INDUSTRY COMPONENT

Inner Core

Inner core of marine ballast water treatment system filter cartridge for particle retention and structural support.

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Component Specifications

Definition
The inner core is a cylindrical structural component within a marine ballast water treatment system filter cartridge, designed to provide mechanical support to the filter media, maintain cartridge shape under pressure, and facilitate proper fluid flow distribution. It ensures uniform filtration by preventing media collapse and channeling, critical for removing organisms and particulates from ballast water to meet IMO D-2 standards.
Working Principle
The inner core operates by providing a rigid framework that supports the filter media (e.g., pleated fabric or mesh), allowing water to flow from the outside to the inside of the cartridge. It maintains structural integrity under differential pressure, prevents media deformation, and ensures consistent filtration efficiency by distributing flow evenly across the media surface.
Materials
Stainless steel 316L (ASTM A240), polypropylene (PP), or high-density polyethylene (HDPE), selected for corrosion resistance, mechanical strength, and compatibility with seawater. Surface finish: smooth, non-porous to prevent biofouling.
Technical Parameters
  • Length 250-1000 mm
  • Diameter 50-300 mm
  • Porosity Open area >40% for flow optimization
  • Wall Thickness 1.5-5 mm
  • Pressure Rating Up to 10 bar
  • Temperature Range -10°C to 80°C
Standards
ISO 16890, DIN 24550

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Inner Core.

marine ballast water filter inner core filtration component IMO D-2 compliance stainless steel core filter cartridge support Inner Core Inner Core in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Marine Ballast Water Treatment System Filter Cartridge

Replaceable filtration element for marine ballast water treatment systems

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Engineering Analysis

Risks & Mitigation
  • Corrosion in seawater environments
  • Biofouling accumulation
  • Structural failure under high pressure
  • Improper fit causing bypass leakage
FMEA Triads
Trigger: Material degradation due to chloride-induced corrosion
Failure: Loss of structural integrity, leading to media collapse and reduced filtration efficiency
Mitigation: Use corrosion-resistant alloys (e.g., 316L stainless steel), apply protective coatings, and implement regular inspection schedules
Trigger: Inadequate design for pressure differentials
Failure: Core deformation or rupture, causing system shutdown and potential environmental non-compliance
Mitigation: Engineer cores with safety factors exceeding operational pressures, conduct pressure testing per ISO standards

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Diameter tolerance ±0.5 mm, length tolerance ±1 mm per ISO 2768-m
Test Method
Pressure decay test per ISO 2941, material corrosion test per ASTM G48

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the primary function of the inner core in a ballast water filter cartridge?

The inner core provides structural support to prevent filter media collapse, ensures even flow distribution, and maintains cartridge integrity under operational pressures.

How does material selection impact inner core performance?

Materials like stainless steel 316L offer high corrosion resistance in seawater, while polymers like PP reduce weight and cost; choice affects durability, compatibility, and maintenance needs.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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