INNOVATIVE SOLID BOWL CENTRIFUGE TECHNOLOGY

INNOVATIVE SOLID BOWL 

CENTRIFUGE TECHNOLOGY

2 

Solid bowl centrifuge technology 

Modern centrifuges are used 

in technical processes for the 

mechanical separation of mixtures 

of solids and liquids. 

Sedimentation, centrifugation, 

and filtration are mechanical 

separation processes, in contrast 

to distillation, incineration 

and thermal drying, which are 

Modern centrifuges have many 

advantages in comparison to 

other separation processes 

such as filtration and sedimentation. 

Compact designs, 

thermal separation processes. 

In many processes, mechanical 

separation is primarily responsible 

for product quality, 

production efficiency and environmental 

control. Mechanical 

separation processes are 

found in practically all industrial 

sectors, including food, chemi- 

sealed construction to control 

odor emissions and avoid contamination 

of the product, ease 

of operation with continuous or 

automatic control systems, 

cal, pharmaceutical, biotech, 

mineral, and environmental. 

Advantages of modern centrifuges 

and limited replaceable operating 

parts such as filter media or 

filter aids make centrifuges advantageous 

to use.

Applications 

The following basic process 

operations are possible with 

solid bowl decanter centrifuges: 

• Clarification of liquids 

• Dewatering of sludges and 

suspensions 

• Thickening of slurries 

• Separation of three-phase 

mixtures, i.e. two immiscible 

liquid phases and a solid 

phase 

® = registered trademark in various countries 

• Classification of solids in a 

suspension according to particle 

size (wet classification) 

• Sorting of solids by density. 

To obtain optimum results, solid 

bowl decanter centrifuges 

must be custom designed to 

suit specific separation 

processes. 

FLOTTWEG CENTRIFUGES 

can more effectively help one 

reach their processing goals by 

offering a variety of basic designs, 

such as the DECANTER, 

TRICANTER ® , SEDICANTER ® 

and SORTICANTER ® . Solid 

bowl centrifuges are used in 

most areas of mechanical 

liquid-solid separation. 

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Typical processes 

Foodstuffs 

Animal fat 

Blood 

Brewer’s yeast and trub 

Casein 

Clarified butter 

Coffee essence 

Corn stillage 

Drinking water treatment 

Fish meal 

Fish water 

Fruit juices 

Gelatin 

Lactose 

Meat extracts 

Molasses 

Mycelia 

Potato protein 

Potato scrapings 

Proteins 

Sorbose 

Soybean flour 

Starches 

Vegetable extracts 

Vegetable juices 

Vegetable oils 

Wine and beer 

Examples from more than 300 different applications 

Chemical products 

Aluminum hydroxide 

Barium sulfate 

Bauxite 

Bentonite 

Calcium carbonate 

Calcium fluoride 

Calcium sulfate 

Carbide sludges 

Caustic soda 

Cellulose derivatives 

Clay sludge 

Color pigments 

Cryolite 

DMT 

Epoxy resin 

Fluorescents 

Graphite 

Gypsum 

HDPE 

Iron hydroxide 

Iron oxide 

Kaolin 

Latex 

Lead oxide 

Lead sulfate 

Lignine sulfate 

Magnesium hydroxide 

Mica 

Mineral oil 

Nickel hydroxide 

Pharmaceutical intermediates 

Phosphate compounds 

Phosphoric acid 

Plastics derivatives/additives 

PMMA 

Polypropylene 

Polystyrene 

PVC 

Silica 

Silicate 

Sodium chloride 

Titanium dioxide 

Tricalcium phosphate 

Various salts 

Vitamins 

Zinc carbonate 

Zinc oxide 

Zinc sulfate 

Miscellaneous 

Coal tar cleaning 

Drilling mud 

Hide scrapings 

Industrial wastewater treatment 

Manure 

Municipal wastewater treatment 

Oil sludges 

Paint sludges 

Plastics sorting/recycling 

Steelworks sludges

Solid bowl centrifuges 

The basic principle of the solid 

bowl centrifuge has been 

known since the end of the 

19th century. Over the course 

of time, technology improvements 

along with the availability 

of high strength and corrosion 

resistant raw materials 

have allowed solid bowl de- 

canters to be applicable to 

many processes. The utilization 

of electronic and electromechanical 

measuring and 

control components has improved 

the performance and 

availability of the machines. 

