Offshore Brochure OSF Series - Filtersafe

Automatic Screen Filtration
for the Oshore Industry

1
A world leader in water
CONTENTS
A world leader in water ltration technology.
Filtration of the world’s water:
we set the standards. 1
Meeting the needs of the offshore oil industry
by enhancing oil recovery while
solving water treatment problems. 2
Automatic, self-cleaning electric filters. 3-4
Filtersafe® water filtration technology,
installation and configuration. 5-6
Social responsibility. 7
Research and development. 8
The science behind the range. 9-10
Filtration of the world’s water:
we set the standards.
Earth isn’t called the Blue Planet for nothing. Over seven tenths of the
surface of our globe is comprised of oceans, seas, great and small lakes
and the networks of natural and man-made waterways and reservoirs
embroidering the landscape.
Taking care of our water and providing solutions in filtration and
treatment is the principal challenge facing Filtersafe®, one of the
world’s leading filtration specialists. Whether across industrial,
marine or resource drilling applications, our aim is to ensure
the world’s industries have ready access to the most advanced
filtration equipment available.
At the onset of each design application, Filtersafe’s primary objective
is to engineer and fabricate tailored and standard filter systems from a
range of highly sophisticated and proven materials, utilizing major R&D
initiatives to establish the most appropriate specification of materials
to ensure each finished product exceeds all mandated requirements.
At the very core of Filtersafe’s development philosophy, is a consistent
and dedicated focus on mechanical reliability and efficiency, too, all
combined with robust construction technologies. Simultaneously,
our emphasis commercially remains on the careful balancing of
environmental issues, alongside achieving consistent operational
economies for our customers.
Filtersafe® uses expertise developed over three decades in the design,
manufacture and application of high quality filtration solutions. It is
our often unique innovation that has helped the company contribute
enormously to the efficiency of world water management.
The company is uniquely positioned in the marketplace, and currently
services all major international markets from its Head Office and
manufacturing facility located in northern Israel.

ltration technology.
Meeting the needs of the oshore oil industry
by enhancing oil recovery while solving water treatment problems.
The Offshore frontier is considered to be one of the most demanding
industries that society relies on today. We demand economical,
environmental and production performance, from a frontier exposed
to the elements, forcing an industry where reliability and durability is
essential.
Drawing on our experience in the Ballast Water treatment sector,
Filtersafe® is proud to offer established and proven marine-based
technology to the Offshore industry.
We understand that clean water is essential to maximize the
productivity of the producing oil reservoir. For instance, suspended
solids have major negative effects on the permeability of the oil well,
which results in significant reduction in oil production and the lifetime
of the producing well.
Due to Filtersafe’s successful performance in separating suspended
solids from sea water down to 20 micron and especially with removal
of Zooplankton and Phytoplankton our filtration systems are highly
useful for well water injection water, pre-filtration for RO systems and
other applications related to the offshore industry.
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Automatic, self-cleaning
electric lters.
Key Advantages:
An unparalleled removal rate of TSS, organic matter and
sediment.
99% Removal of Zooplankton.
50% Removal of Phytoplankton.
A continuous, uninterrupted operating flow during cleaning
cycles.
A highly-effective cleaning mechanism, reaching 100% of
the sintered screen, with minimal water discharge.
By incorporating Filtersafe’s OFS-Series
Automatic Electric Filters into your system,
you equip the most efficient sea water filtering
technology on the market.
Benets of Filtersafe® technology.
Filtersafe® supplies to a multitude of water treatment companies
worldwide, many of which are based in Scandinavia, Europe, Singapore
and USA.
We’re one of the very few companies to have responded to todays
challenges and are constantly developing and updating our high
performance self-cleaning automatic filters.
All Filtersafe® products incorporate leading edge, state-of-the-art
components, with advanced technology and proven performance
levels providing the base to combat marine bio-invasions in the
movement of water.
At the heart of each water treatment system, lies the market-leading
OFS-Series Automatic Electric Filter. Installed as the primary filtration
module, these filters play a pivotal role in the removal of sediment,
micro-organisms and other marine elements.
Filtersafe® designs, manufactures and supplies a wide range of
filtration products for the Offshore industry to perform in the most
demanding of conditions. We are able to manufacture filtration
systems in Skid format, and can also supply systems with stand-by
functionality.
Water injection filtration down to 10 micron
Intake water filtration
Oil or Gas pipeline flushing
Protection of cartridge filters
General purpose sea water filtration

