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I N T E R N A T I O N A L

Your Global Source

FILTRATION NEWS

July/August 2013Volume 32 No. 4

www.filtnews.com

The Green Future of LNG as Primary Energy Source

Benefits and Making of Cartridge Filtration

A2Z Developing New Turnkey SolutionsA2Z Developing New Turnkey Solutions

The Green Future of LNG as Primary Energy Source

Benefits and Making of Cartridge Filtration

2014 Buyers’ Guide2014 Buyers’ Guide

2 • August 2013 • www.filtnews.com

Published byINTERNATIONAL

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Publication DataFiltration News (ISSN:1078-4136) is publishedbi-monthly by International Media Group, Inc.Printed in U.S.A., Copyright 2013.This publication has a requested and controlledsubscription circulation - controlled by the staff ofFiltration News; mailed bi-monthly as PeriodicalsPostage Paid (USPS 025-412) in Novi MI andadditional mailing offices.Filtration News is not responsible for statementspublished in this magazine. Advertisers, agenciesand contributing writers assume liability for allcontent of all submitted material printed andassume responsibility for any claims arisingthere-from made against publisher.

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IN THIS ISSUEJune/August 2013, Vol. 32, No. 4

Cover Story | A2Z Filtration Specialities

New Developments in Filter Manufacturing Equipment 6

Process | Engineering

The Green Future of LNG 10

Cartridge | Filtration

Controlling Emissions with Highly Engineered Cartridge Filter Technology 16

Twist-LOK Filter Series Provides Versatile Phase Separation 22

Variables Impacting Resin Bonded Cartridge Manufacture and Performance 26

Company | News

Quantachrome to Open Facility in India 32

FILTECH 2013 Conference to Feature 200 Papers 66

Buyers' Guide 2014

Directory Index 34Company Listings 36

Equipment | News

Orival Filter Series Eliminates High Maintenance Costs 63

Efficient Air Pollution Control from Dürr for Small Exhaust Air Flow Rates 64

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� �� Cover courtesy of A2Z Filtration


Editorial Advisory Board

Editorial Board ChairmanEdward C. Gregor, ChairmanE.C. Gregor & Assoc. LLCTel: 1 704 442 1940Fax: 1 704 442 [email protected]&A, Filtration Media

Haluk Alper, PresidentMyCelx Technologies Corp.Tel: 1 770 534 3118Fax: 1 770 534 [email protected] Removal – Water and Air

Jim JosephJoseph MarketingTel/Fax: 1 757 565 [email protected] Filtration

Robert W. McilvaineTel: 1 847 272 0010Fax: 1 847 272 [email protected]. Research & Tech. Analysis

Dr. Graham RidealWhitehouse Scientific Ltd.Tel: +44 1244 33 26 26Fax: +44 1244 33 50 [email protected] and Media Validation

Tony ShucoskyPall MicroelectronicsTel: 1 410 252 0800Fax: 1 410 252 [email protected], Filter Media,Membranes

Scott P. YaegerFiltration and SeparationTechnology LLCTel/Fax: 1 219 324 3786Mobile: 1 805 377 [email protected], New Techn.

Mark VanoverBayer MaterialScience LLCKey Account ManagerTel: 1 314 591 1792Email:[email protected] Systems

Dr. Bob BaumannAdvisory Board Member Emeritus

Andy RosolGlobal Filtration Products Mgr.FLSmidth [email protected]: 1 800 826 6461/1 801 526 2005Precoat/Bodyfeed Filter Aids

Clint ScobleFilter Media Services, LLCOffice: 1 513 528 0172Fax: 1 513 624 [email protected] Filters , Filter Media, Baghouse Maintenance

Gregg PoppeThe Dow Chemical CompanyTel: 1 952 897 4317Fax: 1 942 835 [email protected] Water, Power,and Membrane Technology

Henry Nowicki, Ph.D. MBATel: 1 724 457 6576Fax: 1 724 457 [email protected] Carbons Testing,R&D, Consulting, Training

Brandon Ost, CEOFiltration GroupHigh Purity Prod. Div.Tel: 1 630 723 [email protected] Filters, Pharmaceuticaland Micro-Electronic

Dr. Ernest Mayer E. Mayer Filtration Consulting, LLC Tel: 1 302 981 8060Fax: 1 302 368 [email protected]

Wu ChenThe Dow Chemical CompanyTel: 1 979 238 [email protected] Filtration (liquid/gas)Equipment and Media

Peter R. Johnston, PETel/Fax: 1 919 942 [email protected] procedures

Peter S. Cartwright, PECartwright Consulting Co.Tel: 1 952 854 4911Fax: 1 952 854 [email protected], RO,Ultrafiltration

For more information visit us atwww.ahlstrom.comEmail: [email protected]


Cover Story | A2Z Filtration Specialities

2Z Filtration Specialities is adesigner and manufacturerof filter production lines, fil-

ter testing equipment and filter compo-nents with a client base in over 65countries across six continents. Thecompany has evolved from an equip-ment and components supplier to de-veloping complete customer solutionsin the field of filter manufacturing.

A dynamic work force comprising ofover 50 engineering professionals covereverything from designing, manufactur-ing, and installation. A2Z provides com-plete turnkey solutions around the globe,using state-of-the-art Solid Works® 3Ddesign software for design and simula-tion of filter manufacturing lines.

Some of the recent production linesinclude high temperature air filters madefrom glass fiber material, inline pleatedpack cutter and wire mesh, along withblade pleaters for pleat depths down to

2.5 mm (0.1”) and servo rotary pleatersalong with pitching system.

HIGH TEMP FILTERS MATERIALAs the filtration market grows for

high temperature air filters, many op-tions are available to users based on ef-ficiency, cost and fitment requirements.One popular solution that has emergedis the use of glass fiber pleated materialwith glass fiber ribbon spacer. These airfilters are easy to retrofit into existinghousings/sizes and do not add substan-tial tooling or initial change over costs.

While providing required effi-ciency, the filter itself consists of glassfiber media, which can withstandtemperature between 400-500˚F. Thispleated media is then separated withglass fiber ribbon on both the in-feedand outlet side to reduce pressuredrop and improve filter life. Thepleated pack (above) is then placed

into an aluminum/metal frame and isassembled without use of any glue.

These filters can easily be placed inany existing housing and provide longlife, better efficiency compared to olddesigns using aluminum separators. Theproduction process tends to be more ef-ficient thus being a more cost effectivesolution for end users.

A2Z Filtration makes a pleating lineknown as A2Z Intelligent Blade Pleaterwith Ribbon Pitching System, which

New Developments in Filter Manufacturing Equipment

A

Inline pleated pack cutter Pleated pack by A2Z’s intelligent rotarypleater with pitching system

High temperature pleated pack

can produce such filter packs rangingfrom 1” to 6” in width and up to 40”.

INLINE PLEATED PACK CUTTERThe Inline Pleated Pack Cutter is a

unique offering for filter manufacturerswho require slitting the material afterpleating. This requirement is criticaldue to very tight tolerances, the behav-ior of the material while pleating, andthe ability to run multiple webs for in-creased productivity.

A2Z Inline Pleated Pack cutter allowsusers to cut the multi layer packs afterthe media is pleated in various widths,with accuracies of ± 0.3mm (± 0.012”).This helps in providing an accurate cutto size filter to meet critical dimensionsup to seven layers, and can cut materialssuch as wire mesh, nylon mesh, mem-brane, spun bonds, glass fibers, etc.

PLEATER WITH PITCHING SYSTEMThe A2Z Intelligent Rotary Pleater

with pitching system has the ability tochange pleat depth on the fly. The op-tion of single or twin indenting and theability to pleat both cellulose and non-woven medias are provided. Afterpleating, the equipment pitches thepleat and applies paper or hotmeltstrips on the top or bottom or bothsides of pleat. The equipment automat-ically cuts the pack based on the lengthor number of pleats. The wholeprocess is achieved without any man-ual intervention. The equipment is de-signed to pleat up to 4¼” pleat height.

