High-Performance Filtration Without the Bypass
In industrial liquid filtration, efficiency is defined by the integrity of the seal. Traditional sewn filter bags often present a common weakness: needle holes. These tiny perforations can allow bypass, letting contaminants slip through the filtration media and compromising the purity of the final product.
The Eaton SENTINEL industrial filter bag addresses this challenge with a fully welded construction. By utilizing advanced thermal welding technology, Eaton eliminates needle holes entirely, creating a bypass-free filtration solution designed for applications requiring high efficiency and purity. As a distributor for premier filtration solutions, Purecowater provides these high-performance bags to help industries tackle complex solid and liquid separation challenges.
Key Features of Eaton SENTINEL Filter Bags
The SENTINEL series is engineered to provide superior sealing and ease of use compared to standard steel-ring bags. The core innovation lies in its construction and the patented sealing mechanism.
- 100% Welded Construction: Unlike sewn bags, SENTINEL bags are constructed using welded seams. This ensures there are no needle holes for particles to bypass the media.
- Patented SENTINEL Seal Ring: The plastic ring provides a chemically resistant, flexible seal that adapts to the filter housing. As differential pressure increases, the seal tightens, ensuring zero bypass.
- Silicone-Free Material: Manufactured from materials free of silicone and crater-forming substances, making them ideal for paints, varnishes, and automotive coatings.
- Integrated Handles: The bag’s ring includes elevated handles, allowing for quick and easy removal during change-outs compared to standard metal loops.
Technical Specifications
When selecting the right filter bag for your process, understanding the material capabilities and operating limits is crucial. The SENTINEL bags are available in Polypropylene (PO) and Polyester (PE) needle felt.
| Specification | Value |
|---|---|
| Filter Material | Needle felt Polypropylene or Polyester |
| Seal Ring Material | Welded Polypropylene or Polyester SENTINEL ring |
| Micron Ratings | 1, 5, 10, 25, 50, 100, 200 µm |
| Max. Operating Temperature (Polypropylene) | 194°F (90°C) |
| Max. Operating Temperature (Polyester) | 302°F (150°C) |
| Max. Differential Pressure | 36.2 psi (2.5 bar) |
| Recommended Change-out Pressure | 11.6 – 21.7 psi (0.8 – 1.5 bar) |
Sizing and Flow Rates
SENTINEL bags fit standard bag filter housings. Choosing the correct size ensures optimal flow rates and filtration surface area.
| Size Code | Dimensions (Diameter x Length) | Filter Area | Max Flow Rate |
|---|---|---|---|
| 01 | Ø 7 x 17” L (180 x 430 mm) | 2.6 ft² (0.24 m²) | 88 GPM (20 m³/h) |
| 02 | Ø 7 x 32” L (180 x 810 mm) | 5.2 ft² (0.48 m²) | 176 GPM (40 m³/h) |
| 03 | Ø 4 x 9” L (100 x 230 mm) | 0.9 ft² (0.08 m²) | 26 GPM (6 m³/h) |
| 04 | Ø 4 x 15” L (100 x 380 mm) | 1.7 ft² (0.16 m²) | 53 GPM (12 m³/h) |
Common Applications
Due to their highly efficient sealing and silicon-free construction, Eaton SENTINEL bags are widely used in industries where product purity is non-negotiable.
- Automotive: Paints, coatings, and varnishes where “wetting disturbance” substances like silicone must be avoided.
- Chemical Processing: Filtration of acids, alkalis, and solvents.
- Water Treatment: Process water and wastewater filtration.
- Inks and Resins: Ensuring consistency and removing particulates from viscous fluids.
Need Assistance with Filtration Sizing?
Purecowater specializes in solving complex solid and liquid filtration problems. Whether you need to replace existing bags or engineer a new solution, our team provides expert guidance on the Eaton SENTINEL line.