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PLEATED BAG FILTERSfeaturing ProPulse® Technology
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Typical Air Handling Capacities
PROVEN TECHNOLOGY FOR IMPROVED PERFORMANCEKeep your bag house dust collectors running efficiently and energy smart with high-quality pleated bag filters from United Air Specialists. Developed to replace traditional filter bags and cages, each pleated bag filter has a one-piece construction design which allows it to be used in new systems or as a simple retrofit in existing bag house equipment for improved system performance. The one-piece design also significantly reduces installation time making changeouts easier.
Pleated bag filters offer up to 2-3 times the filter life over traditional 16 oz. polyester felt bags and provide almost twice as much filtration area in existing equipment due to increased media in the pleat pack design. This increased filter area causes the air-to-media ratio to decrease when the airflow stays the same, dramatically increasing filtration efficiency while operating at significantly lower differential pressures. Pleated bag filters are shorter than standard fabric bags which allows for larger drop out area and less opportunity for bag abrasion. The filter’s urethane banding retention system ensures consistent pleat spacing, which results in enhanced cleaning and extended filter life.
INCREASED FILTRATION CAPACITYWith today’s tighter emissions limits and increased production demands, it is essential to gain improved performance from your industrial air filtration systems. Pleated bag filters offer more filtration media than traditional felt bags increasing the filtration surface area and thus the filtration capacity. As shown in the illustration, a 6.6 ft. long (2.0 m) pleated bag filter contains as much filtration media area as three (3) traditional felt bags 12 ft. long (3.6 m). This significant increase in available filtration area can be gained by retrofitting your existing traditional bag house systems with pleated bag filters. Use of pleated bag filters instead of traditional felt bags will also dramatically reduce the system’s differential pressure and air-to-media ratio (AMR) thereby improving airflow, reducing the number of filter cleaning cycles and improving the dust collector system’s overall performance.
THE IDEAL FILTER SOLUTION
FOR NEW SYSTEMS OR TO RETROFIT
EXISTING EQUIPMENT
178 CMH105 CFM3.5:1 AMR
1.0 m2.8 m² 1.5 m
3.8 m² 2.0 m5.5 m²
3.0 m1.5 m² 3.6 m
1.8 m²4.2 m2.1 m²
244 CMH144 CFM3.5:1 AMR
351 CMH206 CFM3.5:1 AMR
177 CMH104 CFM6.5:1 AMR
213 CMH125 CFM6.5:1 AMR
248 CMH146 CFM6.5:1 AMR
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3.0 m1.5 m
AIR
3.6 m1.8 m
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4.2 m2.1 m²
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4
Pleated Bag Filters Traditional Felt Bags
www.uasinc.com
System Improvements Operational Benefits Customer Value
Increased filtration media efficiency Less dust passes through the filter Improved air quality and reduced dust emissions
2-3X filtration media surface area per filter Increases filter capacity Longer filter life
Surface loading media Dust remains on surface of media enabling improved cleaning resulting in fewer cleaning cycles
Longer filter life
Shorter more compact filters reduce inlet abrasion and provide larger drop out area under filters
Large particles and heavier dust loads drop out prior to reaching filters
Longer filter life
Easy installation due to compact size and one-piece filter construction
Speeds removal and installation time of replacement filters
Reduced maintenance cost
Easier pulse cleaning and reduced quantity of cleaning cycles
Reduces outlet emissions and decreases compressed air usage
Improved air quality and decreased operational cost
Lower initial and operating pressure drop Less resistance through the filters which reduces the energy required to operate the system
Decreased system operational cost
THE PLEATED BAG ADVANTAGEThere are many inherent problems with traditional 16 oz. polyester felt bags. Instead of costly rebuild or replacement of your existing bag house system, UAS offers the proven performance, durability and advantage of pleated bag filters.
HIGH-QUALITY FILTER MANUFACTURING With more than 75 years of expertise in manufacturing filters, our commitment to quality shows in every filter we make. Our advanced research, design, engineering and testing facilities allow us to remain on the leading edge of innovation.
Utilizing state-of-the-art production processes, we build and inspect every filter to ensure the highest quality is achieved to meet the performance requirements of your application. We manufacture our filters to fit nearly any OEM style of bag house. No matter what brand of bag house you have, our knowledgeable and experienced application specialists, field-based manufacturer’s representatives and customer service associates are ready to assist you to select the right filter.