The basic design of a solid 

bowl centrifuge is relatively 

simple and can be customized 

by Flottweg for different requirements. 

Of all modern industrial 

centrifuges, solid bowl 

centrifuges have the broadest 

range of application. 

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FLOTTWEG DECANTER CENTRIFUGES 

Feed 

The slurry is fed through a stationary 

pipe into the feed zone 

located in the center of the 

scroll. The product is then accelerated 

circumferentially and 

delivered through distribution 

ports into the bowl. 

Bowl 

The bowl has a cylindrical/ 

conical shape and rotates at 

a pre-set speed optimal for the 

application. The slurry rotates 

solids discharge 

FLOTTWEG DECANTER for the liquid-solid separation 

with gravity overflow of the liquid phase (centrate) 

with a different scroll design or 

by modifying an existing scroll. 

Scroll pitch and single or multiple 

flight configurations are important 

design variables. 

with the bowl at the operating 

speed and forms a concentric 

layer at the bowl wall. The 

solids contained in the slurry 

are deposited against the bowl 

wall by centrifugal force. The 

length of the cylindrical bowl 

section and the cone angle are 

selected to meet the specific 

requirements of an application. 

Scroll 

The scroll rotates at a slightly 

different speed than the bowl 

Eccentric – adjustable weir plates (patented) 

and conveys the deposited 

solids toward the conical end 

of the bowl. This differential 

speed determines the residence 

time of the solids in the 

bowl. Residence time is an important 

variable for the dry 

solids content. It can be adjusted 

by changing the differential 

speed of the scroll thus 

providing optimal separation. 

If the physical properties of the 

slurry change, FLOTTWEG 

DECANTERS can be supplied 

liquid discharge by gravity 

feed inlet

Solids discharge 

Settled solids are ejected 

through ports at the conical 

end of the bowl into the solids 

housing and fall through to the 

discharge chute. 

Materials of construction 

FLOTTWEG uses high-quality 

stainless steel for all wetted 

areas. Bowl and scroll castings 

are made from centrifugal cast 

high strength and corrosion 

resistant stainless steel. 


Rotor bearing 

A special selection and 

arrangement of bearings provides 

long life and exceptional 

reliability. A central lubrication 

system supplies either grease 

or oil to bearings. 

Overflow weirs 

The clarified liquids flow to the 

cylindrical end of the bowl 

where they exit over weir 

plates. Easily adjustable precision 

weir plates allow for the 

FLOTTWEG DECANTER with pressurized centrate discharge 

precise adjustment of the pond 

depth in the bowl. Overflow is 

then collected in a centrate 

chamber and discharged by 

gravity. 

Impeller (skimmer) 

The clarified liquid can also be 

decanted with an impeller and 

discharged from the bowl under 

pressure. This eliminates 

the need for a separate centrate 

pump. The FLOTTWEG 

adjustable impeller is an engi- 

Adjustable impeller 

neering refinement that permits 

quick and precise adjustment 

of the pond depth during 

operation to accommodate 

changing conditions. 

liquid discharge 

under pressure 

feed inlet

8 

FLOTTWEG TRICANTER ® 

3-phase separation 

The FLOTTWEG TRICANTER ® 

enables three-phase separation, 

i.e. the simultaneous 

separation of two immiscible 

liquids with different densities 

and one solid phase, provided 

that the solid phase is the 

heaviest phase. The most important 

difference from a decanter 

is the separate discharge 

of the two liquid phases. The 

FLOTTWEG TRICANTER ® 

discharges the heavy liquid 

through an adjustable impeller 

under pressure and the light 

phase by gravity. The adjustable 

impeller allows adjusting 

the separation zone and degree 

of separation within the 

machine during operation. This 

optimizes purity of the liquids 

and may possibly eliminate 

downstream equipment. 

