HIGH SHEAR

I N - L I N E M I X E R SS I L V E R S O N

For over 50 years Silverson has

specialised in the manufacture of quality

High Shear Mixers for processing and

manufacturing industries worldwide.

With customers in over 140 countries and

serving industries as diverse as food,

pharmaceuticals, cosmetics, chemicals,

luboils and petrochemicals, Silverson has

become a world leader in the field of High

Shear Mixing. Time and again companies

specify Silverson Mixers as the “standard”

equipment for their manufacturing

processes.

A truly international company, Silverson is

represented by a network of associated

companies, distributors and agents in

over 40 countries, serving North

America, Europe, Asia, Australasia,

South America and Africa.

Silverson

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� SPEED The exceptionally rapidSilverson mixing action substantiallyreduces process times compared withconventional agitators and mixersand can reduce mixing times by up to90%.

� VERSATILITY The advantage ofthe Silverson approach to mixing isthat any one machine can performthe duties that in the past may haverequired several different pieces ofprocess equipment.

Unrivalled versatility allows anymachine to be adapted to perform thewidest range of mixing applications -mixing, emulsifying, homogenising,disintegrating, dissolving, dispersing,blending, particle size reduction andde-agglomerating.

� AERATION FREE As theSilverson In-Line mixer and theassociated vessel and pipework forma closed system, the mixing processis completely aeration free. This isparticularly important for applicationswhere air entrainment creates aproblem.

� SELF-PUMPING Silverson In-Line mixers provide a high volume centrifugalpumping action which, in most cases, will be sufficient for the processrequirements without the need for auxiliary pumps.

If, due to viscosity, vertical head or pipeline losses, the In-Line mixer’s output fallsbelow the required figure, it may be supplemented by the insertion of an auxiliarypump into the system without reducing the efficiency of the mixer.

� GUARANTEED EFFICIENCY The Silverson In-Line mixer design makes itphysically impossible for any materials - liquid or solid - to pass from the inlet tothe outlet without being subjected to intense mechanical and hydraulic shear asthey pass through the rotor/stator workhead. Bypassing is impossible.

� LOWER POWER REQUIREMENTS As the Silverson In-Line mixer’s energy isconcentrated on processing the small volume of material inside the workhead at anygiven moment, power is not wasted moving large volumes of liquid and consequentlyless power is normally required than for the equivalent batch mixer. This isparticularly beneficial when processing large volumes of material.

� INCREASING EXISTING PRODUCTION Where existing agitators andconventional mixers are being used, the addition of a Silverson In-Line mixer will greatlyreduce the process time, whilst at the same time improving product uniformity. Easilyinstalled, Silverson In-Line mixers can substantially increase existing production with aminimum of capital investment by saving the need for additional mixing vessels, pipeworkand auxiliary equipment.

The Silverson Advantage

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� BLENDING In blending liquids ofsimilar or greatly varying viscosities, theunique Silverson mixing action canrapidly produce a guaranteedhomogeneous product, normally in asingle pass.

� EMULSIFYING ANDHOMOGENISING The special highshear rotor/stator design means thatemulsions (typically in the range of 0.5to 5 microns) can be easily achieved, inmany cases dispensing with the needfor more costly and complicatedequipment such as high pressurehomogenisers.

� DISINTEGRATION All Silversonmixers are able to disintegrate matter of animal, vegetable, mineral or syntheticorigin in a single operation.

� PARTICLE SIZE REDUCTION For particle size reduction, the high shearrotor/stator action will ensure the rapid and uniform milling of both solid and semi-solidmaterials into either solution or fine suspension. The degree of size reduction willalways depend on the hardness or toughness of the product but in many applicationsthe use of a Silverson will dispense with the need for conventional size reductionequipment, such as dispersers/cavitation mixers, grinders and mills and at a fraction ofthe cost.

� GELLING AND SOLUBILISING The solution of gums, alginates, C.M.C., carbopols, etc., can be a slow and difficult process if a conventional agitator or mixer isused. Agglomerates frequently form and these can only be removed slowly by the washingaction of the agitator.

The addition of a Silverson In-Line mixer to the system however will greatly reduce theprocess time and improve the product product quality and uniformity.

� DE-AGGLOMERATION The Silverson rotor/stator workhead rapidly disintegrates anddisperses agglomerates to give a totally uniform and homogeneous mix.

What will the Silverson do?