This process is used to manufacturecabin air filter as well HVAC panel filters.Due to its ease of use, versatility and quickreturn on investment, the equipment ispopular with filter manufacturers.

PLEAT DEPTHS DOWN TO 0.1 INCH A2Z Intelligent Blade Pleater is used

for very precise pleating including pleatdepths down to 2.5mm (0.1”) as shownin photo above .

The advantages of this equipmentare: quick set up and pleat depth rangesfrom 2.5 -152.5mm (0.1” - 6”), givinga quick return on the investment. Forpleating of small steel strips, a provi-sion is provided to remove the pleatedpack from the feed side; therefore, anoperator is not required to move to thedischarge side to remove the pleat pack.

Each of the above systems uses

Allen Bradley® or Siemens® Controls,Servo Motors, and other ”state of theart” inputs to provide a perfect fit to thepurpose product.

A2Z excels in providing superiorvalue and durable, globally servicea-ble product lines. Components aresourced from leading global suppliersto ensure ease of availability and trou-ble free maintenance. Features suchas remote access for servicing and upgradation of equipment software cou-pled with pictorial manuals makeA2Z products easy to use, efficientand a great value.

www.filtnews.com • August 2013 • 7

FN

Intelligent rotary pleater along with pitching system

Blade pleater for pleat depth down to 0.1 inch or 2.5 mm

For more information, visit www.a2zfiltration.com or contact:Design Centre & Manufacturing Facility

D-1, Infocity, Phase-II, Sector-33, Gurgaon 122 001, INDIA

Phone: +91 (124) 478 8700 • Fax: +91(124) 400 1388Skype ID: a2zfiltration

Email: [email protected], [email protected], [email protected]



hen all the factors suchas greenhouse warmingpotential, water demand

in production and usage, energy den-sity and availability are considered, it isclear that natural gas will become thepredominant energy source for the nextfew decades, replacing coal and oil inmany cases.

Ironically, the adoption of naturalgas as the predominant energy sourcecould actually render the currentgrouping of green alternatives econom-

ically andecologicallyviable. Cur-rent greenenergy alter-natives arenot reallyvery greenor economi-cally viablewhen meas-ured by thesame param-eters asabove, such

as energy density, etc. (Energy densityis the total amount of energy per unitvolume.) They have to be subsidized.The barrier to economic viability is thediscontinuous nature of energy deliv-ery leading to the need for storage tomeet demand when needed. This ofteninvolves the use of costly and pollu-tion-creating storage devices such asbatteries. These discontinuous sourcesof energy can be rendered green byeliminating the need to store energywith a continuous secondary source of

energy, which can be used to augmentduring downtimes. Liquefied naturalgas (LNG) is the logical candidate tofulfill this function as it is plentiful,there are vast reserves of it, and it isrelatively greener than other continu-ous sources of energy at the cost of arelatively minor loss in energy density(see Table 1).

There are two major impedimentsto the adoption of LNG as the nextgeneration “greener” fuel. The firstimpediment has to do with the ulti-mate fate of the fracking water and theenvironmental impact it will have. Atthis point in time, multiple studieshave been conducted but are incon-clusive as it has been difficult to de-termine the diffusion profile of theunrecoverable fracking water. Thesecond impediment is the emergingrecognition of the ubiquitous pres-ence of mercury. A recently con-structed natural gas power plant inAustralia discovered high levels ofmercury. Because of this, the projectcosts have increased by over 60%,now totaling over $5 billion, and de-

The Green Future of LNGBy Haluk Alper, MyCelx Technologies Corporation

W

Illustration 1: Corrosive effects of Mercury on Aluminum. Source:Corrosion of type 6061-T6 aluminum in mercury and mercuryvapor by S.J. Pawel and E.T. Manneschmidt

Table 1: Energy density


layed production by almost five years.There are multiple other recent exam-ples as well. Concentrations of mer-cury vary from region to region, but itis always there. Areas of SoutheastAsia, Europe and Eurasia, for exam-ple, can have anywhere from 70 to3,500 µg/m3 of mercury according toa recent report by the Natural Re-sources Defense Council. The world-wide production of natural gas is 3.3trillion cubic feet per year. Each 1,000µg/m3 generates 6 million pounds ofmercury. This can theoretically con-tribute from nearly 2 million to 21million pounds of mercury from thisregion alone. Some of this mercury isremoved in the production process;approximately one-third is burned offinto the atmosphere at the thermal ox-idizers, and the fate of the rest is un-known although it is safe to assumethat some of it ends up in the product.Mercury in the production process

and in the end product is highly un-desirable due to its corrosive effectson equipment and its detrimental ef-fects to living things and ecosystems,especially after it is transformed tohighly toxic organic states, which canaccumulate in the food web.

The presence of mercury has beenan issue in production (see Illustra-tions 1 and 2) and is now becoming anobstacle in the adoption of LNG in sec-tors, which are eager to switch. Onesuch sector is commercial shipping.Commercial shipping has found it verydifficult to comply with sulfur and ni-trogen oxide emissions with the type offuels they use (Bunker C or marinediesel oil). These fuels are rich in sul-fur and highly polluting. Natural gaspractically eliminates this concern (seeTable 2), however, ships are composedprimarily of metal and the concern ofmercury embrittlement of metal mustbe addressed before adoption.

PROPULSIONMercury is generated with the gas

and attempts to remediate are cur-rently limited to the productionprocess, in many cases, as an unin-tended and undesirable secondary ef-fect of other processes. In theproduction of LNG it is vital to re-move all traces of water, hydrocar-bons and other compounds, whichare liquids at room temperature. Ifthese materials pass through to theliquefication process it can result ininefficiency or even catastrophic fail-ure. Therefore, in the production ofnatural gas, multiple redundantprocesses exist for the removal ofthese liquids. Mercury is oftendragged along. The first significantremediation process is coalescence,whereby all the liquids, which can bephysically coalesced are removed andresults in a variable mixture referredto as condensate, which is approxi-mately 50% water and 50% assortedhydrocarbons. Some mercury is re-moved at this stage. After coales-cence, polishing processes areemployed, using molecular sieves topolish out any traces of water and ac-tivated carbon to polish out anyresidual liquid hydrocarbons. Some-times the carbon is modified withsulfides, colloidal precious metals orbromides in order to polish out resid-ual mercury. Some mercury is re-moved at this stage. After theliquefication process, the gas is usu-ally processed through a reverse os-mosis membrane to recover anyresidual liquefiable hydrocarbonsand to discard and burn off non-liq-uefiable hydrocarbons at the thermaloxidizer. We know that the coalesc-ing and polishing process steps areonly partially effective because meas-urements of mercury at the thermaloxidizer can often be as high as 1ppmand concentrations in the retainedgas can be equally high.

In order to eliminate the mercuryimpediment, we must understandwhy multiple redundant coalescenceand polishing processes, and even

Illustration 2: Liquid Metal Embrittlement, LNG Plant – Skikda, Algeria


Xinxiang Tiancheng Aviation Purification Equipments Co. Ltd.

Our company specializes in designing & manufacturing and supplying many kinds of filters,

complete filtrating equipments and their elements with different materials according to your

drawings or new & old samples.

