In the field of precision filtration, the stability, durability, and filtration efficiency of the filter cartridge directly impact the operational quality of the entire production system. The Stainless Steel Hinged (Fin-End) Pleated Filter Cartridge, with its unique structural design, excellent material properties, and wide applicability, has become an ideal choice for pipeline filtration systems in industries such as biopharmaceuticals, food and beverages, and electronic chemicals.
A stainless steel hinged pleated filter cartridge is a filtration element that utilizes a stainless steel support structure combined with high-efficiency pleated filter media. Its most distinctive feature is the unique "fin" structure (commonly referred to as the hinge or "wingtip") on the end cap, designed for precise positioning and reliable sealing within the filter housing. The core filtration layer can be made from various high-efficiency membrane materials such as Polypropylene (PP), Polytetrafluoroethylene (PTFE), or Polyethersulfone (PES), catering to a wide range of filtration needs from coarse to fine filtration.
Center Core/End Caps: Constructed from 304 or 316L stainless steel, providing excellent mechanical strength and corrosion resistance, ensuring the cartridge does not deform or rupture under high differential pressure.
Support Layers: Inner and outer support meshes protect the pleated filter membrane and extend its service life.
Common Specifications: 226 fin, 222 fin, 215 fin, etc.
Functional Advantage: The fin structure interacts with the hold-down plate inside the filter housing, creating a mechanical lock. This effectively prevents the cartridge from shifting or vibrating due to fluid impact, ensuring the O-ring remains correctly positioned and eliminating bypass.
Large Filtration Area: The pleated structure maximizes the filtration area within a given volume, reducing flow resistance at equivalent flow rates and increasing dirt-holding capacity.
Multi-layer Structure: Can incorporate pre-filtration layers as needed for gradient filtration, extending the cartridge's lifespan.
Equipped with food-grade or pharmaceutical-grade sealing materials (Silicone, EPDM, Viton, etc.), ensuring absolute sealing of the filtration system and preventing unfiltered media from bypassing the cartridge.
The stainless steel support structure provides excellent resistance to pressure and impact, withstanding operating differential pressures up to 0.6MPa, suitable for high-pressure or high-viscosity fluid filtration.
304/316L stainless steel is resistant to most organic solvents and acid/alkaline media (excluding strong reducing acids). When paired with inert membranes like PTFE, it can handle the most demanding chemical filtration applications.
Filtration ratings range from 0.1μm to 100μm, meeting various process requirements from clarification to sterilization.
Operating temperatures can reach up to 80°C or higher (depending on the sealing material), suitable for filtering high-temperature liquids or steam.
The combination of fin positioning and bottom O-ring sealing provides a dual guarantee, maintaining reliable sealing even during frequent start-stops and pressure fluctuations.
Depending on the membrane material, some models support cleaning regeneration or backwashing, effectively reducing operating costs.
| Parameter | Range |
|---|---|
| End Cap Configurations | 222/Flat, 226/Fin, 215/Fin, etc. |
| Cartridge Lengths | 5", 10", 20", 30", 40" |
| Filtration Ratings | 0.1μm, 0.22μm, 0.45μm, 1μm, 3μm, 5μm, 10μm, 20μm, 50μm, 100μm |
| Membrane Materials | Polypropylene (PP), Polytetrafluoroethylene (PTFE), Polyethersulfone (PES), Glass Fiber (GF) |
| Support Structure Material | 304 Stainless Steel, 316L Stainless Steel |
| Sealing Materials | Silicone, EPDM, Viton, NBR |
| Maximum Operating Temperature | ≤80°C (depends on sealing material) |
| Maximum Differential Pressure | 0.6MPa (at 25°C) |
| Filtration Area | ≥0.6㎡ per 10" cartridge (varies by specific design) |
Filtration of Active Pharmaceutical Ingredients (APIs), formulations, and intermediates
Protective filtration for pharmaceutical water and Water for Injection (WFI)
Sterilizing filtration of biological products, sera, and culture media
Clarification filtration for spirits, beer, and wine
Final filtration for mineral water and purified water
Particle removal from juices, syrups, and seasonings
Pre-filtration protection for high-purity water systems
Precision filtration of photoresists, developers, and etchants
Chemical filtration of organic solvents, acids, and alkalis
Filtration of electroplating solutions, paints, and coatings
Filtration for oilfield injection water and cooling water circuits
Gas filtration for steam and compressed air (when used with appropriate housing)
