Westfalia Separator® SeaWaterDistiller

Technical Data | SWD 10 / 15 / 20 / 25 / 30

GEA Mechanical Equipment / GEA Westfalia Separator

Liquids to Value
Operating Principles and Constructional Features

The SWD (Westfalia Separator® SeaWaterDistiller) is working on the well known 

vacuum distillation principle. Waste heat 

from the main engine on board is utilized 

as heating medium for evaporation. The 

evaporation takes place in the evaporation 

plate bundle located in the lower part of 

the housing.

A part of the incoming sea water evaporates 

due to the high vacuum inside the housing. The generated vapour is cleaned from 

sea water droplets while flowing through 

a wire mesh demister. The condensation 

takes place in the condenser plate bundle 

located in the upper part of the housing. 

The condenser is cooled by sea water. 

The latent heat from condensation is transferred to the sea water. The condensation/

evaporation temperature varies with the 

sea water temperature.

A small portion of the heated sea water is 

utilized as feed water for the evaporator 

bundle. The biggest part is used as driving medium for the combined air- / brine 

Thermal oil /

hot water heated

Heat exchanger

Jacket water

Circulation pump

Steam heated

Steam

Steam ejector

Condensate

Sea water

Distillate

Heating water

Jacket water heated

Feed water

Brine

Demister

Ejector

Over board

ejector. This ejector has a double function: Extraction of the surplus sea water 

(so-called brine) out of the housing and 

vacuum creation by exhaust of the noncondensable gases.

The distillate quality (salinity) is monitored at the control panel. If the salinity 

exceeds the adjusted set point (2 – 10 ppm) 

the distillate is rejected back to the 

evaporator via a solenoid valve.

2

GEA Westfalia Separator
Features

Simple, compact design

Distillate pump, control panel,

chemical dosing equipment

Titanium heat exchanger plates

Sea water resistant materials

Hinged hood

Optional supply

Sea water pump 

(necessary for operation)

Re-hardening filter (pH-adjustment)

UV-Sterilizer

Heating modules for various 

heat sources e.g.

Steam

Hot water

Thermal oil

Standard equipment

Control panel 

(built in on left or right side)

Chemical dosing tank (built in)

Distillate pump

Set of thermometers 

and pressure gauges

Set of non-return flaps

Feed water valve

Solenoid valve

Water meter

Salinity measuring cell + indicator

Materials

Plates Titanium

Demister Stainless steel

Housing Stainless steel

Air-/brine ejector Cast bronze

Frame Stainless steel

Distillate pump Stainless steel

Sea water pipe work PP

Brine pipe work PP

Distillate Hose

Sea water inlet

Heating water

inlet

Distillate outlet

Sea water outlet

Heating water

outlet

3

GEA Westfalia Separator
Technical Data 

Westfalia Separator® SeaWaterDistiller

Function 

Generation of fresh water from sea water

Application

Shipbuilding industry

Offshore

D

E

A

C

B

Werner-Habig-Straße 1 · 59302 Oelde (Germany)

Phone +49 2522 77-0 · Fax +49 2522 77-1778

www.westfalia-separator.com

GEA Mechanical Equipment

GEA Westfalia Separator

The information contained in this brochure merely serves as a non-binding description of our products and is without guarantee. Binding information, in particular relating to capacity data and suitability for specific applications, can only be provided within the framework of concrete inquiries. Westfalia® and Westfalia Separator® are registered trademarks of GEA Westfalia Separator GmbH. Printed on chlorine-free bleached paper · Printed in Germany · Subject to modification · www.kabutz.de 9997-1351-020/0810 EN

Westfalia Separator®

SeaWaterDistiller SWD 10 SWD 15 SWD 20 SWD 25 SWD 30

Capacity 10 t/d 15 t/d 20 t/d 25 t/d 30 t/d

Heating water temperature 70–90°C

Connections

Sea water inlet 65 DN

Sea water outlet 65 DN 80 DN 80 DN 100 DN 100 DN

Heating water inlet 65 DN

Heating water outlet 65 DN

Distillate G3⁄4''

Weight

Empty 600 kg 617 kg 626 kg 642 kg 651 kg

In Operation 640 kg 676 kg 706 kg 742 kg 771 kg

Dimensions

A 1358 mm 1358 mm 1358 mm 1637 mm 1637 mm

B 1390 mm

C 1423 mm

D (*) 2020 mm

E (*) 477 mm
AQUA

Titanium-plate freshwater generator

The AQUA freshwater generator

The AQUA freshwater generator is a major advance based 

on proven Alfa Laval expertise. AQUA’s optimized process 

cuts seawater needs in half, which minimizes pipework and 

allows the installation of smaller seawater pumps. This in 

turn reduces installation costs, fuel consumption and CO2

emissions. 