Xinxiang Tiancheng Aviation Purification Equipments Co. Ltd.No. 1, Chuanye Road, Dvelopment Area, Xinxiang City 453003, Henan

P.R. China

Contact Person in China: Mr. Li Minghao

Tel: +86-13673735086 Fax: +86-373-3520026 Website: www.tchkjh.comEmail: [email protected] • [email protected]

Contact Person in USA: Mr Liu Shengyuan

Tel: 4015881868 • [email protected]

For airplane For special vehicle

For coal machinery

For fluid cleaning systemFor dust collector of cement industry

For ultrafilter


Process | Engineeringprocess steps designed to react withgaseous mercury, are not effective. Aswith many grand mistakes in science,which can last for centuries, theproblem lies in the very basic, funda-mental assumptions. All of theprocess steps, which directly or indi-rectly remove mercury, are predicatedon the mercury behaving either as agas or as a liquid (sulfide modifiedgranular media, coalescence, respec-tively). MyCelx has discovered thatthe mercury present in LNG is in aunique state. This realization hasbroad implications for mercury reme-diation technologies and we believethis explains the shortcomings of thecurrent approaches. MyCelx is in theprocess of developing elements,

which remove mercury by exploitingits true nature present in LNG.

As the use of LNG increases, it willbe important to remove mercury dur-ing the production process in order toavoid catastrophic failure, as a worst-case scenario, and to avoid its releaseinto the environment as an ongoingconsideration. It is also possible thatnatural gas will develop a pricingstructure similar to premium andeconomy gasoline based on theamount of mercury present in the endproduct. The ability to polish residualmercury out of processed LNG willbecome important to adding value,and thus profitability, to the endproduct. MyCelx has completed ini-tial developmental phases and will be

pilot testing elements for these appli-cations in the near future. MyCelx isdedicated to removing one of themajor hurdles to the implementationof LNG as a cleaner energy source onits own, and also one, which can beused to replace the need for batteriesand storage devices through real-timeaugmentation of discontinuous greenenergy technology.

For more information contact:MyCelx Technologies Corp.Tel: 1 770 534 3118Fax: 1 770 534 3117Email: [email protected]: www.mycelx.com

FN

Read more articles online: www.filtnews.com



ver the last number of yearsClear Edge™ has been devel-oping its range of specialized

cartridge technology for a set of chal-lenging applications in the de-dustingand the hot gas filtration markets.

The solutions have been driven bythe pressing need for industrialprocesses to control emissions to meettighter regulatory standards both in-line and with end of pipe technology.

As global emissions in the developedworld have tightened from PM10 to PM2.5 (particulate matter 2.5 micrometers(µm)) Clear Edge has been developing

and testing both Compact Filters andHot Gas Filters in a range of industrialprocesses to meet even tighter emissionlimits while maintaining high flowrates and energy efficient systems. Thisarticle outlines some of the new tech-nology in this family and the next gen-eration of filter products offeringcommercially competitive Air PollutionControl (APC) solutions.

COMPACT FILTER ELEMENTSClear Edge compact filter elements

are highly engineered pleated filterunits. The construction is entirely self-

supporting and does not require a sup-port cage (see Figure 1).

Clear Edge CFE, a proprietary technol-ogy, which the company is continuouslyadvancing, combines the advantages offilter bags (horizontal installation) andcartridges (high filtration area).

CFE can handle high dust load en-vironments and can be cleaned effi-ciently by reverse pulse cleaning. Thewhole filter area is therefore continu-ously available. In recent years therange and size of these elements hasbeen expanded up to 6M2 per element(approx. 65ft2).

Controlling Emissions with Highly Engineered Cartridge Filter TechnologyBy Richard Lydon, VP Technology

Figure 1: Examples of a range of Compact Filter Elements (CFE™) from Clear Edge.

O

Cartridge | FiltrationNatural Filtration | Algae


The main features and benefits ofCFE are:

• Up to 3 times more filter area compared to conventional filter bags

• Can reduce filter house volume byup to 70% (see Figure 2) saving upto 40% on running and energy costs

• High efficiency – in most plants lower than 1mg/Nm3 emissions (0.0004 grains per scfm)

• Long service life (circa 3-5 years)• Excellent cake removal achieved with reverse pulse cleaning

• Simple, quick and clean to install and replace

• Can be retrofitted into existing units

• CFE are more compact, making indoor installations possible

Depending on the application, ClearEdge can customize the filter elementswith different finishes, e.g., oleo- andhydrophobic, temperature resistant,

microporous coated, PTFE-membranesurface, antistatic, and many more.Clear Edge has many years of experi-ence designing and using CFE – typicalapplications include:

• Welding fumes especially in laser cutting in high purity environments

• Automotive including paint shop spraying

• Construction and mining, i.e., tunneling

• Milling, especially powder handling

During the last 22 years, Clear Edgecustomers have installed thousands offilter elements over the world coveringpractically all industrial de-dusting ap-plications.

In conclusion, CFE are an alterna-tive to bags and traditional cartridgesespecially where space or height is at apremium. Due to the unique design,CFE can be cleaned and maintainedmore easily than traditional cartridges,

offering longer service life. In addition,CFE can be used in difficult environ-ments and industrial processes savingenergy and operational costs.

CERAFIL – HOT GAS FILTERS Cerafil™, from Clear Edge, is a

family of low-density ceramic filter el-ements, which are employed in filterplants in much the same way as filterbags except at much higher tempera-tures. Typically, Cerafil is used in therange from 200 - 800°C (392-1,472˚F), thereby avoiding acid andwater dew points and allowing for ap-plication at the temperature that bestsuits the duty. In addition, Cerafil el-ements are extremely efficient andcorrosion resistant and can be used inthe most difficult gaseous conditions.

Developed over a number of years,Cerafil is a monolithic low-density ce-ramic element, which is highly effec-tive and efficient at handlingsub-micron particles in industrial gasprocesses. The product family has beenexpanded to three specific productlines, which are available in a range ofsizes up to 3m (10ft.) in length and150mm (6”) diameter.

The applications of this “Best Avail-able Technology” include Air PollutionControl (APC), Product Collection andProduct Recovery. The one-piece ele-ment is self-supporting and robust in avariety of conditions, has long in serv-ice life and is highly porous and futureproofed for forthcoming tighter envi-ronmental legislation (capable of filter-ing gas

Some of the key features and benefitsof Cerafil technology are:

• High efficiency- Less than 2mg/m3 emissions (0.0008 grains per scfm)

- Easily handles sub-micron particles and PM2.5’s

• High temperature capability- Temperature resistant up to 900˚C (1650˚F)

- Normally used up to 500˚C (932˚F)

• Corrosion resistant- Is virtually chemically inert- Can tolerate changes in operational conditions and temperature

• Range of products and sizes- Up to 3m long 150mm diameter(10’ long x 6” diameter)

- Normally new plant design, but can be retrofitted into existing systems

Many in dustrial processes, and inparticular, high-temperature processes,emit off-gas streams of mixed gas ladenwith particulate matter that has a vari-able composition. Managing these off-gas streams is a necessary part of thein dustrial activity. Air emissions froman industrial plant can involve a broadrange of species, including: particulatematter, oxides of nitrogen (NOx), ox -

ides of sulfur (SOx), hydrogen chloride,volatile organic compounds (VOCs),polychlorinated biphenyls/dibenzo fu-rans (dioxins), nitrous oxide (N20),and heavy metals. The abatementregime is required to reduce these pol-lutants to below the regulated limits.The Environmental Protection Agency(EPA) is currently looking and enactedlegislation to control these mixed pol-

Figure 3: A typical plant configuration for Cerafil in hot gas filtration application.



lutants across a number of industries,including: glass, carbon black manufac-ture, cement kilns, and coal production.

A number of established and emerg ingtechnologies have been developed to meetregulated emission limits. These include:barrier filters, dry, semi-dry and wetscrubbing, cyclones, elec trostatic precip-itators, and catalyst-conversion processes.These clean-up processes are used, oftenin combina tion, to achieve at least the reg-ulated emission limits. Process choice isaf fected by many factors, apart from theregulations in force, not least of which areeconomics and reliability.

However in order to meet tighterlegislation and permit limits these tech-

nologies need to be used sequentiallyand sometimes in various steps of theprocess flow diagram to bring the emis-sions below the newly mandated EPArequirements.

