PROGAF
filter bags provide BETA 5000 retention
efficiencies with a high performance, multilayer
design that rivals the performance of filter cartridges.
PROGAF filter bags are manufactured from melt-blown polypropylene
and have a special layered "step" crush seal style filter bag to
eliminate particle bypass in support of 1 micron particle retention
with 99.9%. This equates to a BETA 5000 ratio or
retention of 4999 of 5000 one micron sized test particles during
laboratory testing. The ultra pure polypropylene filaments
used in the construction of PROGAF filter bags are silicon free and
subject to rigorous ISO 9001:2015 quality control procedures to
ensure performance. PROGAF filter bags are hydrophobic and are
in compliance with the FDA
requirements according to title 21, Section 177 and the EC
Directives 1935/2004 and 2002/72/EC for contact with food and
beverages. All layers of PROGAF filter bags terminate to a
common welded seam.
The
sealing ring is referred to as a STEP-RING and its multiple step
design corresponds with the multiple layer design of PROGAF filter
bags, which have as many as 12 layers. The seal of a crush
seal design filter bag improves with an increase in
differential pressure. The filter bag seal is made from
polypropylene and each filter bag layer is welded to the sealing
ring. The integrally molded handles simplify removal from the
filter housing.
The combination of several filtration layers optimizes the particle retention holding capacity by distributing the coarser particles within the outer layers and finest particles within the inner layers. The progressively finer structure of PROGAF filter bags is akin to using several bag filter housings in series and thus reduces the number of bag filter housings and filter bags and the associated downtime corresponding to filter bag changes. The outermost layer consists of polypropylene mesh to prevent fiber migration.
Specifications:
5.2ft2 of filter surface area
Maximum temperature rating of 194ºF
Maximum differential pressure of 36 PSI
Recommended replacement differential pressure between 11.6 - 21.7 PSI
Maximum flow rate 44 GPM
There are (3) PROGAF filter bags made in the universal #2 size (7" diameter x 32" long) having BETA 5000 (99.9%) efficiencies of 1, 2 and 12 microns.