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Sintered Screen. Weave-Wire Technology.
By utilising unique and exclusive weave-wire sintered screen
technology, Filtersafe® obtains unparalleled Zooplankton removal
rates. Filtersafe’s fine screen is composed of four sintered, stainless
steel screen layers that create a strong, durable, reinforced filtering
element, which requires no support.
Two types of stainless steel are available:
• 316L, for standard applications.
• 904L Duplex SST, for high-corrosion resistance and prolonged filter use.
Filtersafe’s superior Sintered Screen Weave-Wire technology gives
OFS-series filters a distinct advantage over the competition. Our
filtration performance is second-to-none and in terms removal of
organic matter and TSS.
For instance our 40 micron screen removes 98% of Zooplankton and
up to 50% of Phytoplankton from water intake. This performance
level is converted into exceptional sediment removal performance.
Protective Layer
Filtration (particle size) Control Layer
Protective Layer
Reinforcement Layer
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Inlet
Primary Course Screen
Weave-wire Screen
Suction Scanner
Proximity Nozzles®
Air Release Valve
Outlet
Flush Water Discharge Outlet
Flush Valve
Suction Pump
Worm Gear and Motor
Close Proximity Suction Nozzles®.
Filtersafe® utilises its Proximity Nozzles® patented technology
to efficiently and effectively remove organic matter from the
filter screen without having to halt system operation.
This completely autonomous system uses calibrated
suction nozzles which cover less than 1% of the total screen
area to remove screened matter. This results in extremely
high suction forces that ensure complete cleanliness in
preparation for the next cycle and establishing it as up to
50% more effective than the traditional ‘candle’ system.
The Proximity Nozzles® enable a regulated and consistent
suction force to clean the screen. This resourceful hydraulic
system ensures maximum suction force for removing dirt
from the screen whilst minimizing residual water and pressure
loss from the cleaning process, consequently Filtersafe® uses
a significantly lower amount of ‘wasted water’ during the
filtration’s flushing process.
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OFS-Series technology, inst
Operating Pressures.
Due to the unique design of Sintered Screen and Proximity Nozzle®,
the Filtersafe® automatic filter is the only self-cleaning filter on the
market capable of sustained smooth operations as low as 1.6 Bar
(22psi) head pressure. Even at such extreme pressures, our Proximity
Nozzle® still allows 100% cleaning of the screen after each flush cycle,
ensuring continuous, uninterrupted filter operation without any risk of
‘blindness’.
Filtration Eectiveness.
Filtersafe® technology is designed to combat seawater’s marine bioinvasions,
Phyto- Zooplankton and general suspended solids.
Component Durability.
Using our extensive knowledge in the field of seawater applications,
Filtersafe® products have been engineered for performance and
longevity. Our automatic screen filters employ highly-durable, noncorrosive
components inside and out, to ensure robust, trouble-free
operation, requiring minimal maintenance.
Epoxy-phenol Coating.
Filtersafe® treats the body of its filtration systems with a complex
multi-staged curing process, which during development testing
logged over 2500 continous hours in a salt-cell study.
The process includes a zinc-phosphate treatment and an electrostatic,
oven-cured epoxy-phenol finish, which results in a durable protective
layer especially suited to the various rigours of marine applications
and adverse-saline-conditions. The process complies with numerous
international performance standards, including ASTMB-117.
Turbo TM Model.
All Filtersafe automatic screen filters can be equipped with our unique
Turbo TM technology. Designed to increase the filter’s capability to
operate in high dirt-load situations, this unique facility gives our
OFS-series filter a distinct market advantage in adverse, but equally
common, sediment-rich environments.
Conversely, our Turbo TM technology also allows us to equip our filters
with both nominal and absolute screens down to 10 micron for
increased removal rates.
Available Screens
Micron 400 300 200 150 120 100 80 50 30 20 10
Mesh 40 50 80 100 120 150 200 300 450 500 600