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� EXPERIENCE AND KNOW HOWSilverson has been the leader in High Shear Mixing technology for over 50 years and has built up a

detailed and extensive knowledge of mixing process requirements. This accumulated knowledge

enables our technical staff and sales representatives to clearly identify a client’s needs and

recommend the type of mixer most suited to provide an efficient and economical solution.

� EXTENSIVE TEST FACILITIESAvailable for the use of all clients, Silverson

maintains a dedicated test facility equipped with a wide

range of laboratory and production scale machines.

Here customers may test new

products and discuss their applications with our

technical staff. If preferred, Silverson mixers can be

provided for on-site trials at the customer’s own

premises to allow evaluation when operating under

actual production conditions.

� CUSTOMISATIONIncreasingly today’s process manufacturers require

equipment to be designed to meet their own particular

needs. Silverson, working in close co-operation with the

customer, has a positive approach and flexibility which

allows custom designed and built mixers specifically

suited to the individual user’s requirements.

� WORLDWIDE SUPPORT A truly international

company, Silverson is represented by a network of

associated companies, distributors and agents in over

40 countries, serving Europe, North America, Asia,

Australasia, South America and Africa.

� INSTALLATION Silverson offers expert advice on the installation of their equipment

and, if required, our local technical staff can assist and supervise the installation and

start up.

� AFTER SALES SERVICE With over 50 years of experience Silverson realises the

importance their customers place on reliable and rapid back-up service.

Our large stock of manufactured parts enables us to despatch most standard spares the same

day they are ordered.

Silverson Service

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The high speed rotation of the

rotor blades within the

precision machined mixing

workhead exerts a powerful

suction, drawing liquid and

solid materials into the

rotor/stator assembly.

Centrifugal force then drives

materials towards the periphery

of the workhead where they are

subjected to a milling action in

the precision machined

clearance between the ends of

the rotor blades and the inner

wall of the stator.

This is followed by intense

hydraulic shear as the materials

are forced, at high velocity, out

through the perforations in the

stator, then through the

machine outlet and along the

pipework. At the same time,

fresh materials are continually

drawn into the workhead,

maintaining the mixing and

pumping cycle.

1.

2.

3.

How the Silverson Works

Single Pass MethodThere are basically three types of operation for which single pass processing can successfullybe used.

� CONTINUOUS BLENDING Theingredients are metered into the mixer or amanifold just prior to the rotor/statorworkhead. This will ensure that productsthat react together are mixed immediatelyon contact. This method is ideal forcontinuous liquid/liquid blending and forproducts where aeration must be avoided,e.g. detergents.

� SERIES PROCESSING In certain cases where a higher degree of homogenisationor comminution is required than can be obtained by a single pass through the In-Linemixer, it is possible to achieve the required results by using two or more machines inseries.

� PRE-MIX METHOD The ingredients are coarsely pre-mixed in a holding vesselwith a Silverson batch mixer or a simple agitator. A single pass through the In-Linemixer will then ensure an agglomerate free homogeneous product. All the product mustpass through the In-Line mixer’s rotor/stator workhead as by-passing is impossible.

Recirculation MethodWhere a higher degree of homogenisation,emulsification or particle size reduction isrequired, a recirculation method isrecommended. Here product is drawn fromthe bottom of the vessel, processedthrough the high shear rotor/statorworkhead and passed back into the top ofthe vessel.

In small vessels this will ensure adequatein-tank movement but in larger vessels anauxiliary in-tank mixer or agitator will berequired.

Additional fluid ingredients can be fed intothe inlet pipeline and will be drawnimmediately into the workhead anduniformly mixed before entering the vessel.

Where quality assurance (QA) demands aset number of passes through therotor/stator workhead the product can bepassed back and forth between twoseparate vessels.

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How to Use theIn-Line Mixer

� MATERIALS OF CONSTRUCTIONUnless otherwise stated, all product

contact parts are constructed in Grade

316 Stainless Steel. Where required,

machines can be constructed in non-

standard materials, such as carbon steel

or Hastelloy.

� MOTORS The standard range of

motors available includes:

TEFV: Totally Enclosed Fan Ventilated.

ExN T3: Non-sparking

EExd: Flameproof

CENELEC/EURONORM/BASEEFA

Groups 2A, 2B, T1 - T4

IP55 Weatherproof/Hoseproof enclosure is standard for all motors. Other types of

enclosures and standards i.e. C.S.A., U.L., or P.T.B. certified are available on request.