solids discharge liquid discharge 

FLOTTWEG TRICANTER ® (THREE PHASE DECANTER) 

Discharge of the centrate: heavy liquid phase under pressure, light phase by gravity 

Adjustable impeller 

discharge 

of heavy phase 


feed inlet

FLOTTWEG SORTICANTER ® 

The innovative FLOTTWEG 

SORTICANTER ® is designed 

for the separation of solids by 

density. The process is aided 

by a carrier liquid with a specific 

gravity that is between the 

densities of the two solid 

streams to be separated. 

The patented FLOTTWEG 

SORTICANTER ® consists of a 

cylindrical conical bowl with a 

second inner cone at the cylindrical 

end and a double acting 

FLOTTWEG SORTICANTER ® for plastic recycling 

flights wound in the opposite 

direction to those conveying 

sedimentated solids transfer 

the lighter solids across a drying 

zone to the exit ports. The 

liquid is skimmed off and discharged 

under pressure by an 


scroll conforming to the inner 

contour of the bowl. 

The bowl and lagging scroll 

rotate at a high speed in the 

same direction. The solid-liquid 

mixture is conveyed through 

the centrifuge feed pipe and inlet 

ports in the scroll body into 

the bowl and accelerated to 

the bowl speed. Centrifugal 

force causes the solids which 

are heavier than the carrier 

liquid to settle against the 

impeller at the cylindrical end 

of the bowl. 

After an intermediate cleaning 

step, liquid may be recycled as 

carrier liquid. Carrier liquids 

with different densities enable 

bowl wall. The scroll conveys the 

deposited layer of heavy solids 

toward the conical bowl section, 

over the drying zone and 

ejects them through ports into 

the stationary solids housing 

and down the discharge chute. 

The solids which are lighter 

than the carrier liquid float and 

are conveyed with the liquid 

toward the cylindrical end of 

the bowl. When the floating 

particles have reached the 

second inner cone, scroll 

the user to shift the effective 

interface zone. 



solids discharge of heavy phase solids discharge of light phase 

feed inlet 

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FLOTTWEG SEDICANTER ® 

The FLOTTWEG SEDICANTER ® 

is used for the separation of 

solids from liquids when the 

solids form a soft but flowable 

sediment. 

The SEDICANTER ® is used in 

cases where the solids are too 

fine-grained to be processed 

in a normal decanter and the 

sediment cannot be easily discharged 

from the decanter due 

to its soft consistency. During 

the separation process, the 

FLOTTWEG SEDICANTER ® 

• Gastight machine design 

• Clean-in-place provisions 

available to meet pharmaceutical 

industry standards 

liquid and solids move in the 

same direction without having 

to pass through a turbulent 

inlet zone. The centrate is discharged 

through an adjustable 

impeller within the scroll. The 

sediment formed in the 

SEDICANTER ® , the heavy 

phase, is accumulated and 

pressed out of the bowl under 

an immersion disc. 

Applications for the 

SEDICANTER ® include “soft 

• Fluoropolymer rotor seals 

available for critical applications 

FLOTTWEG SEDICANTER ® S4E-3 

products” such as biomasses, 

yeast suspensions, protein 

suspensions and fermentation 

broths. 

Technical features: 

• Up to 10,000 x g centrifugal 

force possible to facilitate the 

separation of very fine, slowsettling 

solids 

• Uniquely designed feed distributor 

and bowl seal to prevent 

foaming in the product 

inlet zone 




• Optional drives including the 

FLOTTWEG SIMP-DRIVE ® . 

feed inlet

Centrifuge cleaning 

Centrifuges must always be 

flushed clean before shutdown. 

Depending on the 

application, different cleaning 

systems may be incorporated 

into the centrifuge 

design. 


are designed for continuous 

operation and do not need to 

be opened for cleaning. 