AQUA makes use of 3­in­1 plate technology, which enables 

desalination in a single plate pack with one type of titanium 

plate. Since the plate pack also contains the process 

 vacuum, AQUA has no outer shell and is smaller than other 

freshwater generators. The plate pack slides open for easy 

access to the interior without an additional service area.

The use of corrosion­ and erosion­resistant titanium, combined with an optimized process that inhibits natural scaling, 

ensures that AQUA needs little maintenance. The system has 

been fully tested both on and off shore, and is designed to 

last the lifetime of the ship.

Application

AQUA uses vacuum distillation to convert seawater into highquality fresh water for domestic and process utilization. By 

providing a constant supply of low­salinity water and continuously controlling the water quality, it eliminates the need for 

bunker water.

AQUA is designed for automatic operation in periodically 

unmanned engine rooms and other automated operations. 

It is suitable for installation on ships and rigs, as well as in 

remote onshore locations. 

Jacket water, steam injection or a Hot Water Loop can all be 

used as heating media.
Features and benefits

• Half the seawater flow.

AQUA requires only half the seawater 

needed by other freshwater generators, 

which means smaller seawater pumps 

can be used. Optimized distribution 

prevents dry spots and inhibits the 

 natural scaling process.

• Lower costs and emissions.

The reduction in seawater pumping 

needs has a corresponding effect on 

the consumption of electrical energy. 

Less fuel has to be burned, which 

reduces both operating costs and

CO2

 emissions.

• 3-in-1 plate technology.

AQUA incorporates the evaporation, 

separation and condensation processes into a single type of titanium plate. 

Desalination is handled within a single 

plate pack that also contains the process vacuum. No outer shell is 

 necessary.

• Simple, compact installation.

With no outer shell and no additional 

service area, AQUA has a minimal 

weight and footprint. Assembly can be 

handled on site and installation is simplified by the ability to use smaller seawater pumps and pipes. Since AQUA 

is not sensitive to roll and pitch, it can 

also be installed in any direction.

• Easy operation and maintenance. 

AQUA offers start­and­forget operation, 

which saves time for the crew. 

Maintenance intervals are long and the 

plate pack slides open for easy access 

to the interior. 

• Proven technology.

AQUA has been thoroughly tested in 

full scale, both in Alfa Laval’s thermal 

laboratory and onboard vessels at sea. 

Roll and pitch tests have been performed to ensure that AQUA can be 

installed in any direction.

• Long product lifetime. 

High­grade materials that resist corrosion and erosion, including titanium for 

the plates and other wetted parts, 

ensure that AQUA will last as long as 

the ship.

• Low-salinity water.

The fresh water supplied by AQUA has 

a lower content of salt and other dissolved solids than that supplied by 

other freshwater generators. It can be 

used directly by the steam boilers.

• Continuous quality control.

AQUA’s salinometer­equipped control 

system continuously monitors the 

 quality of the outgoing fresh water.

Basic equipment

The AQUA freshwater generator consists of a single plate pack containing a 

flexible number of titanium process 

plates. These plates are suspended 

within a frame, which comprises a carrying bar, frame plate and pressure 

plate. Evaporation, separation and condensation all occur within the same 

plate pack.

Among the plate pack features are 

gaskets with rubber flaps that indicate 

correct plate assembly, as well as distance pipes that ensure proper plate 

alignment and correct tightening.

Connected to the plate pack is a combined system for feed water, condenser cooling water and ejector water. The 

freshwater system consists of a freshwater pump and a freshwater control 

sensor that ensures a stable outgoing 

flow.

Build­on 

control panel Support 

column

Carrying 

bar

Pressure 

plate

Plate 

pack

Distance 

pipe

Tightening 

bolts

Ejector

Freshwater 

pump with 

electric motor

Freshwater

outlet

Frame plate

Additional equipment

•	Combined	cooling	and	ejector	water	

pump with electric motor

•	Control	panel	with	motor	starters	and	

salinometer

•	Anti-scale	chemical	dosing	unit	for	

feed water 

Optional equipment

•	Steam	heating	system	with	direct	

steam injection

•	Equipment	for	steam	boosting	and	

hot water loop system

•	Extended	control	panel	with	motor	

starters and salinometer

•	Freshwater	pH	adjustment	equipment

•	Freshwater	disinfection	equipment

•	Connections	according	to	DIN,	JIS	

and ANSI standards

•	Cleaning-in-Place	(CIP)	unit
4

1

6

6

7

8

1

3

5 

2 

1

 Seawater feed

2

 Heating

medium in

3

Heating

medium out

4

 Seawater

cooling in

5

 Seawater

cooling out

6

 Evaporated

steam

7

Freshwater out

8

 Brine out

Green

 Condensation

Grey

Separation

Red

Evaporation

Operating principle

AQUA’s flow of feed water is taken 

from the flow of seawater coolant. 

