  • Viscosity from 20 to 100.000 (mm2/s - cSt)
  • Capacity from 3,8 m3/h to 350 m3/h
  • Pressure handling from 8 bar to 20 bar

Features:

  • Constant capacity, directly proportional to the rotation speed and virtualy independent of the pressure.
  • Smooth flow, without pulsations or pressure peaks whitch could cause vibrations in the pipework.
  • Verstality. By adjusting the axial position of the rotor, the same pump can handle water-thin liquids or high viscosity liquids such as bitumen, molasses, resins, polymers, etc.
  • Reversibility. By inverting the direction of rotation the flow of liquid is reversed. Full performance is available in eather direction of flow.
  • Self-priming. The high vacuum created by the pump permits rapid self-priming at the maximum height made possible by the physical charecteristics of the pumped liquid.
  • Simplicity. Only two moving parts: the rotor and idler gears, and only one shaft seal.
  • Rugged, heavy duty construction. Low rotor and peripherial speed. External pedestal bearing housing with oversize ball bearing to take axial and radial loads.

 

 

Main applications:

  • Petroleum products: gasoline, diesel fuel, fuel oil, lubricating oil, additives, crude oil
  • Soap and detergents: surfactants, liquid detergents
  • Adhesives: glue, epoxy resins
  • Paint and ink: varnish, printing ink
  • High temperature liquids: bitumen, tar, asphalt, heat transfer liquids.
  • Foodstuffs: molasses, chocolate, cocoa butter, glucose, animal feed, vegetable oils, fat.

Special versions:

Magnetic drive pump. The liquid is complitely contained in the pump to avoid leaks and consequent pollution of the environment.

  • For the availability of materials, treatments and accessories for specific applications, please contact our Sales Office.
  • The pumps can be certified in accordance with the ATEX standards.
  • V series pumps are suitable for use in the petrochemical industry and can be supplied in accordance with API 676 standards (detailed exception list available on request).

 

 

Working principle:

V pumps are internal gear positive displacement rotary pumps. The flow is generated by two gears: the rotor and idler, one inside the other, separed 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 are a smooth flow of liquid and high capacity combined with compact size.

  • Heavy duty casing in ductile iron, steel or stainless steel with flanged ports.
  • Casing with optional integral heating jacket available for ductile iron versions
  • Rotor and idler gears in ductile iron or stainless steel.
  • Anti-galling surface treatment for versions for solvents.
  • Bushes in cast iron, bronze, graphite or tungsten carbide.
  • By-pass relief valve (+Y) mounted on the pump available on request
    (advisable).
  • Heated (+YR) or double (+YY) by-pass relief valves available for some
    models.
 
  • Shaft and idler pin in hardened steel or stainless steel.
  • Large bearings absorb axial and radial thrust. Lock rings for precise rotor positioning even when the pump is installed.

 Arrangements:

 
See models >> Download Varisco V brochure Send Request
Download Varisco SAXMAG brochure

Varisco ST-R

Varisco ST-R series self-priming trash pumps are suitable for handling liquids with large solids in suspension. They are mounted above and out of the liquid to be pumped, enabling inspection and maintenance of the pump, drive and motor with greatly reducing health and safely hazards for maintenance personnel. The special design of the volute enables the pumps to prime and reprime automatically even without check valves. If the impeller should be clogged by rags or stringy materials, the large front cover can easily be removed to provide full access for inspection and maintenance. 

Operating range:

  • Capacity from 48 m3/h to 600 m3/h
  • Head up to 27 m
  • Solids handling up to 76 mm

Features:

  • Rapid self-priming without foot valve
  • Two vane, semi-open impeller
  • Front and rear wear plates with oil resistant rubber for impeller wear protection
  • The front wear plate can easily be adjusted from the outside to compensate for wear
  • Self-aligning oil lubricated mechanical seal with tungsten carbide faces and Viton elastometers
  • Full access to the impeller and mechanical seal
  • Dual protection of bearings trough double oil bath, with intermediate discharge to atmosphere

Main applications:

  • Sewage lift stations
  • Sewage treatment
  • Industrial wastewater treatment
  • Pumping liquids with high concentrations of solids in suspension
  • Sewer by-pass