FLOTTWEG CENTRIFUGES for 

pharmaceutical, biotechnologi- 

Characteristic features of 

centrifuges to meet hygienic 

requirements are: 

• All welds are ground to meet 

specific sanitary finish standards. 

• All product-contact parts are 

provided with a surface finish 

in accordance with specified 

roughness values. 


cal and food processing applications 

are designed with 

Clean-in-Place (CiP) systems. 

Cleaning of Centrifuges for 

Standard Applications 

For the majority of applications 

(e.g. sludges, separation of 

crystalline products), it is sufficient 

to flush the centrifuge 

before shutdown through the 

feed pipe to remove deposits 

of solids. The flushing time and 

the type of cleaning fluid are 

• Rinsing nozzles are provided 

for the centrifuge housing 

and for the interior of the 

scroll body. 

• The centrate impeller is adjustable 

to facilitate flushing 

of the bowl. 

• Frequency-controlled drives 

for CIP-cleaning at low speed. 

• Electropolished scroll, housing 

and bowl surfaces. 

product-dependent. In most 

cases, the use of a solids-free 

centrate will be adequate. 

Additional rinsing nozzles for 

cleaning the housing, the bowl 

exterior and the scroll interior 

can be installed if required. 

Cleaning of Centrifuges for 

Pharmaceutical, Biotechnical 

and Food Processing 

Applications 

FLOTTWEG designs its centrifuges 

for the pharmaceutical, 

• Special hygienic housing 

seals 

• Electrically reversible scroll 

rotation for enhancing cleaning 

during CIP cleaning. 

biotechnological and food 

processing industries to meet 

the highest demands for cleanliness. 

Requirements and 

specifications for design, 

manufacturing and testing are 

according to specific company 

standards. 

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Drives 

General 

Decanter centrifuges are subject 

to two conflicting basic 

drive requirements. On one 

hand, the entire rotor has to 

run at high speed, and on the 

other hand, the scroll inside the 

bowl has to rotate at a very low 

differential speed and simultaneously 

at a high torque relative 

to the bowl wall. 

FLOTTWEG frequency controlled 

electric motors or 

speed-adjustable hydraulic 

motors offer infinitely variable 

speed. Long start-up times 

help overcome a high inertia 

moment and avoid peak loads 

during the initial current phase. 

FLOTTWEG offers hydraulic 

motors or gear drives to drive 

the scroll depending on the 

application. The majority of the 

drive configurations offer variable 

differential speeds. This 

ensures optimum adjustment 

to meet individual customer 

requirements. 

Fully hydraulic drive Hybrid drive Frequency inverter drive (VFD) 

Fully hydraulic drive 

The bowl and the scroll are 

driven by separate hydraulic 

motors. A compact hydraulic 

aggregate with two variable 

pumps feeds two separate oil 

circuits. The volume flow of the 

oil determines the bowl speed 

and the differential speed of 

the scroll, whereas the oil supply 

pressure is directly proportional 

to the torque output and 

thus to the load. This drive per- 

mits the use of variably adjustable 

control, monitoring 

and analog control. The drive’s 

design enables independent 

rotation of the scroll even when 

the bowl is shut down. 

Hybrid drive 

In this version, a frequencycontrolled 

electric motor drives 

the bowl instead of a hydraulic 

motor. The hydraulic aggregate 

for the scroll is compact 

because only one oil circuit is 

required. Control and adjustment 

are the same as with the 

hydraulic drive. Hydraulic 

drives offer particular advantages 

for applications in mobile 

processing systems. Their 

compact design (controls, aggregate) 

provides for optimal 

utilization of floor space. Another 

advantage is applicability 

in explosion proof areas.

Gear drive with frequency 

inverter 

A frequency-controlled electric 

motor drives the bowl via a 

V-belt drive. A second parallel 

V-belt drive with a slightly different 

transmission ratio powers 

a cycloid planetary gear 

and generates the differential 

speed of the scroll. The differential 

speed can be changed 

and adjusted by changing 

V-belt pulleys. 

