CMI sintered metal breather vent and pressure equalizer component with custom housing

Sintered Metal Breathers & Pressure Equalizers

CMI Sintered Metal Breathers & Pressure Equalizers provide rapid, bidirectional airflow for industrial enclosures and reservoirs, preventing vacuum formation and pressure build-up without sacrificing sealing integrity. Manufactured from premium 316L Stainless Steel or Hastelloy, these rigid porous components filter out dust, debris, and moisture. Available with optional hydrophobic coatings for IP-rated outdoor protection, CMI breathers deliver an exceptionally durable, flame-resistant alternative to fabric vent patches and a high-fidelity alternative to standard OEM catalog parts.

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Sintered Metal Breathers & Pressure Equalizers

CMI Sintered Metal Breathers and Pressure Equalizers are heavy-duty porous metal venting components engineered to provide rapid pressure equalization while maintaining a reliable barrier against external contaminants.

Designed for sealed or semi-sealed industrial enclosures, gearboxes, and storage vessels, these rugged breathers allow gases to pass freely through a controlled micron-rated porous structure.

This continuous breathability helps prevent internal vacuum formation or dangerous pressure build-up caused by thermal expansion, altitude changes, or filling cycles—without sacrificing enclosure sealing integrity.

Technical Specifications & Capabilities

Available Materials 316L Stainless Steel, Hastelloy®, Inconel®, Nickel, Titanium
Thread & Connections NPT (1/8", 1/4", 1/2", 3/4"), Metric, Flanged, or Custom Press-fit
Surface Treatments Optional hydrophobic & oleophobic treatments for water and oil repellency
Industrial Protection Designed to support IP65 / IP66 / IP67 enclosure protection ratings

Key Advantages for Severe Environments

Explosion & Flame Arresting

The rigid sintered metal matrix acts as an inherent flame barrier, making it ideal for hazardous industrial environments.

Hydrophobic Performance

Optional surface treatments repel water, moisture, and oil while maintaining full air permeability.

High Structural Strength

Resistant to mechanical shock, aggressive chemicals, and high-pressure industrial washdown environments.

No Media Migration

Eliminates the risk of fiber shedding or media tearing that could contaminate sensitive equipment or lubricants.

Typical Applications

  • Industrial Enclosures: Outdoor instrument housings, sensor boxes, and electronic cabinets requiring IP-rated venting
  • Fluid Power & Storage: Hydraulic reservoirs, lubrication tanks, chemical storage vessels, and bulk tank vents
  • Power Generation & Machinery: Gearbox vents, motor breathers, and transformer pressure balancing systems
  • Specialty Equipment: Rate-of-rise pressure devices, industrial mold vents, and battery housings

Custom OEM & Direct Interchangeable Solutions

Looking for an alternative to expensive catalog brands with long lead times? CMI specializes in precision-manufactured porous metal breathers customized to your exact flow rate, pressure drop, dimensional, and installation requirements.

We provide high-fidelity, drop-in replacement solutions for standard industrial venting configurations while helping customers improve supply chain flexibility and reduce procurement risks.

Optimize Your Industrial Venting System

Contact the CMI Engineering Team for performance evaluation, flow rate analysis, and rapid prototyping support.

📩 Technical Consultation: sales@cmifiltration.com

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Technology

At CMI, technology is more than just a manufacturing process; it is the science of precision separation. Our multidisciplinary approach combines advanced metallurgy, fluid dynamics, and rigorous quality validation to solve the world’s most challenging filtration tasks in the hydrogen, power, and high-purity water sectors.

Lab Testing & Quality Validation

Ensuring absolute reliability through rigorous laboratory analysis and international certification. From Bubble Point testing to full material traceability (EN 10204…

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Filtration Fundamentals

A comprehensive guide to the core principles of filtration technology. Understand the fundamental physics of pressure drop, micron ratings, and…

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Porous Media Technology

Explore the advanced metallurgy of sintered porous structures. We specialize in engineering high-permeability media from stainless steel, titanium, and nickel…

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Regeneration & Maintenance Protocols

Maximized filter lifespan through scientific regeneration techniques. We provide standardized cleaning and maintenance protocols to ensure your sintered metal elements…

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Separation & Coalescing Science

Advanced solutions for gas-liquid and liquid-liquid separation. Our coalescing technology utilizes deep-bed micro-fiber and sintered media to remove sub-micron droplets…

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Vessel & System Engineering

Expertly engineered filtration housings and integrated systems compliant with ASME VIII, PED 2014/68/EU, and AD2000 standards. We bridge the gap…

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Get a Quote

Our fabrication experts are ready to help you with custom-made filter housing and fabricated metal filter vessel solutions. Contact us with your specific requirements for a customized quote.

Our Services

Comprehensive filtration solutions from design to maintenance and support

Replacement & Cross Reference Solutions

CMI offers replacement and cross reference filtration solutions compatible with major brands, providing reliable performance, cost efficiency, and flexible supply.

Filtration System Integration & Skid Solutions

CMI delivers complete filtration system integration and skid-mounted solutions with piping, valves, and instrumentation, designed for reliable industrial operation and easy installation.

Global Project Delivery & Logistics Coordination

CMI provides global project delivery and logistics coordination services to ensure safe, efficient, and reliable shipment of filtration equipment worldwide.

Filtration Testing & Validation Support

CMI provides filtration testing and validation support to ensure filtration performance, optimize system design, and reduce operational risks.

After-Sales Support & Spare Parts Supply

CMI provides after-sales support and spare parts supply for filtration systems, ensuring reliable operation, reduced downtime, and long-term system performance.

Custom Engineering & OEM Fabrication

Custom engineering and OEM fabrication services for industrial filtration equipment, including filter housings, pressure vessels, and non-standard filtration systems.