Product
Filter Bags / PTFE Membrane
Filter Bags
Polyester, PP, acrylic, PPS, aramid, P84, PTFE, fiberglass, antistatic, and ePTFE membrane filter bag options.
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PRODUCT GROUP
Filter Cages
Filter cages, bag cages, cataphoresis-coated cages, silicone-coated cages, SS304 venturi cages, and membrane-compatible cages. Hantech Filter helps you select the right product combination for your facility's flow rate, temperature, dust type, and operating conditions.
Galvanized, e-coat (cataphoresis), silicone-coated, and stainless steel options
SS304 venturi cage
12-wire / 20-wire cage options
20-wire SS304 venturi cage for PTFE membrane bags
Length and connection details per project
Global technical approach
The cage is the unseen support component that determines bag life
Wire count, straightness, surface quality, venturi compatibility, and corrosion resistance are the key factors in cage selection. Galvanized, cataphoretic (E-coat), silicone-coated, and stainless steel options are evaluated according to process conditions.
Filter Cages decision criteria
Product selection is made by evaluating site data, process risk, maintenance access, and operating cost together.
Information to be clarified before quotation
- Filter bag diameter/length and top connection type
- Existing filter cage wire count, coating type, and venturi size
- Gas temperature, moisture, and chemical environment
- Photos of filter bag tearing/wear areas
- Service clearance height and installation area
No. of wires
A 12-, 16-, or 20-wire construction affects the bag support surface and pulse distribution.
Surfacing
Temperature, corrosion, and moisture are taken into account when choosing between galvanized, cataphoresis-coated, silicone-coated, or stainless steel.
Venturi compliance
The nozzle center, venturi mouth, and blow pipe holes must be on the same axis.
Perpendicularity and measure
A bent cage chafes against the bag; the top/bottom connection tolerance affects bag tearing.
Product / application comparison
| Type / solution | App | Advantage | Caution point |
|---|---|---|---|
| Galvanized filter cage | General cement, mineral, and silo filters | Economical and widely used | Coating life is monitored in damp/acidic environments |
| Cataphoresis-coated cage | Lines requiring moisture or chemical exposure resistance, or higher coating adhesion | Makes bag-to-cage contact safer through uniform coating and corrosion resistance | Actual gas chemistry, temperature, and condensation risk are checked |
| Silicone-coated filter cage | Applications involving temperature effects, friction sensitivity, and special filter bag surfaces | Provides a smoother contact surface and additional protection depending on process conditions | Continuous/peak temperature and filter bag media compatibility must be verified |
| Stainless SS304/SS316 | Corrosion, food, chemical, humid lines | High corrosion resistance | Cost is higher; the process justification becomes clear |
| 20-wire filter cage with venturi | PTFE membrane and sensitive bags | Better support and pulse distribution | Nozzle centering is specifically checked |
| Segmented / multi-piece filter cage | Long bags and limited service height | Simplicity of installation. | Burrs and chafing risk are checked at joints |
Product images
Correctly categorized site and equipment images for Filter Cages
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Technical selection
What we evaluate together during the quotation process
Flow rate, pressure drop, temperature, moisture, dust abrasiveness, emission target, maintenance access, and compatibility with existing equipment are all considered together.
Technical sizing
Correct sizing based on flow rate, pressure drop, filtration velocity, and A/C ratio.
Material & Media
Filter bag media, cage, and valve selection suited to process temperature, moisture, and dust characteristics.
Spare parts & service
Long-term spare parts supply, installation guidance, and field application support.
Product groups
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ExploreGet a technical quote for Filter Cages.
Share your process values; let us recommend the most suitable product, media, and spare parts combination.