Backdrive with Dual-VFD SIMP-DRIVE ® 

SIMP-DRIVE ® 

The SIMP-DRIVE ® constitutes 

the new generation of the 

FLOTTWEG’s dual frequency 

inverter back drive concept. 

This new electric drive arrangement 

includes the advantages 

of the hydraulic and electromechanical 

drives. The main 

feature of this new concept is 

a multi-stage planetary gear 

which allows for entirely independent 

operation and drive of 

The FLOTTWEG gear drive is 

the most basic drive solution 

and is particularly suited for 

separation processes which do 

not require operating adjustment 

of the differential speed. 

Backdrive with Dual-VFD 

This solution is derived from 

the FLOTTWEG gear drive with 

the scroll drive having its own 

frequency-controlled motor. 

The differential speed can be 

the bowl and scroll (similar to 

a hydraulic drive) 

Benefits include: 

• High efficiency and low 

energy demand 

• A simple drive system not 

requiring linkage 

• Independent frequency 

inverters (VFDs) which are 

standard designs, simple 

to operate and simple to 

maintain 

separately adjusted with a preset 

range and controlled and 

monitored independently of 

torque. Both drive motors are 

powered by a FLOTTWEG frequency 

inverter, which is power-linked 

via a regenerative circuit. 

This drive is best suited 

for high differential speeds. 

Bowl drive 

Scroll drive 


• Constant torque, high solids 

• Simple integration into 

process control systems 

• Smallest possible inverter 

size 

• High flexibility in the selection 

of the operating speed 

• Discharge of the bowl even at 

full stop 

• Applicable for small to medium 

differential speeds 

• Low power draw. 

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Process control system 

Centrifuge controls 

Fluctuations of the solid 

throughput and concentration 

in the centrifuge may cause a 

decrease in separation results, 

blockage or an overload of the 

centrifuge. To avoid problems 

and to fully utilize the capacity 

of the centrifuge, the differential 

speed needs to be continuously 

adjusted for operating 

conditions. 

FLOTTWEG offers control systems 

for the differential speed 

which are based on the following 

principle. Scroll torque is a 

measure of bowl solids load. 

Load and torque should be 

kept at an optimum value. 

If the torque exceeds the optimum 

value, the FLOTTWEG 

control system increases the 

differential speed to convey the 

solid faster out of the bowl until 

the torque decreases. Conversely, 

the differential speed is 

reduced when the torque de- 

creases. This automatic control 

process ensures optimum separation 

during normal operation. 

An integrated two-stage 

overload protection offers excellent 

control of the machine 

resulting from process deviations. 

If the increase in differential 

speed is not sufficient to compensate 

for a solids overload, 

the feed supply is stopped until 

the torque falls back below set

point. In the majority of situations, 

this is sufficient to remedy 

the overload without having 

to shutdown the system. If this 

measure is insufficient to keep 

the scroll torque from rising, 

the bowl drive is shut down 

when the torque reaches the 

second set point. 

As the bowl speed decreases, 

the torque is reduced and the 

machine will usually empty 

itself. Typically there is no need 

PLC decanter controller 

for manually removing the 

solids. Machines with hydraulic 

drive or SIMP-DRIVE ® enable 

solids discharge at full-torque 

scroll operation during the 

bowl shut down. 

FLOTTWEG provides all machines 

with adjustable differential 

speeds (hydraulic drives, 

dual VFDs and SIMP-DRIVE ® 

drives) with this control system. 

The range of control systems 

covers a basic version 

with a hydraulic-mechanical 

analog control via an electronic 

industrial control system to 

programmable logic controllers 

(PLC) and integration into distributive 

control systems (DCS). 

All electronic systems allow for 

remote control and monitoring. 

Programmable controls support 

a variety of complex links 

and monitoring for plant 

systems (e.g. CIP and automated 

process steps). 