In recent years, Clear Edge has ad-vanced the technology to develop Cer-afil TopKat™, a pioneeringbreakthrough technology combiningthe advantages of Cerafil with an incor-porated active catalyst for the removalof Nox, Dioxin, Sox, Rox and VOCs.This patent pending technology pro-tects the catalyst from poisoning by in-corporating it in the wall of the filterelement (a common problem with Se-lective Catalytic Reduction (SCR) tech-

nology) see Figure 4.Clear Edge has been researching and

developing the Cerafil TopKat technol-ogy platform for over 10 years and hasbuilt up many years of experience ap-plying this newly emerging technologyin critical applications. A typical plantlayout is shown in Figure 5. Clear Edgehas thousands of filter elements inmany applications worldwide coveringa variety of industrial uses.

The main features and benefits ofCerafil TopKat include:

• Can replace and consolidate inefficiend Electrostatic Precipitator (ESP), SCR and conversion processes

Figure 4: Cross section of the wall of a Cerafil TopKat element showing the nano catalyst embedded into the wall of the element.

Figure 5: Typical plant layout incorporating Cerafil TopKat and typical performance data.

into a one step filter.

•The dual-purpose filter consolidates the equipment train, which save on capital (Capex), footprint, and energy costs and simplifies the process

•Maintains gas temperatures and plant buoyancy for downstream processes or energy recovery

•Removes Particulate Matter below2mg/m3 dust

•Removes or minimizes the following gaseous mixed pollutants to the following levels:

- C 95% HCl removal- C 80% SO2 removal- Reduces NOx with efficiencyof up to 95%

- Reduces Dioxin to a >99% removal level

In conclusion, Cerafil offers cus-tomers future proof technology interms of stricter emissions legislation,a simple abatement train in terms ofCerafil TopKat, lower total cost of own-

ership, and the ability to recover energyfrom your process and multi-elementpollutant clean up.

Clear Edge™ Filtration, now partof the Filtration Group, offers a com-plete line of Industrial Process Filtra-tion products from its locations acrossthe globe. Global Filter and Jonell arealso specialized cartridge filter compa-nies within the Filtration Group pro-viding customers innovative solutionsacross market sectors.

For more information visit: www.clear-edge.com


FN

Visit us online www.filtnews.com



iltration plays a key role in notonly protecting society fromcontaminants but also protect-

ing industrial equipment as well byseparating fluid and particles or sepa-rating different chemical types of ma-terials. As a result of today’soperational complexities, industry fil-tration equipment demands havegrown increasingly more sophisticatedto meet the challenges.

A phase separation filter must beboth capable of seamless performancein wide-ranging conditions in themidst of even the harshest environ-ments. A premier solution has arrived,with the introduction of Twist-LOK™Filter Series’ versatile separation sys-tem from Jonell, Inc. This innovativeproduct delivers superior contaminantremoval and coalescing efficiency, plusthe patent-pending Twist-LOK lockingmechanism.

Twist-LOK’s major feature is its two-piece design, allowing real-time fieldcustomization and the ability to replacethe first stage filter element withouthaving to also replace the second stagecoalescer element. Also, Twist-LOK isdesigned specifically for installationinto Peach® Gemini PuraSep® vessels.

BREAKTHROUGH NATURAL GASTwist-LOK’s revolutionary design ac-

complishes multiple objectives in doingits job. This filter optimizes flexibilityand reliability while it processes highliquid loads with exceptional particu-late handling. Specifically for the energyindustry, which has always been in theforefront of innovative technology,Twist-LOK’s first and second stage ap-plications are designed to remove liquidand solid contaminants from natural

Twist-LOK Filter Series Provides Versatile Phase SeparationBy Mike Click, Marketing Director, Jonell Inc.

F

Twist-LOK's elements, showing first stageidentified by color code blue end caps andsecond stage on the left, identified by colorcode white end caps.

and process gas. Its assembled cartridge provides a

Stage 1 “outside to inside” flow di-rection filter element and Stage 2provides the reverse “inside to out-side” flow coalescer element. Withinthis process, a new feature providessavings not available with other car-tridges. With other filtration/coalesc-ing elements, it was necessary toreplace both stages, which oftenmeant wasting a clean Stage 2 ele-ment. With the new Twist-LOK FilterSeries, however, users can optionallyreplace and optimize Stage 1 with noneed to replace Stage 2, a bonus forcompanies that appreciate opportu-nities to take advantage of savings intheir operations.

EXCEPTIONAL VERSATILITYAll Twist-LOK cartridges offer ex-

ceptional versatility by including, forinstance, an extensive listing of op-tional filter and coalescing combina-tions. These can be readily customizedby users to adapt to individual processapplications.

In a relatively short time, Twist-LOK’s two-stage phase separation –actual filter element in the first stagefor the “outside to inside” gas flowand coalescer element for the secondstage’s “inside to outside” gas flow –has changed how filtration pur-chasers view this type of product. In-stead of having to determine howcompetitive system components worktogether to accomplish the desiredtask, more and more companies havereadily taken to the Jonell motto:Quality filtration made simple.

Twist-LOK and many other indus-trial products, from gas and liquid fil-ters to filter vessel internals, aredesigned and manufactured by Breck-inridge, Texas-based Jonell, Inc.,which was founded in the 1980s ex-pressly to provide quality filter ele-ments to the oil and gas industry.Building on its continuing growth inthe filtration market, Jonell offers nu-merous filter options, both pleatedand depth style, in an equally largemedia selection that encompassesevery application and compatibility re-quirement in the oilfield.

STAGE 1 APPLICATIONFirst Stage elements in Twist-LOK

essentially pave the way for the Sec-ond Stage to operate most effectively.Through Stage 1 removal of solid andsemi-solid particulates and pre-coa-lesce liquids, Stage 2 functions withmaximum performance and minimalflow blockage over an extended pe-riod of time.

In Stage 1, media include Tri-DEPTM,micro-fiberglass, polyester, polypropy-lene, cellulose, cotton and the productis custom-engineered. Jonell’s trade-marked Tri-DEP media fiber extrusionprocess has proven the value of its fiberextrusion process. This unique processutilizes synthetic trilobal fibers, whichprovide increased void spaces for con-taminant retention whereas traditionalcircular fiber media are comparativelylacking in this respect. With real work-horse capabilities, Tri-DEP media’savailability in both polyester andpolypropylene provides exceptional me-chanical and chemical resistance in avariety of applications.

STAGE 2 APPLICATIONWith Stage 1 effectively clearing the

way, Stage 2 elements have been de-signed as ultra-high efficiency coa-lescers that consistently removesub-micron low-surface tension liquids.Similar to Stage 1, Jonell offers numer-ous high-efficiency Stage 2 coalescer el-ements; ideal for every application, theseare available in pleated, depth and cus-tom combination styles. In Stage 2, thecustom-engineered product's media in-clude Tri-DEP micro-fiberglass, polyester,polypropylene, cellulose and cotton.

IMPRESSIVE FEATURES/BENEFITSAs would be expected from a com-

pany with Jonell’s design and manu-facturing capabilities, features andbenefits of the Twist-LOK Filter Se-ries are many, built around its spe-cific design for Peach GeminiPuraSep installation. Among theforemost is that the system allows re-placement of first stage filter ele-ments without removing the secondstage coalescing elements from the



vessel. Along these lines, the systemalso allows wide-ranging combina-tions of cartridges for the ideal 3-partblend: filtration, coalescing anddrainage characteristics.

Additionally, with an importancebeyond its immediate task, Twist-LOK efficiently removes solid partic-ulates and liquid aerosols thusprotecting costly downstream equip-

ment. Carefully taking into accountany traditional filtration problems,Jonell designers also made three sig-nificant upgrades. First, the inte-grated solids shield now betterprevents any solids build-up behindthe gasket; this allows easier removalof elements.