� OPERATING PRESSURES All standard models are designed for operation on

pressures not in excess of 40 psi (2.8 bar). These models can also be supplied with

pressure ratings of 100 psi (7 bar) and 200 psi (14 bar). High pressure units, i.e. rated

over 200p psi (14 bar) are available on request.

� INLET AND OUTLET CONNECTIONS All standard sanitary screw or flange

fittings are available on request (e.g. ISS, DIN, RJT, SMS, ASA, Tri-clamp etc.).

� CLEANING Silverson In-Line mixers are designed for cleaning in place (CIP), a

short run between successive operations in water, detergent or an appropriate solvent

being all that is required. If manual cleaning is necessary, dismantling is easy and

downtime minimal.

� SEALING Single Mechanical Shaft sealingThe In-Line mixer shaft is normally sealed by a single mechanical shaft seal with

carbon versus ceramic faces and viton elastomers. Other elastomers and PTFE

are available as optional extras.

Tungsten carbide versus silicon carbide hard faces are recommended when

processing mildly abrasive products.

Double Mechanical Shaft sealingDouble mechanical shaft seals are required when processing products that are

abrasive, sticky or viscous or when the system is under vacuum.

The seals are mounted back to back in a chamber which must be flushed with a

compatible non-flammable fluid at a pressure not less than 15 psi (1 bar) in excess

of pressure in the system. This type of arrangement is suitable for operation under

positive pressure, atmospheric pressure and vacuum. Sealant flushing systems

can be supplied as an optional extra.

Technical Specification

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A comprehensive range of workheads andscreens is available for all Silverson highshear mixers. These easily interchangeable

workheads offer great versatility by allowing any machine to be adapted to perform a wide range ofmixing operations including emulsifying, homogenising, disintegrating, dissolving, dispersing,blending, particle size reduction and de-agglomerating. Changing from one head or screen toanother is quick and simple.

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� GENERAL PURPOSE DISINTEGRATING HEADUsed for a wide range of applications, thishead will give the greatest throughput.Suitable for the blending of liquids of similaror greatly varying viscosities, its uses alsoinclude the disintegration of solid and semi-solid materials.

� SQUARE HOLE HIGH SHEARSCREEN™

The configuration and fine internaltolerances of this stator provideexceptionally high shear rates which areideal for the rapid size reduction ofsoluble and insoluble granular solids. It isalso suitable for the preparation ofemulsions, gels and thickeners and finecolloidal suspensions.

� SLOTTED DISINTEGRATING HEADFor the disintegration of fibrous materialssuch as animal and vegetable tissue, as well as the disintegration and solubilisationof “elastic” materials such as rubbers andpolymers.

� EMULSOR SCREENSThese screens are suitable for liquid/liquidpreparations and are especially useful forall emulsions. Emulsor screens areavailable in fine, medium or coarseperforations

Interchangeable Headsand Screens

Each machine employs the special“Interchangeable” SilversonRotor/Stator Mixing Head, whichallows it to be used on a widevariety of different products, whilethe robust and simple constructionensures that cleaning andmaintenance are kept to anabsolute minimum.

� INTERCHANGEABLEWORKHEADS Interchangeableworkheads are available to adaptthe machine for varying processes.Changing from one head or screento another is quick and simple. Seepage 9.

� NO BY-PASSING The In-Line mixer’s design makes it physicallyimpossible for any materials - liquid or solid - to pass from the inlet to theoutlet without being subjected to intense mechanical and hydraulic shear as itpasses through the rotor/stator workhead. By-passing is impossible.

� SELF PUMPING Silverson In-Line mixers provide a centrifugal pumpingaction which, in many cases will be sufficient for the process flow requirementswithout the need for auxiliary pumps.

� HYGIENIC CONSTRUCTION Designed to comply with FDA, 3A andGMP standards, these machines are ideally suited for industries whereCleaning In Place (CIP) procedures are the norm. Not only do these includethe food, pharmaceutical and cosmetic industries but also more diverseindustries such as chemicals and paints wheremodern manufacturing techniques and maximumequipment utilisation require a rapid changeover fromone product to another.

The high standard of finish and crevice freeconstruction help set new standards in In-Line mixerhygiene.

� EASY MAINTENANCE The robust and simpleconstruction ensures that maintenance is easy anddowntime minimal. Quick release nuts for the front coverare available on request.