Feed	water	enters	the	lower	(evaporator)	section	of	the	plate	pack,	in	which	

the plates are warmed by the heating 

medium. Here the water is evaporated 

at around 40­60°C in a vacuum of 

85­95%, which is maintained by the 

brine/air ejector.

The vapour produced rises between 

the	plates	into	the	middle	(separator)	

section of the plate pack, where any 

droplets of entrained seawater are 

removed. Gravity causes these droplets to fall back into the brine sump at 

the bottom of the freshwater generator.

Only clean freshwater vapour reaches 

the	top	(condenser)	section	of	the	plate	

pack, which is cooled by a flow of seawater. Here the vapour is condensed 

into fresh water, which is pumped out 

of the freshwater generator by the 

freshwater pump.

Evaporation, separation and cooling in the AQUA freshwater generator.

Installation

AQUA is easily installed on ships and 

rigs, as well as in remote onshore locations. Since there is no need for an 

extra service area, the installation is 

highly compact. All maintenance areas 

can be accessed from within the AQUA 

footprint	(see	green	diagram).

The heating medium is either engine 

jacket cooling water or a closed circuit 

heated by steam. 

An ejector pump supplies seawater 

coolant for the condenser, feed water 

for evaporation and water for the combined brine/air ejector. This pump is 

separately installed and connected to 

its own seawater intake. 

The fresh water produced is pumped 

into the storage tank by a built­in freshwater pump.

A control panel, which incorporates 

motor starters and a salinometer, supplies electrical power to the ejector and 

freshwater pumps, as well as control 

voltage to the salinometer and dump 

valve.

Dark green = Equipment

Light green = Footprint

Brine overboard

Heating medium out

Seawater in

Fresh water to tank

Heating

medium in

Process plate

Utility plate
How to contact Alfa Laval

Contact details for all countries are 

continually updated on our web site.

Please visit www.alfalaval.com/marine

to access the information direct.

EMD00158EN 0809

AQUA is a trademark owned and registerered and owned by Alfa Laval Corporate AB.

Alfa Laval is a trademark registered and owned by Alfa Laval Corporate AB.

Alfa Laval reserves the right to change specifications without prior notification.

Capacity range

The AQUA series covers a capacity range from 3.1 to 60 m3

/24 h, depending on 

the heating medium and cooling water temperatures. An AQUA freshwater generator can be dimensioned to suit any jacket water temperature from 55-95°C at any 

cooling water temperature.

Operations

•	AQUA is designed for easy maintenance. If Alfa Laval recommendations 

are followed, only a few service 

inspections are needed.

•	Connections for Cleaning-in-Place

(CIP) are available.

• Standard spare part kits are

available.

•	The Installation Manual provides

detailed information regarding correct 

installation in electronic or printed 

format:

- System description

- Installation

- Technical data and drawings

•	The System Manual provides detailed

information regarding operation and 

maintenance in electronic or printed 

format:

- System description

- Operating instructions

- Chemical dosing of anti-scaling 

chemicals

- Troubleshooting

- Maintenance of major components

- Spare parts drawings

- Technical data and drawings

•	Commissioning and technical services are available from all Alfa Laval 

offices, including installation assistance and advice on operation and 

maintenance.

•	Training in all aspects of freshwater

generation can be provided by Alfa 

Laval service engineers.

•	Spares and maintenance can be

provided by Alfa Laval Service 

Centres. Details are available from 

local Alfa Laval offices.

0

Freshwater capacity in m3

/24 h

AQUA 65

AQUA-80

AQUA-100

AQUA-125

5 10 15 20 25 30 35 40 45 50 55 60 65 70

90°C

90°C

90°C

90°C

85°C

85°C

85°C

85°C

80°C

80°C

80°C

80°C

75°C

75°C

75°C

75°C

70°C

70°C

70°C

70°C

Capacities at different heating medium temperatures and nominal flow for a minimum and maximum number 

of plates at 32°C seawater temperature.