® = registered trademark 

in various countries 

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Sealing systems 

Most sizes and models of 


are available in a variety of 

rotor and housing seal designs 

for the following operating 

conditions: 

• atmospheric 

• vapor-tight 

• gas-tight 


can also be adapted for operating 

in closed-loop systems. 

Atmospheric centrifuges are 

the standard version. They are 

used for applications where 

there is no harm from products 

or vapors released to the environment 

and where it is not 

necessary to isolate the centrifuge 

bowl from the surrounding 

atmosphere. 

Vapor-tight versions of 

FLOTTWEG centrifuges are 

the right choice in cases where 

substances emitted from the 

Atmospheric Vapor-tight Gas-tight 

Gas-tight centrifuges allow 

the safe operation with toxic, 

corrosive or flammable media 

by applying inert purge gas to 

rotor seals and by inertizing the 

process chamber and centrifuge 

housing. Slight positive 

or negative pressures can be 

maintained in the process area 

by regulating the purge gas 

supply. Special sealing elements 

minimize the seal gas 

consumption. 

process could pollute the environment 

or if contact of the 

product with ambient air is undesirable. 

Additional seals on 

rotor shafts and housing provide 

the necessary seal. Emissions 

can be eliminated when 

purge gas/air is applied to 

seals or the centrifuge housing 

is vented.

Purging with inert gas 

Processing of hazardous 

materials 

Processes with any risk of 

explosion must be controlled 

by using inert gas. Generally, 

nitrogen is used. Centrifuges 

and system parts used for the 

processing of hazardous materials 

have to be gastight to prevent 

the exit of vapors into the 

atmosphere as well as to avoid 

the entry of air into the system. 

Typical examples are processes 

in the chemical, petroleum, 

Rotor 

Seal 

Housing 

Control of centrifuges 

purged with inert gas is 

based on differential pressure 

monitoring. 

Differential pressure monitoring 

maintains a fixed constant 

overpressure in the sealing 

system using control valves. 

This ensures a small overpressure 

within the sealing system 

and the inside of the centrifuge 

guaranteeing protection 

against air leakage into the 

and pharmaceutical industry, 

processes with flammable 

organic solvents or oil sludge 

treatment processes. These 

centrifuges comply with 

ATEX 95 in Zone 1, up to 

temperature class T4. 

Purging 

Before starting, the entire system 

including the centrifuge is 

purged. For this purpose, large 

volumes of inert gas are flushed 

through the system until the 

system and product emission 

into the atmosphere. 

Processing of materials 

susceptible to oxidation 

Often the processing of beverages 

and food requires that 

products be prevented from 

undergoing oxidation. For this 

purpose the leakage of air into 

the centrifuge is prevented by 

corresponding constructive 

measures and positive inert 

oxygen is reduced below critical 

level with the inert gas. 

Purging is complete if a multiple 

of the system volume has 

passed through the machine or 

if an oxygen probe at the centrifuge 

housing shows a safe 

oxygen concentration. 

Continuous inert gas supply 

After successful purging and 

during the operation with product, 

sufficient inert gas is fed 

into the system to ensure a 

FLOTTWEG purge gas control unit 

gas pressures are maintained 

at the centrifuge. In many 

cases, carbon dioxide is used 

as the inert gas. A system 

monitoring the flow of gas is 

typically used. 

small overpressure. This prevents 

atmospheric air from 

penetrating into the system. 

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Lubrication 


can be provided with different 

lubrication systems. The lubrication 

system depends on the 

type of operation, for example, 

batch or continuous operation 

and the degree of automation 

of the entire system. 

Central lubrication system 

All main lubrication points are 

permanently manifolded via 

tubing or hoses to a central 

pump. The lubricant is dis- 

Central lubrication system 

(manually operated) 

be automatically activated. 

This ensures the uniform and 

reliable lubrication of the centrifuge. 

It prevents bearings 

from being under- or over-lubricated 

and rules out short-term 

spikes in bearing temperatures 

and excessive grease consumption. 

The grease pump is 

automatically controlled. 