� VERTICAL IN-LINE Standard multi-purpose In-Linemixers are also available in a vertical configuration. Their

construction allows additional inlets to be fitted where two ormore individual ingredients need to be fed into an In-Linemixer.

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Standard Multi-purposeIn-Line Mixers The Silverson “standard” series of

multi-purpose In-Line mixers areable to perform the widest variety ofapplications - mixing, emulsifying,homogenising, disintegrating anddissolving - with an efficiency andflexibility unmatched by othermachines.

� HIGH CAPACITIES TheSilverson “standard” series ofmulti-purpose High Shear In-Line mixers are available in awide range of sizes with self-pumping capacities from 15litres up to 200,000 litres perhour.

These high self-pumpingcapacities can substantiallyreduce existing mixing timesresulting in increasedproduction with a minimum ofcapital investment by savingon the need for additionalmixing vessels, piping andauxiliary equipment.

In many cases a SilversonIn-Line mixer can be used toreplace an existingcentrifugal pump to provideboth processing andpumping benefits.

� HIGH SHEAR RATESThe largest Silverson In-Linemixers provide some of thehighest rotor tip speeds andshear rates in the industry.

These high shear rates givebetter particle size reduction,emulsification, dissolving anddispersion, in many caseseliminating the need for moreexpensive and complicatedequipment such as colloidmills, high pressurehomogenisers and mediamills.

� FLEXIBILITY Suitablyinstalled, any Silverson HighShear In-Line mixer caneasily be used to mix two ormore individual processvessels. Alternatively it canbe mounted on a mobilebase (see optional extras -page 17) so it can be movedfrom vessel to vessel.

Standard Multi-purposeIn-Line Mixers

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International Standardsand changing processrequirements meanthat today’spharmaceutical,biotechnology and foodcompanies aredemanding everincreasing standards ofhygienic construction inthe process equipmentused.

To meet futuredemands Silverson hasdeveloped a new Ultra-Hygienic In-Line Mixer.

Designed to complywith FDA, 3A, GMPand EHEDG standards,

these machines are ideally suited for industries where advanced Clean-In-Place (CIP)and Sterilise-In-Place (SIP) are required.

� DESIGN The UHLS Ultra-Hygienic In-Line Mixer series has all the qualities andflexibility of the Silverson Standard Multi-Purpose series but incorporates manyadditional features. These include:

- Self-draining bottom outlet- Single piece inlet plate and stator- Hygienic Metal Bellows shaft seal- Electropolished finish to 0.5 µm Ra- Crevice-free construction- No metal-to-metal contact- No castings - no porosity- All 316L stainless steel construction of wetted parts- Environmentally friendly - minimises cleaning materials

Stainless steel motors are available as an optional extra.

� INTERCHANGEABLE WORKHEADS Interchangeable workheads are available toadapt the machine for varying purposes.

Separate stators and Inlet Mounting Plates are available for less stringent applications or tosuit individual customer preferences.

� REDUCED OPERATING COSTS The Ultra-Hygienic In-Line Mixer is designed forClean-In-Place (CIP)/Sterilise-In-Place (SIP). Its hygienic construction shortens the required

CIP/SIP cycle time and minimises the use of cleaning chemicals. In addition to this, the factthat manual dismantling and cleaning is not required significantly reduces operating costs,

increases reliability and avoids accidental damage to the machine’s internal components.

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Ultra-Hygienic In-Line Mixers

The Multi-stage In-Line Mixer has beenspecificallydeveloped for thoseapplications where ahigher degree ofshear is requiredthan is available fromthe single stagestandard multi-purpose In-LineMixers.

It differs from thestandard single stageIn-Line Mixer in thatits multi-toothed rotorconsists of twoconcentric sets ofblades and teethrunning against twoseparate stators.

� INTENSE SHEAR The Multi-stage In-Line’s design quadruples the number ofshearing actions per revolution of the rotor resulting in substantially faster mixingtimes by reducing the number of recirculation passes required. The use of twoconcentric stators and multi-toothed rotors also increases the number of products thatcan be processed in a single pass.

As material passes through the Multi-stage workhead it is subjected to increasing ratesof shear. The inner rotor subjects the product to an initial mixing action, reducing thesize of large particles and producing a uniform pre-mix. The inner rotor also acts as theprime mover for the product, forcing it into the outer multi-bladed rotor/stator assemblywhere the greatly increased tip speeds and shear rates complete the mixing cycle byproducing a completely homogeneous product.

