Bertoli Srl Homogenizers and

High pressure volumetric piston pump

since 1974

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Bertoli is the leader in the Italian market of

High Pressure Homogenizers and Pumps with

55% market share during the last five years.

Bertoli Srl

• 1974 establishment of Bertoli as manufacturer

of homogenizers and high pressure pumps

• 1978 PX pumps for products containing pieces

• 1993 High capacity homogenizer: 35.000 l/h

in aseptic execution

• 1996 Self-centering pistons alignment patented

system

• 1999 ISO 9001 Quality Certification

• 2007 New headquarters

• 2008 ISO 14001 Certification

• 2009 New High Efficiency Homogenizing

Valve – “Margherita”

• 2009 New Establishment: “Bertoli Tools”

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Bertoli Milestones

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Bertoli workshop is enriched by

a new sector dedicated to the

machining of all the strategic

parts of its machines.

This will guarantee the total

control of the quality

of our main components.

New establishment in 2009:

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Bertoli workshop is equipped with the

most modern and powerful tooling

machines presently available.

New establishment in 2009:

„To improve without upset, to

optimize the service, to ensure

prompt and functional solutions“

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Bertoli mission:

Bertoli: a quality certified company

• The quality of Bertoli designing,

manufacturing, installing and servicing

activities is certified according to

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• ISO 9001 Quality Certification

• ISO 14001 Certification

• GOST Certification (Russia)

• 3 A Certification (USA)

• OHSAS 18001 Certification

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Bertoli Sales Network

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Bertoli Sales by fields of application in 2011

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Bertoli Range of Products

Homogenizers

• Industrial and laboratory models • From 10 l/h up to 50,000 l/h • Pressure up to 2000 bar

Piston Pumps

• Low, medium, high pressure • For low, medium, high viscosity products

Pumps for pieces

• For products with pieces or dry products

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The New “Michelangelo” Series: Capacities up to 2000 lt/h

Its vertical design has been

especially conceived to

maximally reduce its overall

dimensions, in order to be

easily installed on SKID or

small plants.

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Very compact

Easy to mantain

For liquid and viscous

products

Very reliable

Long lifetime of spare parts

Low noise level

The New “Raffaello” Series: Capacities up to 17.000 lt/h

The New “Leonardo” Series: Capacities up to 50000 lt/h

Our range of heavy-duty,

high pressure

homogenizer for liquid

and viscous products

Very compact and

reliable

Easy to mantain

Long lifetime of spare

parts

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TP Pumps Series

PUMP UP TO 40 BAR

from 2.800 up to 13.500

l/h. Pumping fluid

products with pieces

size up to 25 mm

keeping their form,

surface, and structure.

PX Pumps Series

PUMP UP TO 10 BAR

Volumetric sanitary two piston

pump with total through pass

valve commands by a servo

pneumatic actuator. Pumping

fluid products with pieces size

up to 50 mm.

Bertoli special piston pumps for conveying

products containing pieces

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Bertoli proposes a patented sterile water

generating system by microfiltration with

the aim to reduce the bacteriologic

level in the water by microfiltration,

using softened water from osmosis

system.

Generally the costs for the installation of

sterile water generating equipment are

recovered in less than a year due to the

great energy savings in respect of using

the steam.

Sterile water generating system for aseptic homogenizers

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1200 bar - 20 l/hour

2000 bar - 10 l/hour

Two homogenization stages

Product viscosity up to 20000 cP

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Laboratory homogenizers: “ATOMO” and “MOLECOLA”

“MOLECOLA”

1200 bar

120 l/hour

Two homogenization stages

Suitable for liquid and viscous products

“ATOMO”

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• Bertoli’s laboratory is equipped with efficient and

accurate specific devices at the disposal of

our customers

“Bertoli’s Laboratory”

• Research Laboratory

– to perform extensive tests on new products,

up to 2000 bar homogenizing pressure

• 24h, 7/7 days after sales service

• Scheduled maintenance programs

• To grant the best efficiency of Bertoli machines

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Bertoli Services

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1. 7000 working hours warranty on chrome coated

pistons thanks to the patended self aligning system

2. Roller bearing on the intermediate supports of the

crankshaft allowing a reduction of the total energy

consumption and preventing any risk of seizure

3. Only 2 bar feeding pressure for milk and milk like

products thanks to the innovatove design of the

compression head

4. Continuous flushing of the homogenizing valve shaft

and the safety valve in order to prevent any risk of

blockage

5. “Margherita” high efficency homogenizing valve, the

most simple and the most compact on the market

5 Good reasons to buy Bertoli

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Bertoli range of products

Compression head

Homogenizing group

Drive unit Gear reducer Belt transmission

Electric motor

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Electric fan

Cooling

water

Hydraulic

unit

Pneumatic

system

Homogenizer – Main auxiliary components

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Compressed air Emergency stop

Amperometric

Consumption

(overload)

Oil pressure

Electric

security

Open contact panel

Security Block devices

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Better alignment of piston

guaranteed by 2 guide rings

Reduction of the gasket wear

Improved piston durability up to

7000 working hours

Lower maintenance cost

Patented self Aligning pistons (I)

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Self centering piston system – two guides - β=0° Single guide - β>0°