allation and conguration.
Filtersafe® can offer more versatility in spatial arrangements,
by supplying units in both horizontal and vertical formats.
This ‘modular’ system enables a vertical filter to operate in
the exact same manner as a horizontally positioned unit
and to the same performance standard, whilst substantially
reducing its area footprint.
0˚ Standard Position 90˚ Outlet 180˚ Outlet 270˚ Outlet
Horizontal Conguration Vertical Conguration
Model *Max.
Flow Rate
In/Out
Connections
Weight
gpm m 3 /hr Inch mm lbs kg
Single
OFS-025H 219 50 3 80 385 175
OFS-050H 350 80 4 100 407 185
OFS-050H 548 125 6 150 440 200
OFS-070H 657 150 6 150 616 280
OFS-070H 788 180 8 200 638 290
OFS-100H 964 220 8 200 704 320
OFS-100H 1,095 250 10 250 748 340
OFS-100H-T 1,314 300 10 250 748 340
OFS-150H 1,643 375 12 300 1,188 540
OFS-150H-T 1,883 430 12 300 1,199 545
OFS-200H 1,883 500 14 350 1,364 620
OFS-200H-T 1,883 600 14 350 1,386 630
Duplex
OFS-300H 3,285 750 14 350 2,640 1,200
OFS-300H-T 3,723 850 16 400 2,684 1,220
OFS-400H 4,380 1,000 16 400 3,212 1,460
OFS-400H-T 5,256 1,200 16 400 3,256 1,480
OFS-300H-2M 6,570 1,500 18 450 3,432 1,560
OFS-400H-2M 8,760 2,000 18 450 7,216 3,280
OFS-300H-T-3M 10,950 2,500 20 500 10,296 4,680
OFS-400H-3M 13,140 3,000 20 500 10,868 4,940
OFS-400H-T-3M 15,330 3,500 20 500 10,934 4,970
OFS-400H-4M 17,520 4,000 24 600 14,432 6,560
OFS-400H-5M 21,900 5,000 24 600 18,040 8,200
Duplex
Modular Modular
* with 40 um screens
Model *Max.
Flow Rate
In/Out
Connections
Weight
gpm m3 /hr Inch mm lbs kg
Single
OFS-025V 219 50 3 80 429 185
OFS-050V 350 80 4 100 451 205
OFS-050V 548 125 6 150 484 220
OFS-070V 657 150 6 150 660 300
OFS-070V 788 180 8 200 682 310
OFS-100V 964 220 8 200 759 345
OFS-100V 1,095 250 10 250 803 365
OFS-100V-T 1,314 300 10 250 803 365
OFS-150V 1,643 375 12 300 1,243 565
OFS-150V 1,883 430 12 300 1,254 570
OFS-200V 2,190 500 14 350 1,430 650
OFS-200V-T 2,628 600 14 350 1,452 660
OFS-400SV 4,380 1,000 14 350 1,980 900
OFS-400SV-T 5,256 1,200 16 400 1,980 900
OFS-300V 3,285 750 14 350 2,750 1,250
OFS-300V-T 3,723 850 16 400 2,794 1,270
OFS-400V 4,380 1,000 16 400 3,322 1,510
OFS-400V-T 5,256 1,200 16 400 3,366 1,530
OFS-300V-2M 6,570 1,500 18 450 3,652 1,660
OFS-400V-2M 8,760 2,000 18 450 7,436 3,380
OFS-300V-T-3M 10,950 2,500 20 500 10,626 4,830
OFS-400V-3M 13,140 3,000 20 500 11,198 5,090
OFS-400V-T-3M 15,330 3,500 20 500 11,264 5,120
OFS-400V-4M 17,520 4,000 24 600 14,872 6,760
OFS-400V-5M 21,900 5,000 24 600 18,590 8,450
* with 40 um screens
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Social responsibility.
All Filtersafe® filtration systems are designed to incorporate
materials which are selected for minimal environmental
impact. Each component is tested to ascertain material
weakness in the light of its intense activity in harsh and
damaging conditions. Filtersafe® automatic systems are
also designed and engineered to compliment the materials
specified by clients in their manufacture of complete
treatment systems specified for marine purposes. Research