� STATOR SELECTION As with standard In-Line mixers, a complete range ofworkheads and stator screens is available for the Multi-stage In-Line mixer. Using twoseparate stators allows the user to optimise the mixer configurations to suit each individualprocess.

Multi-stage In-Line Mixers

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The Multishear Mill has been specificallydeveloped for those applications where ahigher degree of shear is required than isavailable from the standard In-Line mixers.

It is designed to meet the requirement for ahigh speed machine which eliminates, asfar as possible the need for conventionalmedia or colloid milling.

The Multishear Mill differs from thestandard In-Line mixer in that its rotorconsists of three or four sets of finelymachined teeth running against three orfour sets of stators.

This multistage rotor/stator workheadprovides intense high shear with a threestage machine performing over 3 millionindividual shearing actions per second anda four stage machine over 5 million persecond.

This high degree of shear eliminates theneed for conventional media milling, excepton the hardest of solids. However, even ifconventional milling is still needed, rapidpre-milling by the Silverson Multishear Millwill enable the product to be passedthrough the conventional media mill at amuch faster rate. This is because mostmedia mills work best when fed with aproduct of a uniform and low particle size.The total process time therefore will still beonly a fraction of what would be needed byconventional methods alone.

� TYPICAL APPLICATIONS - Pigments - Dyestuffs- Presscakes- Titanium dioxide- Bone slurries etc.

Multishear Mill

This range of In-Line mixers has beenspecifically developed for thedisintegration and solubilisation ofpolymers into bitumen for theproduction of modified bitumens.

� DESIGN The design is similar to thestandard multi-purpose In-Line mixers,but the cylindrical body walls arejacketed for oil heating. This ensuresthat the product cannot cool and solidifyinside the machine.

When processing products that solidifywhen cold it is essential to ensurethorough heat saturation before start-up. The design of these machinesensures that heat can reach all areaswhere residue may be present.

Sealing is by means of agraphite/carbon fibre gland packingwhich is designed for operation on bitumens.

Standard mechanical shaft seals are available according to the application on request.

As with all Silverson units, interchangeable stators are available to adapt the machinefor varying processes.

� MODIFIED BITUMEN PRODUCTION Polymers and rubbers such as SBS,APP, PVC, EVA and Butyl are blended with bitumen primarily for use in the productionof road surfaces and roofing felts. These polymers modify the bitumen to improve itsphysical stability, flexibility and resistance to extreme temperatures.

While some polymers dissolve readily, others such as SBS are more difficult todissolve/disperse, and require high shear to achieve a satisfactory mixing time.Silverson Jacketed In-Line mixers are widely used for this purpose. Thebitumen/polymer mix is recycled through the Silverson In-Line mixer where the highshear rotor/stator workhead rapidly disintegrates the polymer pieces. This high shearaction exposes constantly increasing areas of fresh polymer to the surrounding bitumen,so reducing the process time.

� TYPICAL APPLICATIONS - Polymer modified bitumen for the production of modified road bitumen and roofing felts.- Bitumen emulsions- Underseals and waterproofing compounds- Bitumen cable insulation.

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Jacketed In-Line Mixer

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All dimensions shown are in millimetres. The dimensions shown are approximateonly and certified diagrams should be used for installation purposes. Silversonreserves the right to change dimensions and specifications without notice.

Diagrams and DimensionskW

1.5

4

7.5

15

37

RPM

3000

3000

3000

3000

3000

TEFVA

483

641

641

841

1135

EExDA

476

651

651

841

1085

EExDB

230

289

289

316

370

C

56

79

79

84

111

D

146

197

197

235

356

TEFVB

140

189

189

239

325

E

167

225

225

284

479

..MODEL

275LS

425LS

450LS

600LS

700LS

Inlet/

Outlet

38

50

50

75

100

kW

1.5

4

7.5

15

RPM

3000

3000

3000

3000

TEFVA

559

673

762

1029

EExDA

584

724

965

1067

C

70

76

76

108

D

66

98

98

133

B

279

406

406

610

..MODEL

275LV

425LV

450LV

600LV

Inlet/

Outlet

38

50

50

75

kW

1.5

4

7.5

15

37

RPM

3000

3000

3000

3000

3000

TEFVA

524

692

692

911

1227

EExDA

518

702

702

911

1177

EExDB

230

289

289

316

370

C

98

129

129

156

203

D

133

181

181

213

330

TEFVB

140

189

189

239

325

E

167

225

225

284

479

..MODEL

275LS

425LS

450LS

600LS

700LS

Inlet/

Outlet

38

50

50

75

100

Dimensions of larger models available on request.Capacities available on request

Dimensions of larger models available on request.Capacities available on request

Dimensions of larger models available on request.Capacities available on request

� MOTOR POWER RATINGS Motor power ratings in this brochure are based onoperation on 50 cycle electricity supply and on materials of viscosity of up to 10,000centipoise and specific gravity up to 1.4. For operation on 60 cycle electricity supply(because of the higher shaft speeds) and on materials of higher viscosity or specificgravity higher power motors will be required.

