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PTFE Liquid Filter Bag
AuraFlow PTFE Liquid Filter Bag Series: High-Performance Teflon® Liquid Filter Bags
The AuraFlow PTFE Liquid Filter Bag Series represents the gold standard in industrial liquid filtration. Engineered for the most demanding environments, these Teflon® felt liquid filter bags provide exceptional depth-loading filtration, ensuring the removal of both solid debris and gelatinous contaminants.
Whether you are managing aggressive chemical processing or high-temperature steam applications, the AuraFlow series delivers unmatched durability and precision.
Key Technical Specifications
- Micron Ratings: Precision filtration from 1 to 200 microns.
- Thermal Resistance: Operates effectively at temperatures up to 500°F (260°C).
- Media Type: High-flow, low-pressure drop Teflon® (PTFE) felt.
- Surface Treatment: Professional singed finish to virtually eliminate fiber migration and downstream contamination.
- Hardware Options: Choice of Stainless Steel or Titanium rings for maximum chemical compatibility.
Our Key Features
- High temperature resistance up to 2600C
- Superior chemical resistance
- Capture fine particles
- Consistent filtration performance
- High corrosive environment
- Water repellent
- Critical Humidity control
- Long time performance
- Teflon microporous structure.
- Electrostatic option Acid and Alkali resistance
Application
- Chemical Processing
- Power Plant
- Steel Industry
- Waste Water
- Cooking Oil Gas Plant
Technical Data
- Top Ring: Stainless steel 316, titanium
- Side and Bottom Seal: Sewing
- Differential pressure bag replacement: 1.72 bar @ 25 psi
- Differential pressure bag replacement (max allowable): 3.5 bar @ 25 °C/27 psi
- Micron rating: 1 to 200 and customized to ensure the desired particle retention
- Efficiency: 85% to 95%
Common Applications
The AuraFlow K-Series is the preferred choice for sectors requiring “zero-fail” filtration:
- Petrochemicals: Filtering hot oils and aggressive solvents.
- Pharmaceuticals: High-purity processing under sterilized, high-temp conditions.
- Power Generation: Boiler blowdown and condensate filtration.
- Specialty Chemicals: Handling corrosive acids and bases.
PTFE liquid Filter Bag Comparison
When selecting the right filtration media, it is essential to understand how AuraFlow PTFE (Teflon®) compares to standard materials like Polyester (PE) or Polypropylene (PP). While PTFE carries a higher initial cost, its performance in “extreme-duty” environments often makes it the most cost-effective choice over the long term.
Here is a technical comparison to help you decide when to upgrade to the AuraFlow K-Series.
| Feature | Polypropylene (PP) | Polyester (PE) | AuraFlow PTFE (K-Series) |
| Max Temp | 200°F (93°C) | 275°F (135°C) | 500°F (260°C) |
| Acid Resistance | Excellent | Good | Superior (Near-Universal) |
| Alkali Resistance | Excellent | Poor | Superior |
| Solvent Resistance | Fair | Good | Superior |
| Fiber Migration | Low | Low | Zero (Singed Finish) |
| Standard Cost | $ | $$ | $$$ |
Why PTFE Stands Out
1. Thermal Integrity
Standard bags fail when temperatures exceed 300°F, often melting or losing structural shape. AuraFlow PTFE is rated for continuous use at 500°F. This makes it the only viable choice for high-temp steam, hot oils, and aggressive thermal processing.
2. Chemical “Near-Inertness”
- Polyester struggles in alkaline (high pH) environments.
- Polypropylene can swell or degrade when exposed to certain organic solvents.
- AuraFlow PTFE is chemically inert to almost all known acids, alkalis, and solvents. It prevents “blinding” (clogging) caused by chemical reactions between the liquid and the bag fibers.
3. Fiber Migration & Product Purity
In critical applications like pharmaceuticals or specialty chemicals, fiber shedding is a deal-breaker. AuraFlow bags feature a singed finish, which uses a heat-treatment process to fuse straggly surface fibers. This ensures that the only thing passing through the filter is your clean liquid.
4. Total Cost of Ownership (TCO)
While a Polypropylene bag is cheaper upfront, it may require replacement every few days in a harsh environment. An AuraFlow PTFE bag can often last 3x to 5x longer, reducing:
- Labor costs for frequent bag changes.
- Process downtime.
- Waste disposal volume.
Why Choose AuraFlow PTFE Filter Bags?
1. Extreme Chemical & Thermal Stability
Constructed from 100% PTFE (Polytetrafluoroethylene), these bags are nearly inert. They are designed to withstand highly acidic or alkaline liquids that would destroy standard polyester or polypropylene media.
2. Advanced Depth Loading Technology
Unlike surface filters that clog quickly, our Teflon® felt allows for depth loading. This means particles are trapped throughout the cross-section of the media, leading to a longer service life and fewer change-outs.
3. Optimized Flow Dynamics
The unique needle-felt structure is engineered for high flow rates paired with a low pressure drop (ΔP). This efficiency reduces the strain on your pumping systems and lowers overall energy costs.