AQUA dimensions

Size L W H Weight

mm in mm in mm in kg lbs

AQUA-65 1160 45.7 850 33.5 1385 54.5 700 1543

AQUA-80 1365 53.7 850 33.5 1385 54.5 760 1676

AQUA-100 1765 69.5 850 33.5 1385 54.5 820 1808

AQUA-125 2165 85.2 850 33.5 1385 54.5 910 2006

Technical data

Main supply voltage 3-phase, 220 V up to 690 V

Control voltage 1-phase, 100/110/115/230 V

Frequency 50 or 60 Hz
standard features :

– Staged starting of motors

– Timed start-up (Prime, Init, Run)

– TDS monitoring of product water

– Automatic diverting of water

above 500 PPM

– Programmable Fresh Water Flush for automatic 

and weekly operation; or, convenient one-touch button 

for manual operation 

– Overpressure protection (HP fault)

– Loss of Prime/Fouled Filter detection (LP fault)

features with remote display :

– Remote system control up to 150’ away

– Readout of product TDS

– Automatic tank level controls

– Programmable times/set points and 

display settings

optional equipment/accessories:

– Filter Replacement Kit

– Pocket PPM Meter

– Ultra-Violet Sterilizer

30"

14.75"

17"

21.5"

21.5" 24.5"

framed series

250—1800 gpd

The Aquamiser Plus Series offers programmable settings and remote display capability through an advanced

control system. This full-featured affordable solution is ideal for smaller water production needs. With outputs

of 250–1800 GPD the Aquamiser Plus Series will provide the safety and controls needed to operate both

dependably and efficiently. The Aquamiser Plus is available in framed and modular configurations to be utilized

in tight spaces and bulkheads. However, despite its small size, the expansive controls include a fully automatic

Fresh Water Flush System for unattended maintenance. Scheduled flushes, once a week or every two weeks, will

help maintain and keep your watermaker fresh and ready for your next voyage. 

Model A516S Shown

remote display

Allows you to monitor critical conditions of

operation and execute fresh water flushes.

model

A216S

A516S

A616S

A816S

A1226S

A1826S

gpd/lpd

250/946

500/1892

600/2270

800/3027

1200/4541

1800/6811

hp

1.5

1.5

1.5

1.5

2.5

2.5

kw

1.52

1.52

1.52

1.52

2.29

2.29

voltage

120/220, 50/60 Hz

120/220, 50/60 Hz

120/220, 50/60 Hz

120/220, 50/60 Hz

120/220, 50/60 Hz

120/220, 50/60 Hz

gph/lph

10/39

21/79

25/95

33/126

50/189

75/284

NOTE: Specifications based on 25oC; 32,500 TDS Feed; and, 820psi at 60 hertz

FCI Watermakers | Santa Ana, CA 92707 | T 714.850.0123 F 714.850.0955 | www.fciwatermakers.com

50 Hz operation will affect system performance

Contact factory for other voltages.
additional displays

Allow you to monitor, access and program

the system from a remote location.

9"

7"

15.5"

11"

7"

21.5"

19"

6"

11"

12.5"

6"

10"

10.75"

10"

24"

4"

12"

47.5"

6.75"

5"

9.5" LOW PRESSURE PUMP PRE-FILTER ASSEMBLY FRESH WATER FLUSH HIGH PRESSURE PUMP 2.5” PV ASSEMBLY

DISPLAY PANEL

MASTER FLOW CONTROL PANEL

features :

– State-of-the-art engineering and 

electronics, UROC—Universal R/O Controller

with computer interface and multiple remote

station capability

– RS-485 connection for display 

and monitoring up to 4000 ft. away 

– 316SS low-pressure pump with 

closed impeller design

– Programmable Fresh Water Flush 

with recurring automatic flush feature

– Digitally monitors water pressure and flow

– Quiet, efficient operation

– Commercial sized pre-filtration

– Conservatively rated to insure 

performance under varying conditions

– 316SS high-pressure pump and fittings

– Pressure vessels with 316SS product 

and pressure ports, stress-eliminating 

engineering with LIFETIME WARRANTY

– Washdown duty motors 

(epoxy coated, neoprene gaskets)

– User-friendly with ergonomic

design for ease of use

– 4-point vibration isolation mounts 

for quiet operation

– 2-year product warranty

optional equipment/

accessories:

– Digital Remote / Monitoring Station

– Filter Replacement Kit

– Ultra-Violet Sterilizer

– Media / Iron Removal Filters

– Granular-Activated Charcoal Filters

modular series

600—1800 gpd

The Max-Q Series is among the most advanced watermakers ever manufactured. Can customize your watermaking

needs by utilizing FCI’s exclusive UROC technology from a remote location or a personal computer. Both framed

and modular configurations produce fresh, clean water with outputs of 600–1800 GPD. Because each component

is tested and chosen for its ability to withstand long-term operation, every Max-Q is engineered and designed

to operate in the harshest of marine environments. We have also eliminated the need for pressure gauges and

flow meters to provide years of dependable service and worry-free operation. Max-Q—The future of watermaking.

