In natural gas processing, transmission, and end-use, oil mist—generated from compressors, pipelines, or storage equipment—poses critical risks: it clogs downstream valves/flowmeters, degrades gas quality, and shortens equipment lifespan. As a leading listed provider of environmental filtration solutions (Stock Code: 837936), LEFILTER engineered the 5 Micron Natural Gas Coalescing Filter Cartridge Caa33-5 to address this challenge. Designed for precise oil mist separation and reliable performance, it safeguards natural gas systems across industrial scenarios.
The Caa33-5 features a standardized structure compatible with most industrial natural gas filter housings, with customizable details to match specific on-site needs. Key parameters:
| Item | Specification | Description |
|---|
| Filtration Precision | 5 Micron (absolute) | Captures 99.9% of oil mist and solid particles ≥5μm |
| Outer Diameter | 108mm (±2mm) | Ensures tight fit with standard vertical/horizontal housings |
| Inner Diameter | 40mm (±1mm) | Optimizes gas flow, minimizing pressure drop |
| Effective Length | 800mm (±3mm) | Maximizes coalescing area for higher oil holding capacity |
| Overall Height | 880mm (±3mm) | Includes reinforced upper/lower end caps for easy installation |
| Rated Working Pressure | ≤8MPa | Leak-free operation in medium-to-high pressure gas systems |
| Operating Temp Range | -30℃~70℃ | Stable performance in onshore/offshore, cold/hot environments |
| Seal Type | 226-type Viton O-ring | Resists oil, natural gas, and chemical corrosion; ensures long-term sealing
|
The Caa33-5 leverages a 4-stage coalescing mechanism to efficiently separate oil mist from natural gas—combining mechanical interception, surface coalescence, and gravity drainage for unmatched purification:
Stage 1: Inlet Pre-Filtration
Contaminated natural gas enters the cartridge from the outer layer, first passing through a 304 stainless steel pre-filter mesh (pore size: 30μm). This layer traps large solid particles (rust, dust) and coarse oil droplets, preventing damage to inner coalescing media and ensuring uniform airflow distribution.
Stage 2: Core Coalescing Layer
Next, gas flows through LEFILTER’s proprietary polymeric coalescing media—a high-density blend of modified polyester and glass fibers. The media’s micro-porous structure and hydrophilic surface attract tiny oil mist droplets (≤5μm), which adhere to fiber surfaces, collide with each other, and "coalesce" into larger droplets (≥500μm) via surface tension.
Stage 3: Droplet Separation
Larger oil droplets, now too heavy to remain suspended in gas, flow downward along the cartridge’s inner wall (guided by a hydrophobic coating) to the bottom of the filter housing, where they are collected and drained via a 排污 valve (drain valve).
Stage 4: Final Polishing Filtration
To ensure zero oil mist carryover, the purified gas passes through an inner 5μm absolute filter layer—trapping any residual micro-droplets or particles. A 304 stainless steel inner skeleton reinforces the cartridge, preventing media deformation under high pressure and maintaining consistent flow rates.
Proprietary Polymeric Media: Developed in-house, the coalescing media offers 3x higher oil holding capacity than standard materials, extending service life to 8–12 months under normal conditions (reducing replacement frequency and downtime).
5μm Absolute Precision: Guarantees oil mist concentration in outlet gas ≤0.1mg/m³, meeting strict industrial standards for natural gas quality (e.g., ISO 13686 for pipeline gas).
Full Corrosion Resistance: All components (stainless steel mesh, Viton seals, polymeric media) resist natural gas, oil, and harsh chemicals—suitable for offshore, chemical, and high-humidity environments.
100% Factory Testing: Every Caa33-5 undergoes pressure decay testing (for airtightness) and oil separation efficiency testing before shipment, eliminating defects.
Tailored Solutions: We adjust dimensions (length, diameter), seal materials, or filtration precision to match your specific filter housing or gas quality requirements.
Fast Spare Parts Supply: With a large-scale production base and inventory system, we ensure on-time delivery of Caa33-5 cartridges and spare parts, avoiding production delays.
24/7 Technical Service: Our team provides real-time support via hotline/WhatsApp—from installation guidance to troubleshooting—to keep your gas systems running smoothly.
LEFILTER (Stock No.: 837936) is a public company specializing in environmental filtration, with decades of experience in oil, air, and water purification. Our products serve petroleum, chemical, steel, and power industries globally—backed by ISO 9001 quality certification and rigorous R&D capabilities.
Natural gas compressor stations (removing oil mist from compressed gas)
Long-distance gas pipelines (protecting valves, flowmeters, and regulators)
Urban gas distribution centers (ensuring clean gas for residential/commercial use)
Natural gas-fired generators (preventing oil contamination of combustion systems)
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