✅ This item is normally regularly stocked. Shipping times may vary depending on availability. Please contact us to confirm stock and shipping times. You will receive tracking details once the item has shipped.
Description
Product Overview
The Franklin 10" x 4.5" OD FWPS-DG Series Dual Gradient Spun Poly Filter Cartridge is engineered for high-capacity sediment filtration in residential, commercial, and industrial water treatment systems. Manufactured from 100% thermally bonded polypropylene fibers, this cartridge contains no glues, binders, or chemical adhesives that could contaminate the filtered liquid.
Its dual-gradient density structure features larger outer fibers to capture coarse sediment and finer inner fibers to retain smaller particulate deeper within the cartridge. This layered design improves filtration efficiency, increases contaminant-loading capacity, and extends filter service life while maintaining low pressure drop.
The large 4.5" OD “Big Blue” style design supports higher flow rates and longer operating cycles, making it ideal for whole-house filtration, reverse osmosis pre-filtration, and demanding process water applications.
Key Features
- Dual-gradient density design improves sediment retention
- High contaminant-loading capacity for extended service life
- 100% polypropylene construction for chemical compatibility
- Thermal-bonded construction without adhesives or binders
- Low pressure drop for efficient system performance
- Resistant to bacterial attack and chemical degradation
- Will not add taste, color, or odor to filtered liquid
- NSF 42 and FDA CFR Title 21 certified
Applications
- Whole-house water filtration
- Potable drinking water systems
- Reverse osmosis pre-filtration
- Food & beverage processing
- Water purification systems
- Chemical processing
- Electroplating applications
Specifications
| Specification | Detail |
|---|---|
| Series | FWPS-DG Series |
| Cartridge Length | 10" |
| Outside Diameter | 4.5" |
| Media | 100% Melt-Blown Polypropylene |
| Construction | Dual Gradient Thermal Bonded |
| Max Operating Temperature | 60°C (140°F) |
| Nominal Replacement Pressure Drop | 1.5 Bar (22 PSI) |
| Maximum Pressure Drop @ 20°C | 3.2 Bar (46.4 PSI) |
| Maximum Flow Rate | 10 GPM |
| Micron Ratings Available | 25/1, 50/5, 75/25 Micron |
| Certifications | NSF 42, FDA CFR Title 21 |
Frequently Asked Questions
What is a dual-gradient filter cartridge?
A dual-gradient cartridge uses two different density layers to capture larger particles on the outside and finer particles deeper inside the filter, improving efficiency and extending service life.
What contaminants does this filter remove?
The FWPS-DG Series helps reduce sediment, dirt, rust, scale, suspended solids, and particulate contaminants from water systems.
Does this cartridge contain adhesives or binders?
No. The cartridge is thermally bonded without chemical binders, glues, or adhesives.
Is this filter suitable for drinking water systems?
Yes. The cartridge is NSF 42 certified and compliant with FDA CFR Title 21 requirements.
Will this filter affect water taste or odor?
No. The polypropylene media will not add taste, color, or odor to the filtered liquid.
✅ This item is normally regularly stocked. Shipping times may vary depending on availability. Please contact us to confirm stock and shipping times. You will receive tracking details once the item has shipped.
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