Top Features
Stainless steel water filter cartridges are available for industrial high-flow water filtration where efficiency, durability, and reusability are essential.
In operation, retained solids can be removed by backflushing, which helps restore permeability and reduce replacement frequency.
With high porosity and low pressure drop, they are not easily blocked. This facilitates them to handle high-flow applications.
The filtration accuracy is as low as 0.5 microns, and there is no media migration. They are suitable for high-standard water reuse applications.
Even in harsh industrial water treatment systems where polymer filters may degrade or fail, they remain intact, ensuring a long service life.
What Is A Stainless Steel Water Filter Cartridge?
A stainless steel water filter cartridge is designed to remove solid impurities from water. With excellent structural strength and stability, it enables reliable, long-term operation in high-temperature, high-pressure, and corrosive environments. Meanwhile, it maintains a high flow rate with low pressure drop through operation.
It is typically installed in pre-filtration systems or in-line filter housings. By trapping silt, rust, and suspended particles, it prevents them from entering critical downstream equipment such as reverse osmosis (RO) membranes, pumps, and heat exchangers. This directly reduces equipment wear and minimizes the risk of sudden failure.
Product Classifications
Not every water stream behaves in the same way. Filson offers five distinct stainless steel constructions. You can select the cartridge that exactly matches your pressure, temperature, and contamination challenge.
- Stainless Steel Sintered Fiber Felt Water Filter Cartridge
- Stainless Steel Multi-Layer Sintered Mesh Water Filter Cartridge
- Stainless Steel Sintered Powder Water Filter Cartridge
- Stainless Steel Wedge Wire Water Filter Cartridge
- Stainless Steel Pleated Wire Mesh Water Filter Cartridge
Specific Applications
Generally, stainless steel water filter cartridges are used as inline or pre-filtration elements in industrial piping systems to protect downstream equipment and ensure stable operation.
Cooling Water SystemApplied in industrial cooling water systems, they eliminate rust, sand, scale, and suspended solids from circulating water, helping protect pumps, condensers, and heat exchangers against fouling and clogging.
PCB (Printed Circuit Board)During the PCB manufacturing process, they are mainly used to filter high-temperature, highly oxidative process solutions, removing circuit board debris and insoluble solids in the circulation cycle.
Boiler Feed Water SystemThey effectively remove solid impurities and corrosion products from boiler feedwater. This helps reduce particle deposition, equipment wear, flow blockage, and secondary scale formation.
Ultrapure Water (UPW) Pretreatment
SS 316L stainless steel water filter cartridge catches particulates, colloids, and other impurities that would otherwise foul or contaminate the membrane, offering a solid layer of protection. In ultrapure water (UPW) pretreatment, it is typically placed ahead of the RO membrane module.
The filter cartridge also contributes to ultrapure water with TOC < 1 μg/L, satisfying the rigorous quality standards demanded by the pharmaceutical, electronics, and semiconductor industries.
Common Applications
Filson stainless steel water filter cartridges are available for filtering drinking water, wastewater, and seawater.
Used as pre-filtration in potable water systems, they remove sand, rust, scale, suspended particles, and sediments. As such, they help improve the purity and safety of drinking water as well as protect downstream equipment such as RO membranes and fine filters.
In industrial water treatment, they support wastewater recycling and reuse by removing sediments and suspended solids, helping you reduce discharge volumes. They are well-suited for circulating water systems, boiler feedwater systems, and cooling loops.
If you are involved in seawater desalination, we offer Super Duplex or 904L stainless steel water filter cartridges. They resist severe chloride-included corrosion, help reduce SDI (Silt Density Index), protect the RO membrane, and improve your overall system stability.
Cartouche filtrante à eau en acier inoxydable
Do you need a specific length, end cap, or micron rating not listed below? Tell us your operating pressure and flow rate — we’ll match the exact cartridge to your system.