Model MQM1826S Shown

model

MQM626S

MQM1226S

MQM1826S

gpd/lpd

600/2270

1200/4541

1800/6811

hp

2.5

2.5

2.5

kw

2.29

2.29

2.29

voltage

120/220/380, 1-ph, 3-ph, 50/60 Hz

120/220/380, 1-ph, 3-ph, 50/60 Hz

120/220/380, 1-ph, 3-ph, 50/60 Hz

gph/lph

25/95

50/189

75/284

NOTE: Specifications based on 25oC; 32,500 TDS Feed; and, 820psi at 60 hertz 50 Hz operation will affect system performance

Contact factory for other voltages.

FCI Watermakers | Santa Ana, CA 92707 | T 714.850.0123 F 714.850.0955 | www.fciwatermakers.com
FCI Watermakers | Santa Ana, CA 92707 | T 714.850.0123 F 714.850.0955 | www.fciwatermakers.com 11"

8"

16"

19.5"

12"

21"

13.5"

9"

15"

15.8"

18.4"

33.1"

4"

18"

47.5"

7.5"

6"

30"

51"

LOW PRESSURE PUMP PRE-FILTER ASSEMBLY FRESH WATER FLUSH HIGH PRESSURE PUMP 2.5” PV ASSEMBLY 4” PV ASSEMBLY

features :

– Four customizable configurations: 

Vertical Framed, Horizontal Framed, 

Wall-Mount and Modular units

– State-of-the-art engineering 

– UROC—Universal Reverse Osmosis Controller

with computer interface and multiple 

station capability

– 316SS low-pressure pump with closed 

impeller design (allows for 50% more

pressure with the same HP)

– 316SS high-pressure pump

– 80 sq. ft. of commercial pre-filtration

– Programmable Fresh Water Flush 

with recurring automatic flush feature

– Commercially designed 

to operate 24/7 

– Pressure vessels with 316SS 

pressure and product ports, 

stress-eliminating engineering

– Conservatively rated to ensure

performance under varying conditions

– Built-in cleaning ports

– Washdown duty motors 

(epoxy coated, neoprene gaskets)

– 4-point vibration isolation mounts

– One year warranty

optional equipment/

accessories:

– Digital Remote / Monitoring Station

– Filter Replacement and Spare Parts Kits

– Ultra-Violet Sterilizer

– Media, Iron Removal and 

Granular-Activated Charcoal Filters

– System Soft Start

modular series

1200—5500 gpd

When your needs demand a continuous-duty, commercial grade watermaker and space is limited, the FCI

Neptune Modular Unit delivers great volumes of water with capacities of 1200–5500 GPD. It is ideal for large

yachts, commercial vessels, island homes, oil platforms, hotels or wherever clean, pure, fresh water is needed.

Employing our exclusive UROC technology, it provides advanced total control and user-friendly system 

customization. The commercial features also include built-in cleaning ports, washdown duty motors, 316SS

high and low-pressure pumps and commercial sized pre-filters. The Neptune Series of systems ensure quality,

dependability and years of worry-free operation wherever you may be.

Model NM24263S Shown

model

NM12263S

NM18263S

NM24263S

NM31263S

NM43263S

NM55263S

gpd

1200

1800

2400

3100

4300

5500

M3

5

7

10

13

17

22

hp

3

3

5

7.5

7.5

7.5

kw

3.05

3.05

4.58

6.48

6.48

6.48

voltage

220/380, 3-ph, 50/60 Hz

220/380, 3-ph, 50/60 Hz

220/380, 3-ph, 50/60 Hz

220/380, 3-ph, 50/60 Hz

220/380, 3-ph, 50/60 Hz

220/380, 3-ph, 50/60 Hz

gph/lph

50/189

75/284

100/378

129/489

179/678

229/867

NOTE: Specifications based on 25oC; 35,000 TDS Feed; and, 820psi at 60 hertz Contact factory for other voltages.

