If you handle anything from CIP return lines to solvent recovery, you already know the unsung hero is the support basket. The Bag Filtration/Filter System gets all the headlines, but the humble Perforated Filter basket decides whether your bags last a shift or a quarter. Trends? More stainless, fewer plastics; tighter QA; faster changeouts; and, honestly, more emphasis on audit trails and certifications than ever.
Three things I keep hearing from maintenance managers: “We need baskets that don’t warp under ΔP spikes,” “cleanability is king,” and “give us data.” In fact, many customers say their older carbon-steel baskets pitted within a year—switching to 316L Perforated Filter baskets prevented that, and made QA happier during swab tests.
This stainless basket is the backbone of the Bag Filtration/Filter System—think TIG-welded seams, rolled shells, reinforced rims. Micron rating? Your filter bag decides. The basket ensures rigidity, open area, and flow distribution.
| Material | SS304, SS316L (ASTM A240) |
| Perforation Ø | ≈2.0–6.0 mm (custom up to 10 mm) |
| Open Area | around 23–40% (real-world use may vary with sheet thickness) |
| Sheet Thickness | ≈1.0–2.5 mm |
| Basket Sizes | #1, #2, custom OD/height, ring or flange top |
| Max Temp | up to ≈200°C (depends on gasket/bag) |
| Recommended Max ΔP | ≈0.6 MPa across basket+bag |
| Finish | Pickled/passivated; optional electropolish (Ra ≈0.6–0.8 μm) |
| Compliance | ISO 9001; food-contact options per FDA/3-A |
Materials: SS304/316L sheets → CNC perforation (staggered pitch) → rolling → TIG seam welding → bottom cap and rim reinforcement → pickling/passivation → optional electropolish → dimensional QC.
Testing & standards: hydrostatic at ≈1.5× working pressure; weld visual per ISO 5817 (level C/B by request); material certs EN 10204 3.1; dimensional tolerances to ISO 2768-m; sheet per ASTM A240. Service life? I’d quote 3–7 years depending on chemistry, ΔP spikes, and cleaning regime.
Water treatment, food & beverage (syrups, beer polishing), fine chemicals, paint & inks, pharma intermediates, oil & gas prefilters. In CIP-heavy plants, a smooth-finish Perforated Filter basket makes washdown faster and reduces fiber snagging.
Origin matters for logistics and traceability. This unit ships from: Hou Zhuang Industry Zone, Anping County, 053600, Hebei Province, China.
| Vendor | Certs | Lead Time | Customization | Notes |
|---|---|---|---|---|
| CC Metal Mesh (China) | ISO 9001; food-contact options | ≈10–20 days | Perforation Ø, finish, rim style | Strong on volume; competitive pricing |
| EU Fabricator A | ISO 9001/14001 | ≈3–5 weeks | High polish, 3-A options | Short freight to EU plants |
| Local Fab B | Varies | ≈1–3 weeks | Basic geometry changes | Fast service; higher unit cost |
Paint plant, Southeast Asia: Switched to 316L baskets with 3 mm perforations; bag collapse events dropped to zero and average bag life went from ≈5 to ≈12 days at 0.35 MPa ΔP.
Brewery, EU: Electropolished Perforated Filter baskets cut CIP cycle time by around 18% (foam reduction, faster drain). QA swabs improved by a small but consistent margin.
“No burrs, no bag snags”—that’s the most common feedback. Lab delta-P curves on water at 20°C show ≈8–12 kPa drop across basket+bag (1–25 μm bag) at 6 m³/h in #2 housings; your viscosity will shift that, obviously.
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