Technical advantages

Replacable front and rear wear plates with abrasion and oil resistant rubber facing. The rubber facing protects the impeller vanes against wear due to small abrasive particles, reducing the need of adjustment to take up wear. This ensures as new performance and priming capabilities well into the service life of the parts. Cast iron or stainless steal wear plates are aviable as an altenative when pumping liquids containing sharp solids or aontaminated with petroleum products or chemicals Self aligning mechanical seal with tungsten carbide faces and Viton elastometers. Oil lubrication with double lip seal and cavity to isolate the seal oilfrom the bearing oil and permit monitoring of leaks from the seal from the outside.
Balanced ductile iron or stainless steel two vane inpeller hadling solids up to 3"(75mm) in diameter. Pump out vanes on rear to reduce the build up of foreign matter and reduce the pressure on the mechanical seal. Impeller inspection cover with large handle, brass wrenches and pusher bolts for easy removal.
Canvas reinforced nitrile rubber on Vitron suction check valve witch can easily be replaced trough the front cover without removing the pipework Robust cast iron casing complite with an easily removed priming cover and lower drain plug. Pressure relief valve mounted on the front cover vent the casing before opening the cover.
Back pullout rotating assambly which can be remowed without dismantlig the pipes or pump casing. Pusher bolts are facilitate dismantling. Provisinon for scasing heater and external sela leekage monitor. Seperate oil filling plugs for bearings and mechanical seal with sigt gauges.
See models >> Download Varisco STR brochure Send request

Varisco EP

EVO PUMPS has a wide range of emergency pumps for use in most difficult conditions. Since in emergency and salvage situations every minute is very important, these pumps are made from especially light but resistant materials for easy handling and quick installation. 

Operating range:

  • Capacity from 50 m3/h to 1400 m3/h
  • Head from 17 m to 39 m
  • Solids handling from 25 mm to 76 mm

Features:

  • Self-priming pumps for emergency and for most severe transfer duties, 
  • Turbo-pumps for emergency transfer of dangerous liquids 
  • Submersible pumps for drainage. 
  • Mobile units on roadworthy trailer for Fire Brigades and Civil Defence 

Our offered emergency pumps, with their long life, reduced dimensions and weight, reliability of operation and minimum maintenance, is a ideal partner in all emergency situations.

Main applications:

  • Drainage of basements and flooded areas
  • Water supply for fire trucks
  • Transfer of floodwater
  • Transfer of hazardous liquids

Varisco ETP Features:
  • High versatility- suitable for pumping liquids with high quantities of solids, sea water or sewage.
  • Quick and sure priming down to 7.5 m.
  • High performance - best capacity and head in its field.
  • Ease of maintenance 
  • Very low weight
  • High resistance to shocks and corrosion
  • Casing with replaceable ports
Varisco TP Features:
  • Internal gear rotary pump suitable for handling hazardous liquids including corrosive, volatile and inflammable liquids and liquefied gases.
  • The capacity is directly proportional to the pump speed, and liquids are handled smoothly without pulsations and pressure peaks.
  • Available in ductile iron or stainless steel
  • Supplied complete with carrying frame.
Varisco J Features:
  • Rapid self-priming down to 7.5 m
  • Simple construction
  • Passage of large solids
  • High resistance to abrasive liquids.
  • Axial mechanical seal externally lubricated
  • Easy to install
  • Long life

 
See models>> Download Varisco EP brochure Send Request

Varisco Z

Varisco Z open impeller centrifugal pumps have High resistance to water containing sand, mud with solids in suspension.

Operating range:

  • Capacity from 230 m3/h to 470 m3/h
  • Head up to 31 m
  • Solids handling up to 76 mm

Features:

  • Casing in cast iron and impeller in ductile iron
  • Mechanical seal in silicon carbide-nitrile rubber, grease lubricated (oil lubrication on request)
  • Rubber lined cast iron front and rear wear plates

 

Main advantages of open impeller centrifugal pumps:

  • Large solids handling capability;
  • Inspection cover for easy access to the impeller;
  • Higher efficiency - more capacity with the same or less power than standard centrifugal pumps.
 
Send Request