- Fiche de données
- Tabs2
| Matériel | 304/304L/316/316L/904L stainless steel, Super Duplex |
| Sealing Material | EPDM/NBR/PTFE/FKM/Silicone |
| Construction | wire mesh/sintered mesh/sintered powder/pleated stainless steel |
| Longueur | 5’’–60’’ |
| Diamètre | 1’’–6’’ |
| Micron Rating | 0.5–200 microns |
| Operating Pressure | 1–10 bar |
| Température de fonctionnement | Depends on the sealing material:
ž EPDM: up to 150°C ž NBR: up to 120°C ž FKM (Viton): up to 200–250°C ž PTFE: up to 260°C |
| Interface Type | DOE/SOE/222 O-ring/226 O-ring/threaded end caps |
| Forme | cylindrical/pleated |
| Surface Finish | mirror polish/electropolished |
| Traitement de surface | electropolishing/pickling & passivation/sandblasting |
| Certification | ISO 9001, FDA, NSF 61 |
Produits connexes
Yes, they can. But backwash suitability varies significantly by the cartridge’s design and build.
- Multilayer sintered mesh cartridgeset wedge wire cartridges are highly suitable for backwashing. In many applications, permeability recovery can reach 80–95% after proper reverse flushing, depending on fouling type and operating conditions.
- Pleated wire mesh cartridgesmay allow low-pressure assisted rinsing, depending on structural support.
- Sintered fiber felt cartridgeshave extremely low backwashing efficiency, removing only surface debris; therefore, they require ultrasonic or chemical cleaning.
- Sintered powder cartridgesmust not be backwashed. Reverse flow would cause internal compaction of contaminants and permanent structural failure.
Note: Backwashing pressure must never exceed the cartridge’s rated differential pressure in the reverse direction. Exceeding this limit will cause element collapse or rupture.
In industrial use, a stainless steel water filter cartridge delivers a typical service life of 3–5 years. Under stable operating conditions and non-aggressive water chemistry, its service life can exceed 5 years, and in some cases, even reach 10 years.
Real-world service life is shaped by water chemistry (pH level and chloride concentration), operating temperature, differential pressure control, and cleaning frequency. Proper installation, routine backwashing, and consistent operation within the cartridge’s design pressure limits all work to extend its usable service life.
Yes. Stainless steel water filter cartridges are heat-resistant, corrosion-resistant, and have high mechanical strength. They will not soften or collapse structurally due to long-term operation. As long as you select the appropriate material, precision, and cleaning method, and regularly monitor the pressure differential, they are well-suited for continuous 24/7 operation.
Stainless steel water filter cartridges are widely used in industrial water treatment systems that require 24/7 operation, such as continuous production lines, recirculating cooling water systems, and RO pretreatment systems.
Stainless steel water filter cartridges usually have a longer lifespan than plastic water filter cartridges.
With high mechanical strength, stainless steel water filter cartridges can be repeatedly cleaned for reuses. In industrial water filtration systems involving high pressure, high temperatures, or continuous operation, they are better suited for long-term use.
In contrast, plastic water filter cartridges have poor durability. They are susceptible to temperature, pressure, and chemical environments. High temperatures and UV exposure would shorten their lifespan. They are typically single-use or require replacement at short intervals, requiring regular replacement (typically every 3–12 months).
When the particle concentration is high, and there are many particles, a higher micron level (25-50 microns) can be selected. If it is necessary to remove fine impurities, a micron level of 5 microns or less can be selected.
For example, if only silt and sand need to be removed, 10–50 microns can be used. When using it to protect the RO membrane, a micron rating of 1–5 microns is commonly used. For high-purity filtration, 0.5 to 1 micron is selected.
The choice of material for stainless steel water filter cartridges primarily depends on the corrosive components in the water, particularly the chloride concentration.
- For general industrial water or low-corrosion environments, SS 304L is usually suitable.
- In water environments with certain chloride ions or moderate corrosion, SS 316L is more often usedto improve resistance to pitting corrosion.
- Inseawater or high corrosive environments, higher-grade stainless steel such as Super Duplex or 904L is required to ensure long-term stable operation.
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