If variable speed is particularly required it can be achieved by the separateinstallation of a frequency inverter and these are available as an optionalextra on certain machines. Electrical switchgear is not supplied.

� OPTIONAL EXTRAS

Hard Tipped Rotors Available as an optional extra for processingabrasive products.

Autoclaving Quick release facilities may be incorporated to allow the mixerto be detached from its motor to permit autoclaving.

Special Paint Finish Epoxy paint or other finishes on non-contact partsare available if required.

Multiple Inlet Connections Additional inlet connections and specialmanifolds are available for applications where two or more individual productsneed to be fed into the In-Line mixer, or where product streams need to bekept separate until they are processed.

Mobile Trolleys Mobile trolleys constructed in either 304 stainless steel ormild steel with an epoxy paint finish are available for situations where the In-Line mixer has to be moved from vessel to vessel.

Although all Silverson In-Line mixers have an efficient non-positive pumpingaction, it is important to remember that they are primarily mixers - not pumps.

The machine should be sized by the application and not the throughput. This isparticularly important if the product requires emulsification, homogenisation orparticle size reduction.

The size of machine required and its pumping efficiency will depend on the productcharacteristics, especially viscosity and specific gravity, and the pipework layout.

Silverson’s technical staff have extensive knowledge of in-line mixing applications andcan offer expert advice in selecting the correct size machine. Their recommendationscan be confirmed by trials either at Silverson’s dedicated test facility or on-site.

Selecting the CorrectMachine

Motor Power Ratings andOptional Extras

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� MULTI-PURPOSE

LABORATORY MIXERS

For everyday laboratory work Silverson offers a full range

of multi-purpose laboratory mixers with capacities from

1 ml to 12 litres.

� HIGH SHEAR BATCH MIXERS

This highly efficient range of mixers can dramatically

improve product quality and offers considerable

reductions in processing times. For increased flexibility,

small to medium scale machines can be used with a

mobile floor stand.

� FLASHBLEND

For high speed entraining and instant dispersion of powder into

liquid. Designed to produce a homogeneous agglomerate-free

solution/dispersion without entraining air, the Flashblend range

comprises units capable of incorporating up to 33,000 lbs/hour of

powder.

� DISINTEGRATOR 2500

SOLID/LIQUID MIXING SYSTEMS

Designed to disintegrate and solubilise whole bales or

blocks of rubbers and polymers rapidly without the need

for any preliminary crumbling. Other uses include

disintegration of large solids in the food industry, dispersion

of filter cakes and disintegration of solid gums, resins and

varnishes, etc.

From small laboratory units to 8,000 gallon production scale machines, the Silverson

range offers consistently high quality equipment producing uniform and reliable results.

Other Silverson Products

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United KingdomCorporate Headquarters

Silverson Machines Ltd.Waterside, CheshamBuckinghamshire HP5 1PQEnglandTel: +44 (0) 1494 786331Fax: +44 (0) 1494 791452Email: sales@silverson.co.uk

United States

Silverson Machines, Inc.355 Chestnut StreetEast Longmeadow, MA 01028Tel: +1 (413) 525-4825Fax: +1 (413) 525-5804Email: silverson-usa@silverson.com

France

Silverson France12 Boulevard Louise Michel91030 EVRY CEDEXFranceTel: +33 (0) 1 60 77 91 92Fax: +33 (0) 1 60 77 81 88Email: info@silverson.fr

Asia Pacific

Silverson Machines, Ltd.70/72 Kian Teck RoadSingapore 628798Tel: +65 626-21565Fax: +65 638-80891Email: silversonasia@pacific.net.sg

Silverson can be found on the World Wide Web at www.silverson.com

Silverson® is a registered trademark of Silverson Machines.

Square Hole High Sheer Screen™ is a trademark of Silverson Machines.