pleated filter bags are manufactured from the same polypropylene or
polyester needle felt material which
DURAGAF filter bags are
made from and they are formed into a pleated cylinder to
maximize surface area. MAX-LOAD filter bags have the
greatest amount of surface area of any filter bag and they
are used for minimizing the frequency of filter bag
replacements. Reduced the frequency of change-outs
also reduces labor costs, exposure to liquid and the
quantity of filter bags to be inventoried and disposed.
pleated filter bags are manufactured from
silicon-free fibers under ISO 9001:2015 quality control standards to
ensure consistent performance.
Surface Area Comparison of #2 size filter bags
SNAP-RING, UNIBAG, SENTINEL & DURAGAF : 5.2 SQFT
HAYFLOW: 7.5 SQFT
MAX-LOAD: 17.2 SQFT
Filter Bag Design
Coreless MAX-LOAD Filter Bag Design
The standard MAX-LOAD filter bag has an internal core made of the same material as the DURAGAF filter bag (polypropylene or polyester) which undergoes a treatment process virtually eliminating potential of fiber migration while remaining free from silicone and other crater-forming substances.
All seams and connections to the sealing ring are thermo bonded (welded) to maximize the durability of the MAX-LOAD filter bag. The internal core provides support akin to a filter bag positioner, protecting the filter bag form downstream pressure pulses often related to higher system pressures. MAX-LOAD pleated filter bags utilize a flexible crush ring seal to form both a chemically resistant and bypass-free seal which improves as the differential pressure increases. The sealing ring has integrally molded handles to simplify removal from the vessel. and due to a special surface. MAX-LOAD filter bags are provide for both #1 and #2 size filter bag vessels.
The coreless version of MAX-LOAD filter bags have the look and feel of a filter cartridge however the flow path remains from inside-to-outside and thus particles are retained when removing the filter bag from the vessel. Unlike the other MAX-LOAD filter bags, the coreless version is made from polypropylene or polyester melt-blown materials; the same materials used for our absolute rated filter bags CLEARGAF, ACCUGAF and PROGAF. They are constructed of multiple layers, each graded for increasingly fine particle retention, resulting in a wall thickness of about 0.7". They are available with a 10 micron nylon monofilament mesh cover for fiber sensitive applications.
Why Go Coreless?
Whereas MAX-LOAD pleated filter bags maximize filter area to decrease filter bag change-out frequency, the coreless version only has 82% less surface area (even less surface area then a standard filter bag), so they are used:
Coreless MAX-LOAD Filter Bag Design
to provide maximum depth filtration for higher pressure applications that would otherwise require filter bag positioners to restrict filter bag movement
Retention of gelatinous/deformable particles
When sharp alloy particles damage needle felt filter bags
MAX-LOAD catalog pages:
#1 size MAX-LOAD bags have 8.6ft2 of filter area, 7" diameter x 14" long
#2 size MAX-LOAD bags have 17.2ft2 of filter area, 7" diameter x 29" long
Maximum temperature ratings:
194ºF for polypropylene material
275ºF for polyester material
Maximum differential pressure of 36.2 PSI
Recommended replacement differential pressure between 11.6 - 21.7 PSI
Maximum flow rates:
#1 size MAX-LOAD bags, 44 GPM (Coreless version, 55 GPM)
#2 size MAX-LOAD bags, 88 GPM (Coreless version, 110 GPM)
Nominal retention ratings: 1, 5, 10, 25 and 50 μm (Coreless: 1, 5, 10, 20, 50, 100 and 150 μm)
Description code system for ordering MAX-LOAD filter bags