1iron, steel mill, ferroalloy plant, refractory plant, foundry,
power plant of
flue gas dedusting system etc.
2 Wastes incinerator, coal fired boilers, fluid fluidized bed
boiler flue gas
3Asphalt mixing, building materials, cement ceramic, lime and
and other production sites.
4Aluminum electrolysis, lead and tin, zinc, copper and other rare
smelting gas filtering,superfine material recovery, liquid and
Modification Nomex Filter Bag Features:
Bag body ----- Modification Nomex filter cloth
Bag cuff ----- steel-plate,rubber rings and garter spring is
2) Working temperature:
Normal Working Temperature ----- 190-celsius-degree
Peak Working Temperature ----- 240-celsius-degree
3) Weight standard580g/m2
4) Filtration efficiencyup to 99.99%
5) Filtering precision: 120~200L/M2*S.
6) Dimension&Length: As customers' requirement.
Fine strength&ideal air permeability&big durability.
Construction: filters are carefully fabricated and sized to ensure ease of
installation and change-out. Generally, dust collector filter bags
are designed to be mounted and gasketed firmly into place with a
snap band, corded cuff, or clamp to ensure dust type seal.
Various coatings and finishes can be applied to either side of the dust collector Polyesater filter bag to enhance cleaning and efficiencies, as
well as prolonging service life. Groundwire, anti-collapse rings,
and other options can easily be incorporated into bag construction.
can custom fabricate various types of attachments to work with your
specific shaker mechanism, whether a loop, eyelet, grommet, or
|Polyester filter felt||600g/m2||PE/PE||1.9||135 /150||singed on one side|
|Ployster,oil and water ,|
dirt repellent finish filter
|550g/m2||PE/PE||1.7||135 /150||singed on one side|
oil and water repellent finish
cleanability supporting finish
|Polyster+antistatic||550g/m2||PE/PE||1.7||135 /150||singed on one side , antistatic|
|PPS high-temperature resistant||550g/m2||PPS/PPS||1.7||190 /200||singed on one side|
resistant corrosion prevention
|700g/m2||PTFE/PTFE||1.2||250 /280||singed on one side , corrosion prevention|
|Polyster+PTFE membrance||550g/m2||PE/PE||1.7||135 /150||singed on one side,PTFE membrance|
|P84 high-temperature resistant||550g/m2||P84/P84||2.8||240 /260||singed on one side corrosion prevention|
|FMS high-temperature resistant||550g/m2||FMS/FMS||2.2||200 /200||singed on one side|
Selecting the right replacement filter bag for your situation is
critical to your operation. Grace Filter provides a careful
analysis of your current operating parameters and complete filter
bag diagnostic testing to help improve your baghouse and dust
collector performance and efficiency.
Grace Filter manufactures a complete line of aftermarket filter bags for nearly every baghouse or dust collector in operation. We
manufacture most of the filter media used for our filter bags,
which allows us to pass along the savings and produce the highest
quality filter bags for your operation.
There are 5 primary steps you should go through when ordering a
The main type of dust filter bags including Nomex filter bag ,PPS
filter bags ,P84 filter bag ,PTFE filter bags ,Acrylic filter bags ,Polyester filter bags,dust filter bag ,bag filters,dust collector bags.
Step. 1 MATERIAL SELECTION
You should choose the media from which your filter bags dust filter
bag will be constructed based on the type of application they will
be used for. Take the following things into consideration prior to
selecting your media:
- Temperature - do your bags need to withstand extreme temperatures
- Product - what are you filtering
- Chemistry - can your bags withstand the chemical make up of the
- Resistance- is the filter media able to resist the wear and tear of
the dust particles
Choosing the correct filter media is an important and sometimes
difficult process. To assist you in the identification of the right
media for your bags, keep the following in mind:
Filter bag dust filter bag performance is directly related to how
well it can tolerate the environment in which it is being used, how
efficiently it can remove the dust particles and it’s ability to
clean and renew.
You must first learn to identify the type of filter media currently
used in your application. Below you will find a list of typical
- Polypropylene (PPRO)
- Polyphenylene sulfide (PPS)
- Polyester (PE)
- P84 ,POLYIMIDE
For additional information on media types please examine our sample
A simple test to determine if a material is a thermoplastic is to
take a small swatch and put a flame to it. A thermoplastic material
will begin to melt when exposed to direct heat.
The selection criterion eliminates materials based on temperature
and chemical characteristics. The first cut is usually made based
on temperature. Then the chemical characteristics of the gas stream
are considered to further refine the search. Chemical Resistance.