Your Assurance of Quality.
Filtersafe® manufactures its cutting-edge OFS-series filter in
accordance with the following International Performance and
Quality Standards: ISO 9001: 2008, DNV 2009.
Our association with the ISO 9001:2008 mark gives Filtersafe®
confidence in knowing we can comply with any standard required
by our clients. We can build in accordance with ASMI standards as
well as other classification societies’ approvals, and upon request,
attain ASMI certification. In association with several of our clients, we
have also achieved Approval status from Germanischer Lloyds.
Worldwide Service Network.
and Development.
Innovation in Filtration Science.
Our R&D programs have also played active roles in maintaining
Filtersafe’s pioneer status in the water filtration industry. The
confidence and assurance we assume with the procurement of
trustworthy technologies and operating performance, have helped
shape a strong ethic pursued throughout research, development and
advanced testing.
The R&D programs have laid the foundations for our market-leading
technology and ensured our status as principal innovators in our
field. In conjunction with our recent partners, NIOZ, MERC, GSI and
University of Newcastle, UK, among others, Filtersafe® has tested
the performance of its automatic screen filters to meet the rigorous
demands of all marine industry standards.
Being a globally-focused company, Filtersafe® prides itself on
unprecedented levels of service to its customers. Filtersafe®
enjoys a worldwide reputation for its commitment to the quality
and performance of each filtration unit we sell.
Partners and Contractors.
We have established and enjoy partnerships with first-class
contractors who utilise leading-edge technology in industrial
fabrication and heavy machining.
Through scientific development, we have been able to implement
the following advances in our product range:
Sintered Screen technology; effective and economic
filtration media.
Proximity Nozzle® technology that performs autonomously
under even the most severe conditions.
Corrosion prevention.
Increased energy efficiency.
Refined water-saving methodology.
Courtesy of NIOZ
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The proven science behin
D2 Standard Replica Tests
Filtersafe® in conjuction with its research partners, has successfully
proven its industry leading performance in the Water Treatment
filtration sector by conducting a series of scientific tests on its Weave
Wire Sintered Screens and Proximity Nozzle® technology. The results
clearly indicate positive ecological benefits and lucrative advantages
for all companies involved in the business of Water Treatment systems.
Biological Test Data
PHYTPLANKTON ZOOPLANKTON
Test Cycle Average Removal Average Removal
% of org. 10 ≤50 % of org. >50
1 62.80 99.20
2 47.56 94.29
3 - 97.93
4 31.45 96.19
5 54.94 93.85
Courtesy of NIOZ
Organic matter ltration.
Phytoplankton Test Methodology
Number of organisms per 20 liter
Organisms 10 µm ≤ 50 µm.
Three 20L replicates for each “control” and “treated”.
40 µm filter was used.
Water pumped into a storage tank, zooplankton and algae were
added.
Phytoplankton Test Results
Zooplankton Test Methodology
Organisms > 50 µm.
Number of organisms per 100 liter
Three 100L replicates for each “control” and “treated”.
40 µm filter was used.
Water was pumped from Cullercoats Bay.
Zooplankton Test Results
Conclusions
Highly eective at removing organisms
> 50 µm showing > 99% removal.
Has moderate eect in removing organisms
10 < 50 µm showing an average 50% removal.

d the range.
Actively preventing accumulation of Sediments.
Filtersafe® has recently concluded scientific tests in association with
BaWaPla and NIOZ in order to determine the BSF-series filter’s ability to
reduce sediment load in BWT systems and ballast water tanks.
Test Methodology
Filtersafe® chose the wet volumetric TSS loading method rather than
the standard dry and weighing method in order to best simulate true
conditions in ballast water tanks.
Sediment Test Results
Results of this study parallel a series of tests performed at NIOZ and
Newcastle University (UK), concluding that Filtersafe® BSF-Series
filters are highly effective in removing Total Suspended Solids (TSS)
loads by up to 96% with our standard 40 μm filter.
This is an obvious benefit for ship owners with long periods
between ballast water tank cleaning and compliments the very high
performance of organic matter removal obtained by our BSF-series
filters.
Conclusion
Very high removal of TSS from ballast water
BSF-Series 40 µm screen proving 96% removal.
Sediment Test Data
Results ml Results ppm
Pre-Filter 2.5 2500
Post Filter < 0.1 100
Removal Rate > 96%
BEFORE
2.5 ml sediment
residue
AFTER
0.1 ml sediment
residue
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OFS-Series Standard * Specications
Operating Specications
Minimum Operating Pressure 29 psi (2 Bar), 21 psi (1.6 Bar) with suction pump
Maximum Operating Pressure 145 psi (10 Bar)
Electric Power 3 phase 380V-440V AC (50Hz)
Temperature Gauge 0˚C - 50˚C
Exhaust Valve
Design Specications
Pneumatically actuated butterfly valve
Filter Housing Carbon steel 37-2 with SMO fitting or St. st.
Housing Coating 200 micron Epoxy-phenol, Zinc-phosphate treated
Screen Stainless Steel 316L or 904L Duplex
Seals Synthetic Rubber
Internal Parts St. st, PVC, Teflon, Erlite
* For specifications exceeding these parameters, please contact filtersafe.
CLEAR SOLUTION
For more information check our website
and locate the email or telephone number
of your relevant customer representative.
De Eendracht 11
NL-1846 LP Zuidschermer
The Netherlands
Phone +31(0)72-504 45 20
Fax +31(0)72-850 26 33
Mobile +31(0)65-066 18 73
Internet www.alter.nl
E-mail info@afilter.nl
Filtersafe reserves the right to change any of the information presented in this document
without prior notice. The data presented in this document is for general information only
and cannot be used for quotation purposes. Please contact Filtersafe for specific quotes. www.studio-tefen.co.il © Copyright Filtersafe® 2011 - OC 08/2011 v.1