14"

11"

30.5" MASTER FLOW CONTROL PANEL

additional displays

Allow you to monitor, access and program

the system from a remote location.
a c c e s s o r i e s

FCI Watermakers carries a complete line of replacement parts, accessories and optionalequipment that maintain the quality, reliability and efficiency that you have come toknow and trust in FCI. So, the next time you perform routine maintenance, or would liketo upgrade your Reverse Osmosis system, look to FCI Watermakers. The World’s Finest. 

Multi-me

remove p

stream. F

stainless 

Additional Displays enable you 

to program and access the system 

from a remote location.

FCI carries a complete line of replacement parts which

include filters, membranes, hoses, fittings, spanners,

o-rings and more.

Stainless Steel, Ultra-Violet Sterilizers provisterilization of bacteria and micro-organism

FCI Watermakers | Santa Ana, CA 92707 | T 714.850.0123 F 714.850.0955 | www.fciwatermakers.com Available in a variety of flow rates.
Dosing 

& Chlorinating Unit

Water han

dling systems The JOWA Group

For many decades now, Jowa has been a 

trusted and reliable supplier of technical 

environmental protection equipment to 

the shipping industry. We can offer every 

conceivable service for installation supervision, 

operation, monitoring and control of Jowa’s 

equipment. You can choose between our own 

personnel or one of our trained representatives 

all over the world.

Sweden

JOWA AB

Tulebovägen 104

S-428 34 Kållered

Sweden

Telephone: +46-31 726 54 00

Telefax: +46-31 795 45 40

website: www.jowa.com

e-mail: info@jowa.se

Norway

JOWA NORGE A/S

Solbergveien 22

3057 Solbergelva

Norway

Telephone: +47-3223 6700

Fax: +47-3223 6701

website: www.jowa.no

e-mail: post@jowa.no

Germany

JOWA GERMANY GMBH

Hansestrasse 21 / Haus 2

18182 Rostock-Bentwisch

Germany

Telephone: +49-381 6302 660

Fax : +49-381 6302 641

website: www.jowa.de

e-mail: info@jowa.de

Netherlands

JOWA HOLLAND

Ebweg 61

2991 LS Barendrecht

Netherlands

Telephone: +31(0)180 55 71 33

Fax : +31(0) 180 61 11 27

website: www.jowa-holland.nl

e-mail: post@jowa-holland.nl

USA

JOWA USA, INC.

59 Porter Road

Littleton, MA 01460

USA

Telephone: +1-978 486 98 00

Fax: +1-978 486 01 70

website: www.jowa-usa.com

e-mail: info@jowa-usa.com 

Singapore

JOWA (S) PTE., LTD.

93 Lorong N Telok Kurau #05-04

Singapore 425244

Singapore

Telephone: +65-6872 8802

Fax: +65-6872 8896

website: www.jowa.sg

e-mail: jowaspdk@singnet.com.sg

China

JOWA (Shanghai) Marine 

Equipment Co.,Ltd.

5111 Luo Shan Road,

Pudong New Area

Shanghai 201204

China

Telephone: +86-21-3390 6889/90/91/92

Fax: +86-21-3390 7550

e-mail: jowasha@jowa.com.cn

China

JOWA (Shaoxing) Enviroment 

Protection Equipment Co.,Ltd.

3# He Hu Road 

Paojiang Industrial Estate

Shaoxing 312071

China

Telephone: +86 575 88179900

Fax: +86 575 88158630

Korea (South)

Jowa Korea Co. Ltd.

1650-6, Song Jung Dong

Gang Seo - Gu

618-819 Busan

South Korea

Telephone: +82-51-831-4911~3

Fax: +82-51-831-4914

website: www.jowakorea.kr

e-mail: info@jowakorea.kr 
Easy Installation and

Operation

The dosing/chlorinating unit is meant to dose 

a chemical into water. The chemicals can be 

chlorine for fresh water systems, corrosion 

inhibitors for main engine cooling water, pH

adjustment of fresh water etc.

The unit consists of a dosing pump, a control cabinet, 

an injection valve and a container for the chemical. The 

container is equipped with a low-level alarm which stops 

the pump in case chemical runs out, a suction valve and 

a manual agitator. All components are mounted on a 

stable steel frame for easy installation.

The most common application is that the dosing unit 

is being used to prechlorinate or pH-adjust fresh water, 

prechlorinate evaporated water or bunker water, on its 

way to fresh water holding tank, and to rechlorinate water 

before it is distributed. The prechlorination systems are 

normally controlled by flow meters in bunker water flow 

line and evaporated water flow line respectively. This 

ensures enough chlorine dosed into the actual water flow 

in the water line proportionately.

