Asymmetric Sintered Metal Membrane Filter

Asymmetric Sintered Metal Membrane Filter

High-Precision Surface Filtration with High Flux and Low Pressure Drop

CMI asymmetric sintered metal membrane filters are advanced metallic filtration elements manufactured by sintering a fine-particle metal membrane layer onto a porous sintered metal substrate.

The outer membrane layer provides precise surface filtration, while the inner porous structure acts as a high-strength support with excellent permeability. This creates a highly efficient asymmetric filtration structure combining fine retention and high flow capacity.

Compared to conventional sintered metal filters, the membrane design enables significantly improved filtration accuracy while maintaining low pressure drop and stable long-term operation.

Key Features & Benefits

• Asymmetric dual-layer structure with membrane surface and porous support
• Surface filtration with precise cut-off (typically 0.1 – 3 μm)
• High flux with low differential pressure
• Excellent backwash, reverse pulse, and CIP cleaning performance
• Strong resistance to corrosion, abrasion, and chemical attack
• High temperature resistance up to 900°C (depending on material)
• High mechanical strength and dimensional stability
• 100% metallic construction with no media migration
• Suitable for high solids and demanding process conditions

Technical Specifications

• Length: up to 1500 mm
• Outside Diameter (OD): 56 – 64 mm
• Filtration Rating: 0.1 – 3 μm
• Structure: Thin sintered metal membrane layer on porous substrate

Customized sizes, materials, and configurations are available based on application requirements.

Available Materials

• Stainless Steel: 316L, 304L, 310S, 904L
• Titanium
• Hastelloy: C-22, C-276, XB-2
• Inconel: 600, 625, 800
• Monel: 400 series
• Nickel

Typical Applications

Chemical & Petrochemical Processing

• Decarbonization and fine filtration of process liquids
• Filtration of raw materials and intermediates
• Recovery of catalysts and ultrafine crystals
• Post-resin adsorption clarification
• Heat transfer oil purification
• Process and return water filtration

Water Treatment

• Security filtration for UF, RO, and EDI systems
• Post-ozone clarification
• Seawater desalination pre-filtration
• Final polishing before bottling or reuse

Pharmaceutical & Biotechnology

• Decarbonization of infusion and injection liquids
• Pre-filtration before terminal sterilization
• API clarification and intermediate processing
• Fine filtration for bulk pharmaceutical production

Food & Beverage

• Clarification of juice, beer, liquor, and mineral water
• Filtration of soy sauce, vinegar, and liquid condiments

Industrial Gas & Powder Filtration

• Powder interception in vacuum conveying systems
• Prevention of powder leakage (especially titanium elements)
• Filtration of steam, compressed air, and catalytic gases