The other two innovations are thenew Tri-DEP synthetic filters that

have much greater contaminant-hold-ing capability, and the new dust guardthat both provides extra strength andhelps prevent collapse of the elementand gasket sealing failure.

Further underscoring the unique-ness of Twist-LOK, the system is de-signed whereby the user can (1)customize cartridges in real-time and(2) most effectively pair filter/coa-


Twist-LOK elements, showing Second Stage Coalescer in thecenter, with two different variations of the First Stage Filterson either side.

Patent Pending Twist-LOK locking mechanism


lesce elements with specific processneeds. With all the attention to de-tail, it should also be no surprise thatdesigners re-invented the size of theunits for very practical and cost-sav-ing reasons. As a result, Twist-LOK’stwo-stage elements are shipped dis-assembled, which means that theshipping boxes are half the length oftraditional one-piece elements. Ship-ping costs are reduced and any po-

tential damages, which could occurduring shipping, are minimized.

LOOK TO FILTRATION’S FUTURE NOWWith decades of experience, Jonell

has become the one-source supplierfor the energy industry’sfiltration/separation requirements.Featuring an extensive line of originalsolutions, the company also manufac-tures the largest selection of OEM fil-

tration replacement products for oiland gas companies. Further enhanc-ing its reputation is the company’s in-novative dual-stage coalescingTwist-LOK Filter Series: the industry’snewest go-to filtration product fornatural and process gas.

For more information visit:www.jonellinc.com

FN


esin bonded cartridges are re-quired for the filtration ofhighly viscous fluids at high

differential pressures and/or elevated tem-peratures. In this article, the commercialprocesses to fabricate these cartridges arereviewed and the characteristics of the re-sultant filter cartridges are discussed. Inaddition, the manufacturing process andresultant structure of the state-of-the-artcompound layer resin bonded cartridge ispresented.

INTRODUCTIONHighly viscous fluids require filtration

at high differential pressures and/or ele-vated pressures. These high viscosity ap-plications include coatings, inks,polymers, and adhesives as well as nu-merous specialty applications. The diver-sity of these applications is suggested bythe list presented in Table I. Inspection ofthis table also indicates the broad rangeof chemical compatibilities needed.

Filter manufacturers have addressed

this demand for rigid filter elements bythe development of resin-bonded car-tridges. These cartridges are formed bythe impregnation of fibers, such as cellu-lose, polyester, acrylic, glass, etc., with athermosetting resin. Frequently usedthermosetting resins are water-based phe-nol formaldehyde condensation products,urea formaldehyde condensation prod-ucts, and melamines. Phenol formalde-hyde resins are preferred for cartridgesused in industrial processes. However,


Variables Impacting Resin Bonded Cartridge Manufacture and PerformanceBy Ron Fall, Sr. Principal Engineer, Parker Hannifin Corp. dh Process Filtration Div. NA

R

Manufacturer of silicone sealants often requires re-processing of their sealant batches, which did not meet their quality standards.Above photo shows two drums of 2M cPs, silicone sealant, compared to a standard product to one that has been rejected (insert).

melamine is required for FDA applica-tions. These resins not only coat the fibersconstituting the cartridge matrix but alsobond the fibers together. Therefore, thestrength and rigidity of the element is soincreased that it can resist deformation,compaction, and collapse at high temper-atures and/or elevated pressures.

Three processes are utilized com-mercially to manufacture resin-bondedcartridges. These processes are:

1. Winding of resin impregnated tow.2. Vacuum deposition of resin

impregnated fibers from an aqueous dispersion.

3. Rolling of resin impregnated mat.

In this paper, these three processesare reviewed and their influence on el-ement performance is discussed.

WOUND RESIN BONDED CARTRIDGE The technology to produce conven-

tional wound depth filter cartridges

was developed in the 1920s. In thisprocess, cartridges are produced by di-agonally winding precise patterns of

yarn on a center core. The pattern is de-signed to create hundreds of identical,tapered, spiral passageways. During the


winding, yarn is locked in place by suc-ceeding layers. Solid particles are re-moved by entrapment with the mediato yield efficient depth filtration. Byvarying the wind pattern, conventionalwound cartridges are fabricated to givea predetermined micrometer rating.Among the factors that impact rovingquality are the diameters of its con-stituent fibers, its weight, and its twist.

If tow fibers are impregnated with

a thermosetting resin prior to the op-eration, resin bonded cartridges canbe fabricated. This resin impregnationmay be achieved by spraying, rollcoating, or immersion. However, theimmersion process requires nip rollersto squeeze the excess resin from thetow. The element is then heat cured inan oven to form a resin-bonded car-tridge “log”. Upon removal of themandrel, the “log” can be cut into the

desired lengths.In addition to low cost resulting

from process simplicity and minimalcapital requirements, this process hasnumerous advantages. The overlappingof the tow during the winding opera-tion creates a rough, irregular surface.Consequently, the surface area of the el-ement is increased without the need forsubsequent grooving or grinding oper-ations that can generate surface debris.


The gel formulations within silicone sealants are called “gel balls”; they will cause bridging at the opening of the nozzle ofan applicator tip, which causes an inconsistent bead to be applied. Therefore, secondary processing is often required to ad-dress the removal of these formations.

In addition, the tow is composed offibers four to six inches in length. Con-sequently, media migration is signifi-cantly diminished.

However, the process for fabricationof wound resin bonded cartridges hasseveral deficiencies. The unidirectionallong fibers are oriented perpendicular tothe direction of flow. Therefore, it is notpossible to create convoluted pathswithin the interstitial fiber regions topromote particle entrapment. As a result,the relative cartridge performance is lessthan obtain ed from a cartridge fabricatedfrom randomly oriented long fibers.

Another disadvantage is that it is dif-ficult to impart a graded density struc-ture by winding. Therefore, the degreeof the depth filtration is a result of thewind pattern and fiber diameter than byany controlled alteration of the intersti-tial fiber void volume.

VACUUM DEPOSITION PROCESSIn the vacuum deposition process, a

porous, hollow mandrel is immersed intoa uniform aqueous dispersion of fibersand resin. Upon application of a vacuum,

resin-impregnated fibers accrete upon themandrel’s outer surface 1,2. The packing ofthe fibers upon the mandrel’s surface de-pends upon the amount of vacuum used(differential pressure) as well as the com-position and characteristics of the fibrousslurry. The degree of vacuum diminisheswith increasing distance from the man-drel’s surface. As a result, the interstitialfiber void volume increases with distancefrom the cartridge’s inner wall. Conse-quently, a graded density structure isformed. With this structure, smaller par-ticles can penetrate deeper in the cartridgeinterior prior to capture than can theirlarger counterparts. Therefore, cartridgeswith graded density structures exhibithigher dirt holding capacities and longerlives than do equivalently rated cartridgespossessing uniform fiber interstitial voidvolumes throughout their matrices.

Not only does the degree of vacuumdecrease radially with distance from themandrel’s surface, but it also decreases ax-ially. Consequently, the process is limitedto producing cartridges that are no morethan 10” in length. Therefore, in order tocreate longer cartridge assemblies, these

units must be joined either mechanicallyor by adhesive bonding. Both approachesinvite filter bypass, and unreacted adhe-sive constituents may be extracted fromthe assembly when it is operated in labilechemical environments.

Upon removal from the aqueous dis-persion, a water jet is used to removeexcess material from the outer surfaceof the nascent cartridge prior to theoven cure. This excess material is rein-troduced into the slurry to reduce rawmaterial costs as well as waste and itsassociated disposal costs.

The cured cartridges have a smoothouter surface. These cartridges are pre-ferred when maximum depth filtration isrequired and are especially effective whengels must be removed from the filtrate.These entities deform under pressure and,therefore, can penetrate pores smallerthan their unperturbed dimensions.