Retrofit Bag House Systems with Pleated Bag Filters
Filter Media 0.3 – 1 µm 1 – 3 µm 3 – 10 µm
ePTFE Excellent Excellent Excellent
Spunbond Polyester Poor / Fair Fair / Excellent Excellent
16 oz. Polyester Felt Poor Poor / Fair Fair
Filter Media Efficiency Characteristics
SPUNBOND MEDIA & ePTFE MEMBRANESpunbond media is created by layering fine denier fibers from multiple spinning heads onto a moving mat. The depth of the fibers is then calendared under heat and pressure and the calendaring of the fibers results in the resistance of penetration into the media.
ePTFE (expanded polytetrafluoruethylene) membrane technology is a fine surface layer that features bonded PTFE fibers laminated onto a filter media substrate. The layer is created by stretching a PTFE membrane bi-directionally resulting in fiber diameters ranging between 50 and 500 nanometers (nm). This membrane is then laminated to the filter media substrate using heat and pressure. ePTFE membranes are applied to spunbond polyester media substrates when used in dust collector applications. Since the PTFE membrane is slick, bag cleaning is more complete with less energy.
THE VALUE OF ePTFE FILTERSePTFE filters have wide pleat spacing, strong resistance to moisture and good release characteristics, which make them an ideal choice for hygroscopic or agglomerative dusts, such as dusts produced during the processing of sugar, flour and chemicals. The moisture resistance associate with ePTFE is a clear advantage over nanofiber, spunbond and polyester felt solutions.
ePTFE is the superior choice versus spunbond media or spunbond nanofiber for bag house applications. ePTFE filters achieve a higher Minimum Efficiency Reporting Value (MERV) rating than spunbond substrate with nanofiber layer. This means that, once out of the box, ePTFE filters will be able to collect a higher percentage of submicron particulate than spunbond nanofiber technology. ePTFE media also offers superior filtration to traditional 16 oz. polyester felt which is only fairly effective at capturing particulate at the 3-10 micron level.
SEE THE DIFFERENCE
16 oz. Polyester Felt at 600X magnification
Spunbond Polyesterat 600X magnification
ePTFE at 600X magnification
* ePTFE results in over 85% less outlet emissions compared to 16 oz. polyester felt based on mean particle size of 0.5 microns.
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SURFACE LOADING EXCELS OVER DEPTH LOADINGProPulse® ePTFE pleated bag filters collect particulate on the surface of the membrane which results in a filter that is more easily cleaned. Because dust accumulates on the surface, rather than within the media depth, less energy is required to dislodge the particulate from the media’s surface. This significantly reduces the number of cleaning cycles required to maintain a pressure drop, which results in less compressed air usage, lower emissions and extended filter life.
Conventional filter bags collect particulate in the depth of the fabric, making them more difficult to clean. Unlike ProPulse pleated bag filters with ePTFE filter media, commodity depth loading filters have large spaces or pores within their base media fibers which allow particles to penetrate deep within the media substrate increasing pressure drop. Subsequently, conventional filter bags plug at a faster rate requiring more frequent cleaning which leads to increased abrasion and wear, lower efficiency and reduced filter life.
IMPROVED PERFORMANCE USING ePTFE MEMBRANE MEDIA
Value of ePTFE Membrane Media• Longer filter life resulting in
fewer changeouts
• Lower pressure drop
• Improved filter cleanability
• Less energy usage to operate the system over the life of the filters
• Less system maintenance costs
Surface media loadedwith ISO fine test dust
Commodity media loadedwith ISO fine test dust
Value of ePTFE Membrane Media
Normal Bag Changeout
Increased Airflow
Uncontrolled Steady Pressure Rise
Extended Filter Life
TIME
∆P
16 oz. Polyester Felt
ePTFE Membrane
Filter Media Special Characteristics Efficiency Rating* **
Surface-Loading
Capability
Maximum Operating
Temperature
Thermally-fused Spunbond Polyester with High-efficiency ePTFE Membrane
High-strength media with ePTFE membrane provides excellent particle release. Also repels water while allowing air and moisture vapor to pass through the membrane’s extremely small spaces.
MERV 16 EN 779- F9
Excellent 212° F / 100° Cor
275° F / 135° C
Thermally-fused Carbon Impregnated Spunbond Polyester with High-efficiency ePTFE Membrane
Same as thermally-fused spunbond polyester with high-efficiency ePTFE membrane with the added benefit of conductive properties.
MERV 16EN 779- F9
Excellent 212° F / 100° Cor
275° F / 135° C
Spunbond Polyester High-strength media with average particle release characteristics and wide pleat spacing.
