Factory Direct Metal Cartridge Filter Element

Our metal cartridge filter elements are manufactured from stainless steel alloys and are designed for high‑temperature, high‑pressure industrial filtration where polymer‑based cartridges would degrade.

Construction Materials

The filter medium is typically a woven or sintered stainless steel mesh (304, 316L, or duplex 2205) with pore sizes ranging from 5 µm to 200 µm, selected based on the target particulate size distribution.

End caps, cores, and support grids are fabricated from the same alloy to avoid galvanic corrosion, and all welds are TIG‑performed to maintain mechanical integrity under cyclic pressure loads.

Filtration Performance Characteristics

Pressure drop across a clean element follows the Darcy‑Weisbach relationship; for a 304 stainless steel 50 µm mesh at 1 m³/h flow, ΔP is approximately 0.15 bar, rising linearly with contaminant loading.

Temperature resistance exceeds 400 °C for 316L, allowing use in hot gas streams or steam condensate lines where polymeric filters would suffer thermal degradation.

Corrosion resistance is quantified by PREN (Pitting Resistance Equivalent Number); 316L offers PREN ≈ 24, suitable for chloride‑containing environments up to 500 ppm.

Design Customization Options

• Outer diameter: 20 mm to 200 mm, adjustable in 1 mm increments.
• Length: 50 mm to 1500 mm, with standard increments of 25 mm.
• End‑cap configurations: threaded (NPT, BSP), flanged (ANSI, DIN), or quick‑release clamp.
• Media geometry: pleated, cylindrical, or conical to optimize surface area versus pressure drop.
• Surface treatments: electropolishing, passivation, or PTFE coating for specific chemical compatibility.

Each dimensional parameter is verified with CMM inspection to ±0.05 mm tolerance, ensuring repeatable fit in existing housings.

Quality Assurance and Testing

All elements undergo a three‑stage inspection: raw material certification (EN 10204 3.1), dimensional verification, and integrity testing.

Integrity testing includes bubble point measurement (minimum 0.8 bar for 5 µm mesh) and hydrostatic burst testing at 1.5× design pressure.

Traceability is maintained via laser‑etched lot numbers, enabling rapid recall analysis if needed.

Typical Industrial Applications

In petrochemical refineries, these filters protect downstream catalysts from particulates in hot hydrocarbon streams operating at 350 °C and 10 bar.

Power generation plants use them in steam condensate polishing to remove iron oxide particles that would otherwise erode turbine blades.

Food and beverage processors select electropolished 316L elements for sterile filtration of hot liquids, meeting 3‑A sanitary standards.

Frequently Asked Questions

• Can dimensions be customized? Yes, outer diameter, length, and end‑cap type are fully configurable to match existing housings.
• What information is required for a quotation? Provide required flow rate, operating temperature, pressure, contaminant size distribution, and material compatibility.
• Which materials are available? Standard grades are 304, 316L, and duplex 2205; other alloys (e.g., Hastelloy, Inconel) are offered upon request.
• How is quality inspected? Each lot receives material certification, dimensional CMM check, bubble point, and hydrostatic burst testing.
• What packaging options exist? Elements are packed in PVC‑lined cartons with foam spacers; palletized for sea freight with moisture‑barrier wrap.
• What is the typical lead time? Standard configurations ship in 3–4 weeks; custom designs depend on tooling and are quoted per project.

To discuss your specific filtration challenge or request a detailed quotation, please contact our engineering team.