High-Performance Liquid Filtration with Eaton Polyester Felt Bags
For industrial applications requiring robust temperature resistance and reliable chemical compatibility, Eaton Industrial Polyester Felt Filter Bags stand out as a premier solution. As a trusted distributor for major separation technologies, Purecowater supplies high-quality Eaton filtration systems designed to tackle complex solid and liquid challenges.
Eaton’s polyester needle felt bags are engineered providing depth filtration capabilities that capture deformable and gelatinous particles while maintaining high flow rates. Unlike standard surface filtration, the needle felt construction creates a three-dimensional matrix to trap impurities within the media, significantly increasing dirt-holding capacity.
Key Features of Polyester Needle Felt
Polyester (PE) is a versatile material chosen specifically for applications where Polypropylene (PP) may not suffice, particularly involving higher operating temperatures or specific chemical solvents. Eaton utilizes silicone-free materials to prevent cratering in sensitive applications like paint and surface coating.
- Material Construction: 100% synthetic fiber needle felt with a surface glaze to prevent fiber migration.
- Filtration Mechanism: Depth filtration (captures particles throughout the bag thickness).
- Seam Construction: Available in fully welded (bypass-free) or sewn heavy-duty construction.
- Sealing Technology: Options include the patented SENTINEL® seal ring for a chemically resistant, pressure-activated seal, or the traditional SNAP-RING®.
Technical Specifications
When selecting the correct filter bag, understanding the operating limits is crucial for safety and efficiency. Eaton Polyester bags (typically designated with codes like PE) offer distinct advantages in thermal stability.
| Specification | Data / Range |
|---|---|
| Material | Polyester Needle Felt |
| Micron Ratings | 1, 5, 10, 25, 50, 100, 200 µm |
| Max Operating Temperature | Approx. 275°F – 300°F (135°C – 149°C) |
| Recommended Change-out Pressure | 11.6 – 21.7 psi (0.8 – 1.5 bar) |
| Standard Sizes | 01 (Single Length), 02 (Double Length), 03, 04 |
| Construction | Welded or Sewn |
Note: Always consult the chemical compatibility charts before selection, as polyester is generally not recommended for high pH (strong alkaline) or hydrolytic environments at high temperatures.
Advanced Sealing: SENTINEL vs. SNAP-RING
Eaton offers two primary sealing technologies for their industrial bags. Selecting the right ring ensures zero bypass, which is critical for high-purity product streams.
| Feature | SENTINEL® Seal Ring | SNAP-RING® |
|---|---|---|
| Description | Pressure-activated flexible lip seal. | Rigid metal or plastic ring sewn into the top. |
| Material | Polypropylene, Polyester, or Santoprene. | Steel (Zinc-plated/SS) or Plastic. |
| Bypass Risk | Near zero (adapts to housing deformation). | Standard reliable seal. |
| Compatiblity | Fits standard Eaton housings. | Universally compatible with most housings. |
Common Industrial Applications
Eaton Polyester Felt filter bags are deployed across various industries due to their ability to handle higher temperatures than polypropylene and filter oils and solvents effectively.
- Automotive: Filtration of paints, clear coats, varnishes, and cleaning fluids.
- Chemical Processing: Filtering solvents, resins, adhesives, and petrochemicals.
- Water Treatment: Removal of suspended solids, sand, and scale in industrial water loops.
- Metal Working: Filtration of cooling lubricants and hydraulic oils.
- Food & Beverage: (Specific Food-Grade models) Polishing of edible oils and syrups.
For applications requiring extended service life, Eaton also offers the DURAGAF™ series in polyester, which features a thicker media mat to increase dirt-holding capacity by up to five times compared to standard bags [eaton.com].
Contact Purecowater for Filtration Solutions
Whether you require standard SENTINEL bags or custom configurations for high-temperature applications, Purecowater provides the expertise to optimize your filtration process. We help you minimize downtime and reduce waste disposal costs with the correct media selection.
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