Main Features

» Corrosion Inhibits Chemical for Main Engine 

Cooling Water

» pH-adjust Water

» Chlorinate Fresh Water

» Easy Installation and Operation
Ag-S

- Silver Ion Steriliser

Water h

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s The JOWA Group

For many decades now, Jowa has been a 

trusted and reliable supplier of technical 

environmental protection equipment to 

the shipping industry. We can offer every 

conceivable service for installation supervision, 

operation, monitoring and control of Jowa’s 

equipment. You can choose between our own 

personnel or one of our trained representatives 

all over the world.

Sweden

JOWA AB

Tulebovägen 104

S-428 34 Kållered

Sweden

Telephone: +46-31 726 54 00

Telefax: +46-31 795 45 40

website: www.jowa.com

e-mail: info@jowa.se

Norway

JOWA NORGE A/S

Solbergveien 22

3057 Solbergelva

Norway

Telephone: +47-3223 6700

Fax: +47-3223 6701

website: www.jowa.no

e-mail: post@jowa.no

Germany

JOWA GERMANY GMBH

Hansestrasse 21 / Haus 2

18182 Rostock-Bentwisch

Germany

Telephone: +49-381 6302 660

Fax : +49-381 6302 641

website: www.jowa.de

e-mail: info@jowa.de

Netherlands

JOWA HOLLAND

Ebweg 61

2991 LS Barendrecht

Netherlands

Telephone: +31(0)180 55 71 33

Fax : +31(0) 180 61 11 27

website: www.jowa-holland.nl

e-mail: post@jowa-holland.nl

USA

JOWA USA, INC.

59 Porter Road

Littleton, MA 01460

USA

Telephone: +1-978 486 98 00

Fax: +1-978 486 01 70

website: www.jowa-usa.com

e-mail: info@jowa-usa.com 

Singapore

JOWA (S) PTE., LTD.

93 Lorong N Telok Kurau #05-04

Singapore 425244

Singapore

Telephone: +65-6872 8802

Fax: +65-6872 8896

website: www.jowa.sg

e-mail: jowaspdk@singnet.com.sg

China

JOWA (Shanghai) Marine 

Equipment Co.,Ltd.

5111 Luo Shan Road,

Pudong New Area

Shanghai 201204

China

Telephone: +86-21-3390 6889/90/91/92

Fax: +86-21-3390 7550

e-mail: jowasha@jowa.com.cn

China

JOWA (Shaoxing) Enviroment 

Protection Equipment Co.,Ltd.

3# He Hu Road 

Paojiang Industrial Estate

Shaoxing 312071

China

Telephone: +86 575 88179900

Fax: +86 575 88158630

Korea (South)

Jowa Korea Co. Ltd.

1650-6, Song Jung Dong

Gang Seo - Gu

618-819 Busan

South Korea

Telephone: +82-51-831-4911~3

Fax: +82-51-831-4914

website: www.jowakorea.kr

e-mail: info@jowakorea.kr 
For fresh water 

disinfection

Sterilizing drinking water with silver is a 

very old method and has been adopted 

frequently in many parts of the world. As 

a matter of fact, this method goes back to 

antiquity.

Disinfection of water by dosing silver ions into water is 

completely harmless to human as well as animals. The 

amount of silver ions in the disinfected water is well 

below the maximum amount stated e.g. in the directives 

issued by the WHO.

Silver ions do not change the taste, smell or colour of 

the water. Nor do they effect the physical and chemical 

properties of the water. The silver ions only kill off 

bacteria, germs, algae etc.

JOWA Ag-S is well-known to the shipping industry. 

Many thousands of ships have had it installed onboard 

since its introduction in 1970. Due to its simple design 

and high quality, the first installed units are still in 

operation, only periodical replacement of the electrode 

is needed.

The JOWA Ag-S comes as one unit ready to be fitted 

onto the bulkhead. It consists of an electronic cabinet, 

an electrode chamber with two shut-off valves, a flow 

setting valve and a pressure gauge. All these parts are 

mounted on a common electropolished stainless steel 

base plate. A flow switch is also installed.

Main Features

» Sterilizing capacity max. 15 m3/h

» Compact design

» Long lasting residual disinfection

» No change to taste, smell or colour of water

» No change to physical or chemical properties of 

water

» Easy to change electrodes
UV Steriliser

It is equipped with low pressure UV-lamps, powered by electronic high frequency 

ballasts, for highest efficiency and lowest power consumption.

The sterilization process is microprocessor-controlled via data from the UVsensor. The intelligent lamp monitoring system will, in case of any lamp failure, 

inform the user of this occurrence as well as the location of the broken lamp.