For many applications, an airoperated 

oil droplet lubrication 

system is supplied. 

pensed proportionally through 

a special piston distributor. The 

scroll bearings are permanently 

sealed and lubricated, but can 

also be re-greased manually. 

Automatic grease lubrication 

Automatic oil droplet 

lubrication system 

The fully automatic oil-air lubrication 

system ensures optimal 

lubrication with oil droplets 

transported via air to the bearings. 

Optimum lubrication is 

achieved at high speeds, with 

low oil consumption and no 

loss in performance. Monitoring 

of the oil and air pressure 

guarantees high operational 

safety. Pneumatic designs are 

Automatic grease 

lubrication 

In contrast to the manual 

central lubrication system, 

the greasing system can 

Oil droplet lubrication system 

available for utilization in 

explosion-proof areas. 

They are suited for Zone 1 up to 

temperature class T4 according 

to ATEX 95. This system does 

not require oil recirculation or 

treatment.

Wear protection 

FLOTTWEG offers a wide 

range of wear protection to 

meet the requirements of the 

many different applications in 

which centrifuges are installed: 

Illustration of replaceable wear protection elements 

[1] Welded hard facing or spray 

coating 

[2] Ceramic 

[3] Tungsten carbide tiles, 

brazed or bolted 

[4] Chill castings 

[5] Plastic liners 

In order to minimize maintenance 

costs for applications 

involving highly abrasive products, 

all wear protection elements, 

except welded hard 

facings or spray coatings, are 

field-replaceable. 

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Centrifuge monitoring 

Vibration monitoring 

(standard) 

Vibration sensors transmit acceleration 

signals to an analyzer 

that sounds an alarm or trips 

the centrifuge upon reaching 

the full limit value. 

Temperature Monitoring 

(optional) 

Bearing temperatures are constantly 

remote-monitored in 

Flottweg centrifuges by means 

of resistance thermometers. 

Upon exceeding pre-set 

Shock Pulse Measurement 

(SPM) (optional) 

The roller bearings in the centrifuge 

are monitored continuously 

using an SPM system. 

Shock-impulse sensors are 

installed at each bearing and 

connected to a central alarm. 

temperature limits, the centrifuge 

alarms or shuts down. 

This preventive measure safeguards 

against bearing failure 

or machine damage. 

Pressure waves (stock impulses) 

emitted by damaged or worn 

bearings are picked up by the 

sensor and converted into an 

electrical signal An alarm is 

triggered if the signals from the 

sensor exceed a set limit more 

than once every 10 seconds.

Customer service 

Customer service is our 

strength 

Application-based project 

planning, high-quality manufacturing 

and professional 

after-sales service are prerequisites 

for customer satisfaction. 

Experienced and reliable 

service engineers from our 

customer service department 

are ready to respond quickly 

to reduce down time. The 

FLOTTWEG service group is 

also available to perform 

The Flottweg mobile test units. 

Service on call 365 days a year. 

preventive maintenance. 

FLOTTWEG services 

include: 

• Competent advice on 

separation processes 

• Pilot tests on-site or at the 

Flottweg laboratory and test 

center 

• Selection and specification 

of equipment 

• Customer-tailored automation/control 

systems and 

process integration 

• Design and construction of 

complete process systems 

• Installation, commissioning, 

maintenance, repair and 

spare parts service worldwide. 

FLOTTWEG products are 

designed and manufactured 

in GERMANY! 

Service hotline 

ISO certification 

FLOTTWEG is ISO 9001 

certified and manufactures its 

products in compliance with 

all current technical standards. 