PISTON LIFETIME: 7000 h

R&D plus: Self-centering piston patented system (II)

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Pistons available in:

Chromed

Ceramic

Tungsten carbide coating

O-ring available in:

NBR

Viton

EPDM

Poliuretan

FDA approved availabale

Piston gasket available in:

Standard NBR + cotton

CX for abrasive application

Kevlar for higher temperature

Dedicated geometry and

material for ultra high

FDA certification available

Gasket of high pressure pump

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Direct belt transmission

Speed reduction system for small / medium size machines

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Pendular gear reducer + reaction rod: up to 3 pistons machines

Speed reduction system for medium / big machines

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Fastened gear reducer + motor cross slide: 5 pistons machines

Speed reduction system: 5 pistons

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Main features: 1. Top quality roller bearings 2. High resistance alloy steel crankshaft (Nitrurized 5 pistons) 3. High resistance alloy steel pistons guide (chromed) 4. High resistance hardened steel pins

Transmission body 5 pistons

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Vibration sensor installed on:

Electric motor

Drive unit

Gear reducer

predictive

maintenance

Transmission system

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Compression head: Principle of high pressure pump

Compression head: R&D plus

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Compression head

geometry and

dimensions have been

optimized by means of

Finite Elements

analysis

Materials:

Duplex SAF2205 or SAF2507

Shot peened for ultra high pressure

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Gasket - free conic

valve seat

Conical valves

Materials:

•Stellite 20 (High wear resistance and toughness)

•Tungsten carbide (Nickel binder)

Ball valves

Standard applications Higher pressure

and viscosity

Types of valves for high pressure pump and homogenizers

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FE elements analyses in order to improve fatigue

and wear resistance and increase valve durability

Automatic valves: R&D plus

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Compression head: R&D plus

Low risk of cavitation

Low NPSHR due to:

offset between the valves axis and the center of the

compression head (the back position of the piston

allows a better filling of the chamber that minimizes

the cavitation risk in the machine)

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Compression head: R&D plus

New spacer design, improved NPSH and

cleanibility

Low risk of cavitation

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Water consumption for

homogenizing group &

overpressure valve ~ 20 [l/h]

WHO DOES THAT

CARE?

LOW VIBRATIONS OF THE

PNEUMATIC HEADS

NO RISK OF BLOCKAGE OF THE

OVERPRESSURE VALVE

Flushing of Safety valve & Homogenizing group

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Homogenizing valve:

it can be tuned to face several

products, a number of geometries

are available

Homogenizing head

Impact ring

Homogenizing group

Homogenization theory for milk

Turbulence

Cavitation

Shear stress

Impact

Generally in an HV the fluid is subject to

many forces that cause micronization of

its particles:

Changing the kind of product also the homogenization mechanism will change

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What happens in a Homogenizing Valve?

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Unhomogenized milk 150 bar 250 bar

Homogenization Results

The higher is the

homogenizing

pressure the lower

are the particles

dimensions

Homogenization efficiency

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1000 bar: cell disruption

800 bar: Cosmetic Emulsions

500 bar: Soya, Wax Emulsion, Lubricants

300 bar: Tomato ketchup, fruit

200 bar: Milk and dairy product

100 bar: Sauce and dressing, fruit juices

Homogenization efficiency

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The main idea is to increase the perimeter of the homogenizing valve in comparison with radial diffuser

Homogenizing group:

NEW High Efficiency Homogenizing Valve: Margherita

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Homogenizing Gap Area = πDh

Reaction Area depends on brand

Homogenizing group:

NEW High Efficiency Homogenizing Valve: Margherita

Tradizionali Valve (TV) Conventional High

Efficiency Valve

(CHEV)

Homogenizing Gap Area = πdH

Reaction Area = πd²/4

• The MARGHERITA fits perfectly in the Valve Housing of any existing

Bertoli Homogenizer.

• The MARGHERITA can be installed on any other homogenizer with

absolutely minor, or nil, modification of the outlet piping.

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Homogenizing group:

NEW High Efficiency Homogenizing Valve: Margherita

Patented PIIT2 - PR2009A000023

• The most compact • The smallest in size • The most stable

• The most simple • Pneumatically controlled

• Up to 30% energy saving

Homogenizing Gap Area = Lh

Reaction Area = πd²/4 of an

equivalent TV (same capacity)

L = Length of inner perimeter of Margherita valve = πDh of an equivalent CHEV.

Basic principle: Same Area of Homogenizing Gap as CHEV, compressed

in the outside dimensions of a TV.

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Homogenizing group comparison:

NEW High Efficiency Homogenizing Valve

Margherita VS Standard Homogenizing Valve

0

0,5

1

1,5

2

2,5

3

0,00 0,50 1,00 1,50 2,00 2,50 μm

MARGHERITA 140bar

STANDARD VALVE 170bar

MARGHERITA 170bar

STANDARD VALVE 200bar

MARGHERITA 200bar

Thanks for your kind attention.

BERTOLI s.r.l.

Via Brodolini 1, 43056 S. Polo di Torrile (PR) - Italy

Tel. +39 0521 954711 - Fax +39 0521 293704

www.bertolisrl.eu

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