The hour meter tells the user to change lamps when the limit of its using time is 

reached.

All necessary data is available in a display window on the control cabinet.

Water h

andling 

s

y

stem

s The JOWA Group

For many decades now, Jowa has been a 

trusted and reliable supplier of technical 

environmental protection equipment to 

the shipping industry. We can offer every 

conceivable service for installation supervision, 

operation, monitoring and control of Jowa’s 

equipment. You can choose between our own 

personnel or one of our trained representatives 

all over the world.

Sweden

JOWA AB

Tulebovägen 104

S-428 34 Kållered

Sweden

Telephone: +46-31 726 54 00

Telefax: +46-31 795 45 40

website: www.jowa.com

e-mail: info@jowa.se

Norway

JOWA NORGE A/S

Solbergveien 22

3057 Solbergelva

Norway

Telephone: +47-3223 6700

Fax: +47-3223 6701

website: www.jowa.no

e-mail: post@jowa.no

Germany

JOWA GERMANY GMBH

Hansestrasse 21 / Haus 2

18182 Rostock-Bentwisch

Germany

Telephone: +49-381 6302 660

Fax : +49-381 6302 641

website: www.jowa.de

e-mail: info@jowa.de

Netherlands

JOWA HOLLAND

Ebweg 61

2991 LS Barendrecht

Netherlands

Telephone: +31(0)180 55 71 33

Fax : +31(0) 180 61 11 27

website: www.jowa-holland.nl

e-mail: post@jowa-holland.nl

USA

JOWA USA, INC.

59 Porter Road

Littleton, MA 01460

USA

Telephone: +1-978 486 98 00

Fax: +1-978 486 01 70

website: www.jowa-usa.com

e-mail: info@jowa-usa.com 

Singapore

JOWA (S) PTE., LTD.

93 Lorong N Telok Kurau #05-04

Singapore 425244

Singapore

Telephone: +65-6872 8802

Fax: +65-6872 8896

website: www.jowa.sg

e-mail: jowaspdk@singnet.com.sg

China

JOWA (Shanghai) Marine 

Equipment Co.,Ltd.

5111 Luo Shan Road,

Pudong New Area

Shanghai 201204

China

Telephone: +86-21-3390 6889/90/91/92

Fax: +86-21-3390 7550

e-mail: jowasha@jowa.com.cn

China

JOWA (Shaoxing) Enviroment 

Protection Equipment Co.,Ltd.

3# He Hu Road 

Paojiang Industrial Estate

Shaoxing 312071

China

Telephone: +86 575 88179900

Fax: +86 575 88158630

Korea (South)

Jowa Korea Co. Ltd.

1650-6, Song Jung Dong

Gang Seo - Gu

618-819 Busan

South Korea

Telephone: +82-51-831-4911~3

Fax: +82-51-831-4914

website: www.jowakorea.kr

e-mail: info@jowakorea.kr 
Flow capacity

Maximum flow at different water qualities (m3/h). Normally the Max/Min capacity of a UV-unit is chosen between 

T50=90% down to T50=60%.

T10=100% T10=98% T10=96% T10=93% T10=90% T10=87% T10=83%

Size T50=100% T50=80% T50=80% T50=70% T50=60% T50=50% T50=40%

UV1 1.41 1.28 1.15 1.01 0.88 0.74 0.60

UV2 1.98 1.79 1.61 1.42 1.24 1.04 0.85

UV3 4.59 4.05 3.51 3.01 2.53 2.06 1.62

UV4 6.98 6.13 5.30 4.54 3.82 3.13 2.49

UV5 12.49 10.52 8.73 7.17 5.79 4.55 3.45

UV31 15.88 14.00 12.14 10.41 8.75 7.13 5.60

UV41 24.09 21.13 18.28 15.67 13.21 10.86 8.66

UV51 43.20 36.39 30.19 24.82 20.03 15.73 11.94

Maximum flow at different water qualities, [m3

/h]

Normally the Max/Min capacity of a UV-unitis chosen between T50=90% down to T50=60%

Technical data

Voltage: 110/230 VAC 50/60 Hz

Power consumption: 35-290W depending on size

UV-dosage: 36000 Ws/cm2

Alarm: Open/closed 1A resistive Relay output, normally

Working pressure: Max 10 bar

Material chamber: Stainless Steel 316L

Weight: 15-25 kg (up to sizes)

Main Features

» Individual lamp monitoring system

» LCD display

» UV-sensor standard

» Low power consumption

» Compact design in stainless steel 316L

» Always with solenoid valve