Grooving the cartridge increases thesurface area by 50 to 60%3. This increasedsurface area will increase the life of the fil-ter cartridge because the increased surfacearea can collect and retain a greateramount of the larger contaminant parti-


Cartridge | Filtration cles. Commercially, a series of circumfer-ential cuts is made into the cartridge.However, the cartridge may also beturned on a machine tool to produce aspiral groove on the outer surface.

However, grooves in the surface sub-stantially weaken the physical strengthof the filter. In addition, the operationcreates circular lands, i.e., the regionsthat are left between the grooves. Toomany grooves in a given length of thecartridge will leave lands that are notthick enough to support themselves orto resist minor blows without breaking.This is particularly true in filters inwhich the outer surface into which thegrooves are cut is comprised of rela-tively large fibers. These fibers have rel-atively few intersections at which theycan be bonded together by the resin.Consequently, these lands are more sus-ceptible to breakage.

In addition, the grooving processcreates particulate debris as well as al-

ters the surface structure of the filter.These minute particles often adhere tothe outer surface of the filter. Theirpresence is obvious. A common salestechnique is to tap a grooved cartridgeon a white sheet of paper placed on apotential customer’s desk. The appear-ance of the dark particulate debris isoften sufficient to convince theprospective buyer that selection of anon-grooved competitive cartridge isthe wiser choice.

One attempt to eliminate this sourceof media migration is to post-dip themachined cartridge in a resin bath tofurther saturate the outer surfaces 4. Al-though this process does fix the minuteparticles to the fiber matrix, it also al-ters the cartridge’s void volume andhence its performance. Therefore, thecure may be worse than the disease.Resin bonded filter cartridges are oper-ated with the flow direction from theoutside to the inside. Therefore, the

vast majority of these particles are re-moved from the filtrate as it passesthrough the cartridge matrix.

A less obvious and more sinistercontributor to media migration is theuse of short fibers, i.e., those less than1/2” in length. Short filters have fewerintersections or points of contact thando longer fibers. Therefore, they can bemore readily separated from the car-tridge matrix. Furthermore, they canexist anywhere within the element’sstructure. These particles do not haveto migrate through the entire cartridgeto contaminate the filtrate as do theparticles generated on the outer surfaceby the grooving operation.

This problem is particularly acute inresin-bonded cartridges produced bythe vacuum deposition process. Theaqueous dispersions are often preparedusing both chopped linters and re-claimed fiber. Although incorporationof linters and reclaimed fiber providessignificant manufacturing cost reduc-tions, the resultant cartridges exhibit ahigher degree of media migration thanequivalent cartridges produced by theother processes using higher-gradefibers. Neither can these cartridges bemarketed as “silicone free”, a necessityfor many coatings applications.

IMPREGNATED MAT PROCESSESIn this section, the processes used to

form fiber glass resin bonded car-tridges, and compound layer resinbonded cartridges are discussed.

Fiber Glass Resin Bonded Car-tridges:

In the process for producing fiberglass filter cartridges, molten glass is firstdrawn into thin glass fibers. These fibersare both extremely thin and uniform.The fibers are sprayed with an adhesivebinder as they are blown into a collec-tion chamber, in which the coated fibersare formed into uniform mats. Thesemats are then cut into sheets of prede-termined sizes to be rolled on a mandrelto form fiberglass tubes.

After the cartridges are cured in anoven, they are first ground to the re-quired outer diameter and subse-


quently grooved. In the final processsteps, the cartridges are cut to lengthand support cores are inserted prior tocovering with protective socks.

The use of the very fine glass fiberscombined with high void volume yieldsa cartridge that exhibits high dirt hold-ing capacity and long life. However, theresultant cartridge is also relatively soft.Therefore, the cartridge is susceptible todistortion, which can result in unload-ing. Consequently, its maximum oper-ating differential pressure is less thancompetitive resin bonded cartridges.

Furthermore, it is the only resinbonded cartridge that requires a core,usually metal, to provide support.

The combination of the fiberglassfibers and metal support core increasesthe costs of disposal. Unlike its poly-meric resin bonded competitors, fiberglass resin bonded cartridges cannot besimply incinerated.

Although the melt spinning ofmolten glass yields the long fibers thatare preferred for maximum cartridge ef-ficiency, these fibers are inherently brit-tle. Therefore, they are moresusceptible to breakage than are poly-meric fibers. Consequently, an outersock is used to protect the cartridgeduring handling as well as to preventthe penetration of broken, fiber glassparticles into the operator’s hands.

Parker Hannifin Corporation - Com-pound Layer Resin Bonded Filter Car-tridges: The ProBondTM cartridge wasdeveloped to circumvent the limitationsof previously described resin bondedcartridges described in the previous sec-tions. Yet, the advantages of a coreless,one-piece structure comprised of ran-domly oriented, mechanically andchemically interlocked long fibers in agraded-density matrix are maintained4.

The process begins when a needledmat is produced and impregnated withresin prior to cutting into sheets andwinding into a tubular element. The den-sity of this filter media is controlled bycompression rollers as the filter media isbeing wound around the mandrel. Con-sequently, the density of the tubular filterdecreases, i.e., becomes more porous, inthe radial direction from the inner surfaceto the outer surface. The final diameter isachieved by spirally or helically winding

a resin impregnated ribbon around thetubular inner filter. This outer filter mediaribbon is wrapped in a dual layer bymeans of a folding operation around theinner media such that the edges of adja-cent windings abut each other. Therefore,a continuous groove or channel is formedbetween adjacent windings of the outerfilter media ribbon.

The outer filter media ribbon is pre-pared from needled mat with moreporosity, i.e., less density, than is usedto form the inner tubular filter. There-fore, this layer functions as a pre-filterfor the enclosed tubular media. Afterthe oven cure, the resultant elementsare cut to length.

With grinding and grooving elimi-nated from the process, no particulatedebris is generated to adhere to theouter surfaces. Furthermore, the phys-ical strength is improved. Conse-quently, higher differential pressuresare tolerated to permit higher viscosityfluids to be filtered. Compound layerresin bonded cartridges, also, exhibithigher dirt holding capacities than theirgrooved counterparts.

CONCLUSIONSResin bonded cartridges are used for

filtration of viscous fluids at high differ-ential pressures and/or at elevated tem-peratures. Effective filtration is achievedby randomly oriented, mechanically andchemically interlocked long fibers in agraded density matrix. The filter car-tridge of choice is one that possesses sin-gle unit construction, a coreless center,and minimal particle shedding. Com-bined with high dirt holding capacityand ease of disposal, such cartridges re-duce the cost of filtration. All these de-sirable features are incorporated in thesilicone free compound layer resinbonded cartridge, the state-of-the-art inresin bonded cartridges.

REFERENCES1. L. E. Anderson, “Method of Making A Filter Ele-ment”, U. S. Patent 2,539,767, issued January 30,1951.2. L. E. Anderson, “Filter Element and Method ofMaking the Same”, U. S. Patent 2,539,768, issuedJanuary 30, 1951.3. R. N. Steensen, “Filter Cartridge and Method ofMaking the Same”, U. S. Patent 3,347,391, issuedOctober 17, 1967.4. R. E. Fall, M Jafarabadi, and J. M. Ruddock,“Compound Layer Resin Bonded Cartridge”, U. S.Patent 5,639,370, issued September 27, 1996.

FN



Company | News

uantachrome India will sup-port sales, marketing, andservice of Florida, USA-

based Quantachrome’s entire range ofparticle characterization instruments inIndia. With the rapid advancement ofmaterial science technology, research,and industry, the Indian market hasgrown to be one of Quantachrome’smost important overseas markets. Theestablishment of Quantachrome Indiawill strengthen Quantachrome’s positionin India for its core technologies of poresize analysis, pore structure analysis,surface density, surface area, water vaporsorption, and representative sampling.