MERV 11EN 779- F6
Average 212° F / 100° Cor
275° F / 135° C
Spunbond Polyester with Hydro-oleophobic Treatment
2% Teflon applied to plain spunbond polyester for improved resistance to moisture and dust of an oily nature with improved cake release.
MERV 11EN 779- F6
Average 212° F / 100° Cor
275° F / 135° C
SELECTING THE RIGHT FILTER CONFIGURATION
Filter Media Options
* MERV (Minimum Efficiency Reporting Value) has been determined using ASHRAE 52.2 test standards ** European efficiency rating based on European standard EN 779
Tops Bottoms Inner Cores
Flexible Polyurethane for Top- and Bottom-Load Styles
Galvanized or Stainless Steel (top load style only) —Installed with Snap Ring
(White available for food grade applications)
Flexible Polyurethane Puck
Galvanized or Stainless Steel Pan
Polypropylene Expanded Galvanized
Steel or Stainless Steel
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Abrasion Resistance
Chemical Tolerance
Applications Industries/Dust Types
Excellent Excellent Applications demanding ultra-high efficiencies or difficult dust cake release. Highly recommended for chemical, food and industrial processing when product contamination must be minimized. Excellent performance on fine particulate, moist, hygroscopic or agglomerative dust.
Asbestos, Chemical processing, Fluidized bed dryers, Food processing (Flour, Starch, Sugar, Whey), Pesticides, Pharmaceutical
Excellent Excellent Applications where conveyed dust may generate static charges that require dissipation. Can be used in explosive dust applications to lessen the risk of ignition sources due to static electricity discharges.
Chemical processing, Coal, Food processing, General industrial, Pharmaceutical, Plastics, Powdered materials
Excellent Excellent Applications where high-strength, moisture-resistant media and good release characteristics are necessary. Recommended when product contamination must be minimized.
Cardboard, Cement, Ceramics, Cotton, Fiberglass, Gypsum, Lime, Paper, Polishing, Powder coating, Rubber grinding, Shot blast, Tobacco
Excellent Excellent Applications where high-strength, moisture-resistant media and difficult dust cake release characteristics are necessary. Excellent performance on hygroscopic or agglomerative dust.
Cement, Grinding with rouge or coolant, Gypsum, Lime, Rubber grinding, Tobacco
CONFIGURED TO MEET YOUR NEEDS
Snap Ring• Ensures easy and
secure fit for top-load collectors and for oval filters
One-Piece Construction• One-piece filter and cage
design significantly reduces installation time
• Custom diameters available
Filter Media• ProPulse® ePTFE
membrane technology outperforms other spunbond products
• Longer life
• Higher efficiency
• Lower operating pressure drop
• Washable
• Temperatures up to 275° F / 135° C (Higher temperature media available)
Molded Urethane Top Construction• Unique, one-piece molded design for
top-load collectors eliminates potential leakage point at the tube sheet
• Soft polyurethane boot installs easily on bottom-load applications and helps resist abrasive wear
Grounding Strap• Dissipates static electricity build up
Pleat Pack• Pleated media increases effective
area without adding more equipment
• Uniform pleat spacing enhances cleaning
• Custom pleat spacing available
Banding• Superior urethane attachment method
anchors pleat tips for even spacing
TOP LOAD BOTTOM LOAD
OVAL DESIGN
UAS CHINA7336 Minzhu East Street
Economic Development ZoneWeifang, Shandong 261031
ChinaPh: +86-021-62370052
E-mail: [email protected]
UAS GERMANYOtto-Hahn-Strasse 6
D-65520 Bad CambergGermany
Ph: +49-6434-94220E-mail: [email protected]
www.uas-inc.de
UAS UKPO Box 17Folly Lane
Warrington, CheshireEngland WA5 0NP
Ph: +44-1925-654321E-mail: [email protected]
www.uasuk.com
UAS HEADQUARTERS - USA4440 Creek Road
Cincinnati, Ohio 45242Ph: 513-891-04001-800-252-4647
E-mail: [email protected]
UAS, Inc. reserves the right to change design or specifications without notice. IND-PleatedBags-0313
WHY CHOOSE UNITED AIR SPECIALISTS?
A world-renowned reputation. For more than 45 years, we’ve been an industry leader in air quality technology—a proven track record that speaks for itself.
Commitment to quality products. Measuring our quality against documented expectations, we practice continuous improvement methods to anticipate challenges and implement successful solutions.
Unparalleled customer support. As a customer-driven solutions provider, we earn credibility and establish successful relationships by exceeding expectations for professional service and attitude.
Innovative technical leadership. Always, we keep technology at the forefront—ensuring continuous product advancements through ongoing investments in design and manufacturing.