Next, the efficiency of the material further dictates the
construction of the material i.e. – the weight – oz/sq. ft., fiber
and surface treatments/membranes. Last but not least, if there are
still two or more candidates it comes down to a price versus
performance trade off.
Step. 2 MEASUREMENTS
(get accurate measurements for optimal performance)
Most dust collectors have been upgraded over the years due to the
need for new permits which called for reconfiguration of the bag
house in which case OEM configurations will have changed. Because
of this you will need to obtain accurate measurements for your
filters before ordering replacement filter bags. filter bags dust
If you currently have filter bags ,dust filter bag installed that are functioning properly, you can pull out one of
those bags to get the proper measurements for your replacement
order. (spare bags not yet used can also be measured if available)
If you are removing a used bag to measure, please be sure to use
all necessary precautionary measures set in place prior to removal
(i.e. – gloves, protective garments, & respiratory equipment if
needed) It is best not to pull the numbers off the unit because of
possible changes to the configurations. e
Step. 3 and 4 TOP & BOTTOM CONSTRUCTION
(of the filter bag play can determine it’s efficiency)
The top and bottom construction of a filter bags and dust filter
bag involves a variety of possible configurations. The type of
cleaning process used by the dust collector determines which
configurations will be used in the design of the filter bag.
- snap band
- Raw edege
- Loop top
- snap band
- Beaded Cuff
- Overlock Disk
- Lockstitch Disk
MECHANICAL CLEANING (SHAKER) BAG HOUSES - usually found in critical application
REVERSE AIR BAGHOUSES - usually found in large air handling environments dust filter
bags such as power plants and cement plants although they do have
uses in a variety of industries.
TYPICAL TOP CONSTRUCTION
- Snap band
- Thick felt around
TYPICAL BOTTOM CONSTRUCTION
- Double bottom
Pulse jet (Reverse jet) Baghouses - found in almost every industrial environment. They are by far the
most popular design and are seen in nearly all industry segments.
TYPICAL TOP CONSTRUCTION
- Snap band
- Thick felt around
TYPICAL BOTTOM CONSTRUCTION
Step. 5 ADDITIONAL OPTIONS
(can improve filter bag performance)
- Ground Wire
- Extended Top
- Extended bottom
- Extended top and bottom
- Copper, Stainless Steel
GROUNDWIRE – Use to comply with Factory Mutual requirements for static
dissipation. Groundwire can be found in stainless steel and copper
and actually only works in a localized area of the filter. For
optimal static dissipation look at conductive fiber filter made
with Epitropic or Stainless Steel fibers.
WEAR CUFFS – Used to combat abrasion at the bottom of the bag either from
“sandblasting” of the bags or bag-to-bag abrasion due to turbulence
in the bag house. Usually 2 to 4 inches in length and made of a
material similar to that of the body of the filter bag.
Metal Hanger - This is a variation on dust filter bags the loop with a metal hanger sewn into the loop. Be sure to
measure the length to the center of the hanger. TIP: once you have
the length, cut out the hanger and photocopy or make a digital
photograph to then include with your RFQ.
Cap - Cap sizing with a measuring tap or calipers is very difficult.
It is best to supply the cap if you intend to reuse them on the new
bags, else request the bags and caps be supplied as a fitted
Snap ring -The size of the snap ring (Snap Band) is really determined by the
diameter and thickness of the hole it is placed into. Those
measurements must be either taken from the bag house drawings or
actually measured on the bag house Tube Sheet while it is offline.
If this is not possible, send us a snap ring. We can size the snap
ring to one of our hundreds of test jigs we have especially for
Plain hem w/ clamp - The material is simply folded back and sewn. The length of the
cuff may be critical, as this inlet to the bag tends to see the
greatest velocity and dust loading and consequently the greatest
Corded cuff w/ clamp - Same as the plain hem but with the addition of a cord or rope
inserted at the bottom. This reduces the likelihood of the bag
pulling past the clamp and detaching from the tube sheet.
Compression Band - A Compression Band dust filter bags is similar to a Snap ring
but rather than the gasket sealing to a Tube Sheet the compression
band seals to a Metal Cap or a raised collar.
Raw edge/ Soft cuff - Raw edge dust filter bags have no measurement Do not if there is
a “V” notch cut into the bag. Soft cuffs make for easier fold in of
the bag. Measure the amount of the cuff outside and inside the main
Double beaded Snap ring - The size of the snap ring is really determined by the diameter
and thickness of the hole it is placed into. Those measurements
must be either taken from the bag house drawings or actually
measured on the bag house while it is offline. If this is not
possible we can size the snap ring to one of our hundreds of test
jigs by having it sent in.