Quantachrome’s surface characteri-zation technologies are critical in en-

abling advanced industries to developnew age materials, and characterize thesurface characteristics of existing pow-ders and porous materials. Industriessuch as petrochemical, chemical, cata-lyst, ceramics, carbon, polymers, en-ergy, pharmaceutical, food, paints,medical device, metal powders, agricul-ture, mining, and pigments, utilizeQuantachrome’s laboratory surfacecharacterization analyzers to help themunderstand how a porous or powderedmaterial’s surface properties influencetheir performance attributes.

Over the last ten years, India has wit-nessed a rapid advancement in both re-search and industrial production in areasthat benefit from Quantachrome’s family

of material characterization instrumen-tation. This has resulted in the rapidgrowth of the Indian market for surfacecharacterization instrumentation.

Quantachrome India willstrengthen the support of existing cus-tomers in India, as well as allow it tomore closely support new customers.Quantachrome India has been staffedby individuals with an average of 10years of experience in selling and sup-porting Quantachrome’s surface areaand porosity analyzers.

Quantachrome’s Director of Interna-tional Sales, Jeff Dixon commented:

“We are very pleased to put in placethe infrastructure and resources thatwill allow us to support the growth ofthe surface characterization market inIndia in the coming years. Quan-tachrome prides itself on providing su-perior local sales and technical supportfor our laboratory instrumentation.Due to the unparalleled combined ex-perience of the management staff ofQuantachrome India with our prod-ucts, applications and technologies, weare confident that they will be able toprovide superior support to our exist-ing and new customers in India.”

Quantachrome India succeededQuantachrome Instruments’ now for-mer partner, Blue Star Limited, on July10, 2013.

For 45 years, Quantachrome’s scien-tists and engineers have revolutionizedmeasurement techniques and designedinstrumentation to enable the accurate,precise, and reliable characterization ofpowdered and porous materials. Thecompany has an unwavering commit-ment to providing state of the art tech-nology, and unparalleled superiorcustomer service and support.

For more information contact: Quantachrome InstrumentsWebsite: www.quantachrome.com

Quantachrome to Open Facility in IndiaBy Ken Norberg, Editor

FN

Q

2014BuyERS’

GuIdE

I N T E R N A T I O N A L

FILTRATION NEWS


Activated Carbon .........................................36 PACS .....................................................36

Adhesive/Fluid Dispens. Equip. ................36Ashby Cross Co. ...................................36DOPAG US Ltd .....................................36Epic Resins............................................36EXACT Dispensing Systems .................36Franklin Adhesives & Polymers ...........36 Nordson Corporation ...........................36Nordson SEALANT EQUIPMENT........36

Advertising & Promotion............................36FILTERPEDIA.......................................36

Air Filters & Media.................................36-37 Air Filters Inc........................................36APC Filtration Inc.................................36 Koch Filter Corp..............................36-37

Air Filtration Equipment .............................37 Chase Machine & Engineering, Inc......37 Filtration Technology Systems..............37 Genuine Machine Design, Inc. .............37

Air Filtration & Media.................................37 APEL International Inc. ........................37

Bag & Filter Systems...................................37Rosedale Products, Inc..........................37

Cabin Filter Production Line .....................37 A2Z Filtration Specialities ...................37

Cartridge Filters......................................37-38APC Filtration Inc. ...............................37 APEL International Inc. .......................37 G. Bopp USA Inc. .................................37Clack Corporation ...............................37 Enpress LLC .........................................37FilterCor Inc. .......................................38 Global Filter Corporation ....................38 Graver Technologies ............................38Harmsco Filtration Products ................38 Koch Filter Corp. .................................38 Maverick Manufacturing & Filters .......38Rosedale Products, Inc. ........................38

Cartridge Filtration ......................................38 APEL International Inc. .......................38 Delta Pure Filtration ............................38 Enpress LLC .........................................38Rosedale Products, Inc. ........................38

Center Cores .................................................39Conwed Global Netting Solutions .......39 DelStar Technologies, Inc. ...................39Industrial Netting ................................39

Centrifuges ...................................................39Sefar Inc. ..............................................39

Coalescers ...................................................39 SpinTek Filtration, Inc. ........................39

Compressed Air & Vacuum Filt. ...............39 Walker Filtration Inc. ..........................39

Consulting Services ..............................39-40Edward C. Gregor & Associates ..........39Joseph Marketing .................................40World Recruiters ..................................40

Contract Pleating.........................................40 APEL International Inc. .......................40 JCEM USA ............................................40

Education .....................................................40American Filtration Society .................40

End Caps .......................................................40 DelStar Technologies, Inc. ...................40

Engineering ServicesDesign/Build .........................................40-41

A2Z Filtration Specialities ....................40Filtration Technology Systems..............40Sigma Design ........................................40SpinTek Filtration Inc. ..........................41

Epoxies, Urethanes .....................................41Epic Resins............................................41Innovative Resin Systems, Inc. .............41

Expanded Metal...........................................41Barbron Corporation.............................41Dexmet Corporation.............................41

Fabric Filter Bags ........................................41Rosedale Products, Inc..........................41

Fabrics Suppliers.........................................41Dodenhoff Industrial Textiles, Inc. .......41Mid Atlantic Industrial Textiles Inc. .....41Sefar Inc. ...............................................41

Felts................................................................41Rosedale Products, Inc..........................41

Filter Bag/Housing.......................................42Filter Technology Incorporated ............42Harmsco Filtration Products.................42Rosedale Products, Inc..........................42

Filter Bags/Liquid ........................................42Filter Technology Incorporated ............42Rosedale Products, Inc..........................42

Filter Cans .....................................................42 Metcom Inc. ..........................................42

Filter Caps .....................................................42 Ashby Cross Co. ...................................42DelStar Technologies, Inc. ....................42EXACT Dispensing Systems .................42Metcom Inc. ..........................................42

Filter Caps & Components.....................42-43A2Z Filtration Specialities................42-43

Filter Cartridge Housings ...........................43FilterCor Inc. ........................................43

Filter Cleaning..............................................43APEL International Inc. ........................43

Filter Cloth.....................................................43Outotec (USA) Inc ................................43Sefar Inc. ...............................................43Unique Wire Weaving Co., Inc. ............43

Filter Elements.........................................43-44APEL International Inc. ........................43 Barbron Corporation.............................43Clack Corporation ................................43FilterMart..............................................43Graver Technologies .............................43Harmsco Filtration Products.................43Keystone Filtration Solutions ...............44Reserve Filter Systems ..........................44Rosedale Products, Inc..........................44

Filter Housings .............................................44Custom Service & Design, Inc..............44Enpress LLC..........................................44Global Filter, LLC .................................44Graver Technologies .............................44Keystone Filtration Solutions ...............44Rosedale Products, Inc..........................44

Filter Manufacturing Automation.........44-45EXACT Dispensing Systems .................44Nordson Corporation ...........................44Nordson SEALANT EQUIPMENT...44-45

Filter Manufacturer.................................45-46Air Filters, Inc.......................................45APC Filtration Inc.................................45APEL International Inc. ........................45Custom Filter LLC................................45FilterCor Inc. ........................................45Filter Technology Inc. ...........................45Flow Ezy Filters, Inc.............................45Global Filter Corporation .....................45Gusmer Enterprises, Inc. ......................45Koch Filter Corporation .......................45Komline-Sanderson...............................45Rosedale Products, Inc..........................45United Filters International ..................46World Recruiters...................................46

Filter Manufacturing ...................................46AG Industries........................................46APC Filtration Inc.................................46APEL International Inc. ........................46Cim-Tek Filtration. ...............................46FilterMart Corporation .........................46Rosedale Products, Inc..........................46

