Product description
OVER-THE-TOP® DESIGN FILTER HOUSINGS
The Over-The-Top® Housing Design, featured on all Filtration Systems vessels, maximizes filtration performance by preventing bypass of unfiltered liquid. When the vessel is closed, the machined face of the lid compresses the top of the Zero-Bypass® or PurSeal® bag collar, forming an absolute seal. As there is no “dead space” between the top of the collar and the housing lid, unfiltered liquid cannot accumulate in the housing, eliminating clean-up of the vessel interior during change-out. The used filter bag or element, containing filtered solids, is simply removed and replaced.
FILTRATION SYSTEMS FILTER BAG FEATURES
Fully Welded Construction
Ultrasonically welded seams prevent solids, larger than the micron rating of the media, from bypassing the Filter Bag. Conventional Filter Bags are sewn, allowing particles to bypass through the needle holes of seams.
TruSeam™ Technology
TruSeam™ Technology provides a fully finished longitudinal seam with no rough edges.
Zero-Bypass® Bag Collar
The Zero-Bypass Collar provides an optimum compression seal, when used in a Filtration Systems Filter Vessel. When the Filter Bag is under elevated pressure, the flanged Bag Collar prevents bypass of unfiltered liquid.
PurSeal® Flanged Bag Collar
The PurSeal® flange provides a hydrostatic compression seal when used on our Over-The-Top® design housings, eliminating bypass of unfiltered liquid downstream.
Graded-Density, Composite Layer Design Technology™
Individual layers of absolute rated media, sequenced in a proprietary array, are ultrasonically laminated and constructed with patented techniques that form our high-performance filter bags. Final layers of dense media on the downstream side, preceded by higher lofted upstream layers, having high void volume, achieve an ideal balance of dirt-holding capacity, efficiency and mechanical strength.
IP Series-Integrated Polymeric Support® and Delta-P Insert (DP)
A structural layer, ultrasonically laminated within the internal composite of the filter, allows the bag to sustain significantly greater differential pressure before change-out is required, without increasing initial pressure drop. Longer run times allow enhanced solids loading. IP is a standard feature on Ultrafit 100, Ultrafit 500, Ultrafit 500 EXP, 800 Series, and Accufit Welded Filter Bags.
EXP® Series
The EXP filter bag is comprised of multiple layers of the same micron rated filter media, exponentially increasing the efficiency and performance ratings of the Ultrafit Welded High Performance Liquid Filter Bag. The use of redundant layers of the same porosity makes the EXP bag ideally suited for use as a final or polishing filter, when precise, sub-micron retention is required. IP- Integrated Polymeric Support™ is a standard feature of Ultrafit EXP Filter Bag. EXP Series is available in the Ultrafit 500 and Ultrafit 800 sub-micron rated filter bags.
FILTER MEDIA TEXTILE COMPONENTS
Meltblown Microfiber Filter Media
The meltblown production method generates fine fibers, with precise diameters, extruded from molten polymer resin. Uniform diameter fibers, with controlled web formation, accurately establish the porosity of the filter media. These microfibers are thermally bonded to each other, and then calendered into layers, forming a non-woven web. This web, having high void volume, is capable of capturing large amounts of solids. The bonding process prevents fiber migration and creates a fixed pore structure, adding Mechanical strength. Filtration occurs by deposition of particles throughout the depth of the media; as a result, microfiber cannot be washed or reused. Filtration Systems offers Ultrafit Welded Polypropylene and Nylon microfiber filter bags, manufactured with 100% FDA compliant materials. Disposable, single-use bags are available in absolute ratings of .2 to 200 micron, with efficiencies of 97% to 99.98%.
Thermally Bonded Continuous Filament
A non-woven filter media fabricated from filaments that are formed, extruded and thermally bonded. This production method yields finer fiber diameters controlling the apertures that more accurately establish porosity. The resulting filter fabric has greater flexibility and tensile strength. Filtration Systems offers Accufit Welded SuperBond filter bags in Polypropylene or Nylon materials; in ratings from 1 to 100 Micron with 90% efficiency ratings.
Needled Felt Filter Media
A filter media constructed of interlocking fibers, mechanically bound to a web. Needled felt features a three-dimensional porous structure, creating a medium having high flow rate, solids loading, and depth filtration characteristics. Filtration occurs by capturing particles throughout the depth of the media; as a result, needled felt cannot be washed or reused. Needled felt is the most commonly used non-woven fabric for liquid filtration. Our polypropylene felt is not registered as FDA compliant, as it is manufactured with needles on a loom, requiring lubrication. Filtration Systems offers Accufit Welded polypropylene felt filter bags, in a nominal micron range of 1-200, with efficiency ratings of 60% to 70%.