Telephone 

+49 / 8741 301-321 

+49 / 180 5035135 

Telefax 

+49 / 8741 301-404 

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DECANTER 

Solid bowl centrifuges 

Product lines and models 

Z23-3 

Z23-4 

Z32-3 

Z32-4 

Z4E-3 

Z4E-4 

Z5E-4 

Z6E-2 

Z6E-3 

Z6E-4 

Z73-4 

Z92-3 

Z92-4 

Centrifugal force x g* 

4630 

3890 

4470 

3620 

4150 

4150 

3620 

3550 

3550 

3550 

3170 

2600 

2600 

* dependent on temperature 

and density of the slurry

TRICANTER ® 

SORTICANTER ® 

SEDICANTER ® 

PRODECANTER ® 


Z23-3 

Z23-4 

Z32-3 

Z4E-3 

Z4E-4 

Z6E-3 

Z6E-4 

K4D-4 

K6E-4 

1680 

K6EF-4 2160 

S3E 

S4E 

S6E 

Centrifugal force x g* 

4630 

3890 

4470 

Z32-4 3620 

Z5E-4 

4150 

4150 

3620 

3550 

3550 

2880 

10000 

6500 

5000 

* dependent on temperature 

and density of the slurry 

23

Representative: 

FLOTTWEG subsidiaries around the world 

Australia 

Flottweg Australian 

Representative Office 

90 A Pacific Highway 

Roseville, NSW 2069 Sydney 

AUSTRALIA 

Telephone +61/2-94102255 

Telefax +61/2-94101466 

flottwegsydney@ozemail.com.au 

China 

Flottweg Separation Technology 

(Shanghai) Co. Ltd. 

No. 516, Chunzhong Road 

Xinzhuang Industrial Zone 

Shanghai 201108 

P. R. CHINA 

Telephone +86/21-544 20775 

Telefax +86/21-544 21653 

flottweg@online.sh.cn 

CIS/Russia 

Flottweg AG 

Kutusowskij Prospekt 

7/4 korpus 1, Office 192-193 

121248 Moskau 

CIS/RUSSIA 

Telephone +7/095 9748 128 

Telefax +7/095 9748 129 

flottweg.moskau@flottweg.com 

France 

Flottweg France SAS 

Technoparc-Espace Media 

3 rue Gustave Eiffel 

78306 Poissy Cedex 

FRANCE 

Telephone +33/1-3922-4044 

Telefax +33/1-3922-6453 

france@flottweg.fr 

Germany 

Flottweg AG 

Vertriebs- und Service-Center 

Büro Nord-Ost 

Handelsplatz 2 

04319 Leipzig 

GERMANY 

Telephone +49/341 86898-0 

Telefax +49/341 86898-40 

leipzig@flottweg.com 

Flottweg AG 

Vertriebs- und Service-Center 

Büro Nord-West 

Rösrather Straße 265 

51107 Köln 

GERMANY 

Telephone +49/221 299917-20 

Telefax +49/221 299917-30 

koeln@flottweg.com 

Italy 

Veronesi Separatori SPA 

Via Don Minzoni, 1 

40050 Villanova di Castenaso 

Bologna 

ITALY 

Telephone +39/051 6054511 

Telefax +39/051 6053183 

info@veronesi.separatori.com 

Mexico 

Flottweg Mexico S.A. de C.V. 

German Centre Office N° 6-4-14, 

Av. Santa Fe 170 

Col. Lomas de Santa Fe 

01210 Mexico, D.F. 

MEXICO 

Telephone +52/55-9172 9310 

Telefax +52/55-9172 9311 

juan.gaviria@flottweg.com 

Poland 

Flottweg Polska 

ul. Pelplinska 8b 

01-683 Warszawa 

POLAND 

Telephone +48/22-732 2230 

Telefax +48/22-751 4791 

FlottwegPoland@flottweg.com 

USA/Kanada 

Flottweg Separation Technology, Inc. 

10700 Toebben Drive 

Independence, KY41051 

USA 

Telephone +1/859 448-2300 

Telefax +1/859 448-2333 

sales@flottweg.net 

For more than 50 FLOTTWEG 

representatives worldwide see 

our homepage: 

http://www.flottweg.com/ 

contact/service/addresses 

PR – 0004 I – 10 5 05 / 09

INNOVATIVE SOLID BOWL CENTRIFUGE TECHNOLOGY

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