Filter Media..............................................46-47Ahlstrom Filtration ...............................46G. Bopp USA Inc. ..................................46DelStar Technologies, Inc. ....................46Dexmet Corporation.............................47Dodenhoff Industrial Textiles, Inc. .......47Gusmer Enterprises, Inc. ......................47Hollingsworth & Vose Co.....................47Membrana GmbH .................................47Phifer Incorporated...............................47Prab Fluid Filtration .............................47Sefar Inc. ...............................................47

Filter Presses................................................47Outotec (USA) Inc. ...............................47

Filter Products..............................................47APC Filtration Inc.................................47Gusmer Enterprises, Inc. ......................47Rosedale Products, Inc..........................47

Filter Replacement ......................................48Global Filter Corporation .....................48

Filter Shells...................................................48Metcom Inc. ..........................................48

Filter Testing.................................................48Air Techniques International ................48APC Filtration Inc.................................48IBR Laboratories ...................................48Outotec (USA) Inc. ...............................48Porous Materials Inc. ............................48

Filter Testing Equipment.............................48Air Techniques International ................48IFTS Filter Testing Equipment..............48

Filter Ultrasonic Seal. & Die Cutting........48Custom Filter LLC................................48

Filter Winding Machinery..........................49Maverick Manufacturing & Filters .......49

Filters .............................................................49SpinTek Filtration .................................49

Filters Automatic .........................................49Rosedale Products, Inc..........................49VAF Filtration Systems .........................49

directory Index


Filters Automotive .......................................49Ashby Cross Company..........................49Rosedale Products, Inc..........................49

Filters & Strainers .......................................49Custom Service & Design, Inc..............49Orival Inc. Water Filters .......................49Rosedale Products, Inc..........................49

Filtration Components............................49-50Conwed Global Netting Solutions ........49DelStar Technologies, Inc. ....................50Industrial Netting .................................50

Filtration Systems...................................50-51Chase Machine & Engineering Inc.......50Enpress LLC..........................................50Harmsco Filtration Products.................50Keystone Filtration Solutions ...............50Orival Inc. Water Filters .......................50Outotec (USA) Inc. ...............................50Parker Hannifin Racor Division............50Prab Fluid Filtration .............................50Rosedale Products, Inc..........................50United Filters International ..................51

Fuel & Oil Filter Testing..............................51IBR Laboratories ...................................51

Glue Machines.............................................51Ashby Cross Company..........................51EXACT Dispensing Systems .................51Nordson Corporation ...........................51Nordson SEALANT EQUIPMENT........51Potdevin Glue Machine Co...................51

Laminating Machinery................................51Filtration Technology Systems..............51

Laser Cutting.................................................51Metcom Inc. ..........................................51

Liquid Adhesive/Sealants For Filter Applications....................................51

Epic Resins............................................51EXACT Dispensing Systems .................51

Liquid Filtration............................................52G. Bopp USA .........................................52Custom Services & Design, Inc. ...........52Enpress LLC..........................................52FilterCor Inc. ........................................52Filter Technology Incorporated ............52 Global Filter LLC..................................52Graver Technologies .............................52Gusmer Enterprises, Inc. ......................52Membrana GmbH .................................52Rosedale Products, Inc..........................52

Magnetic Separation.............................52-53Magnetool, Inc. .....................................52Prab Fluid Filtration .............................53

Media Fabrics Woven.................................53Dodenhoff Industrial Textiles, Inc. .......53Sefar Inc. ...............................................53

Membrane-Filtration Systems...................53Membrane Specialists LLC....................53

Membranes...................................................53Chase Machine & Engineering Inc.......53Dexmet Corporation.............................53Enpress LLC..........................................53Membrana GmbH .................................53

Mergers & Acquisitions .............................54GL Capital, LLC....................................54

Metal Expander............................................54A2Z Filtration Specialities ....................54

Metal/Steel Components............................54DelStar Technologies, Inc. ....................54

Meter, Mix, Dispense Equipment .............54Ashby Cross Company..........................54

DOPAG US Ltd. ....................................54EXACT Dispensing Systems .................54Nordson Corporation ...........................54Nordson SEALANT EQUIPMENT........54

Mini Pleat......................................................54A2Z Filtration Specialities ....................54

Netting......................................................54-55Conwed Global .....................................54DelStar Technologies, Inc. ....................55Industrial Netting .................................55

Non-Woven: Fluoropolymer.......................55Cable Components Group (CCG) ........55

Nonwovens...................................................55DelStar Technologies, Inc. ....................55

Perforating Products...................................55Metalex .................................................55

Perforated Tubes.....................................55-56Beverlin Mfg. Co. ..................................55Perforated Tubes, Inc. ...........................56

Perforating – Custom ..................................56VACCO Industries ................................56

Plastic Filtration Components...................56DelStar Technologies, Inc. ....................56Industrial Netting .................................56

Plastic Netting & Tubing ............................56Conwed Global Netting Solutions ........56DelStar Technologies, Inc. ....................56Industrial Netting .................................56

Pleated Filters ..............................................56FilterCor Inc. ........................................56

Pleaters, Blade Type ...................................56JCEM USA.............................................56

Pleating Custom ..............................................57Croybilt™ .............................................57Custom Filter LLC................................57FilterCor Inc. ........................................57JCEM USA.............................................57Keystone Filtration Solutions ...............57

Pleating Machinery.....................................57A2Z Filtration Specialities ....................57Croybilt™ .............................................57Filtration Technology Systems..............57JCEM USA.............................................57Schmid Corporation .............................57WESMAX Custom Machinery Inc. .......57

Pleating Scoring ..........................................58Croybilt™ .............................................58 JCEM USA.............................................58

Pleaters Rotary Type ...................................58A2Z Filtration Specialities ....................58

Pore Size Measurement .............................58IBR Laboratories ...................................58Porous Materials Inc. ............................58Quantachrome Instruments..................58

Reverse Osmosis Equipment .....................58Enpress LLC..........................................58

Reverse Osmosis Pre-Filtration ................58Delta Pure Filtration .............................58Global Filter LLC..................................58

Rewinders.....................................................58Elsner Engineering Works, Inc. ............58

Separators.....................................................59Rosedale Products, Inc..........................59SpinTek Filtration, Inc. .........................59

Strainer In-Line ............................................59Orival Inc. Water Filters .......................59

Rosedale Products, Inc..........................59

Testing Eng....................................................59APC Filtration Inc.................................59IBR Laboratories ...................................59

Testing Filtration/Laboratory .....................59IFTS Liquid Filter Testing Services .......59

Ultrafiltration Membranes .........................59Enpress LLC..........................................59Membrana GmbH .................................59

Ultrasonic Bonding.................................59-60Chase Machine & Engineering Inc..59-60Herrmann Ultrasonics...........................60Sonobond Ultrasonics...........................60

Ultrasonic Custom Machinery Building .................................60

Chase Machine & Engineering Inc.......60

Urethane Dispensing Equipment ..............60Ashby Cross Company..........................60EXACT Dispensing Systems .................60Nordson Corporation ...........................60Nordson SEALANT EQUIPMENT........60

Used Pleaters ...............................................60Croybilt™ .............................................60

Water Filtration.......................................60-61FilterCor Inc. ........................................60Global Filter LLC..................................60Graver Technologies .............................61Keystone Filtration Solutions ...............61Membrana GmbH .................................61Orival Inc. Water Filters .......................61Rosedale Products, Inc..........................61VAF Filtration Systems, LTD ................61

Water Testing ...............................................61Enpress LLC..........................................61

Wire Mesh ....................................................61G. Bopp USA Inc. ..................................61W.S. Tyler ..............................................61

Wound Cartridge Machinery.....................62Maverick Manufacturing & Filters .......62

Woven Fabrics Wire ...................................62G. Bopp USA Inc. ..................................62Phifer Incorporated...............................62Phoenix Wire Cloth, Inc. ......................62Unique Wire Weaving Co., Inc. ............62W.S. Tyler ..............................................62

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