Both are high-precision coalescing filter cartridges made of borosilicate glass fiber sintered + PVDF bonded, used for the removal of oil mist, water vapor, and fine particles. 51-230-50-CR is the imperial standard, and 12.32.5CK is an equivalent replacement model.

 

 I. Basic Information of 51-230-50-CR

 

- Model: 51-230-50-CR (also written as 51-230-50C)

 

- Structure: Cylindrical, glass fiber sintered depth filtration, open at both ends/optional end caps

 

- Dimensions (mm): Inner diameter 51.2, Outer diameter 62.5, Length 230

 

- Filter Media: Borosilicate glass microfiber + PVDF (polyvinylidene fluoride) bonding, hydrophobic and oleophobic

 

- Accuracy/Efficiency: 0.1 μm, Efficiency 99.99%+ (coalescing oil/water removal)

 

- Operating Temperature: -50℃ to +150℃ (air)

 

- Pressure Resistance/Strength: Burst pressure ≥ 5.0 bar; Collapse resistance ≥ 2.0 bar

 

- Initial Pressure Difference: ≤ 2.8 kPa (@6 (m/min, 25℃ air)

 

 II. Basic Information of 12.32.5CK (Equivalent Replacement)

 

- Model: 12.32.5CK (European series, fully interchangeable with 51-230-50-CR)

 

- Dimensions (mm): Inner diameter 51, Outer diameter 62, Length 230 (Tolerance matching)

 

- Filter Media: Same material (Borosilicate glass fiber + PVDF), Hydrophobic coalescing type

 

- Accuracy/Efficiency: 0.1 μm, 99.99%+ Oil mist/water droplet removal

 

- Temperature/Pressure: Same as 51-230-50-CR (-50℃~150℃, 5 bar)

 

- Interface: Standard 226/222 or direct insertion type, compatible with filter housings of the same specifications

 

 III. Model Code Explanation

 

- 51-230-50-CR

 

- 51: Inner diameter 51 mm

 

- 230: Length 230 mm

 

- 50: Glass fiber thickness/grade (50 = Standard coalescing)

 

- CR: Coalescing Resin

 

- 12.32.5CK

 

- 12: Series code (Precision coalescing)

 

- 32: Outer diameter 32 (unit 1/10 inch = 62 mm)

 

- 5: Precision 0.1 μm

 

- CK: Coalescing Kynar (Kynar = PVDF bonding)

 

 IV. Key Performance and Features

 

1. Ultra-high precision coalescing: 0.1 μm grade, removes oil mist, water vapor, and solid particles, with residual oil as low as 0.01 mg/m³.

 

2. Hydrophobic and Oleophobic: PVDF bonding, non-absorbent and non-sticky to oil, easy to regenerate via backflushing/rinsing.

 

3. High Temperature and Corrosion Resistance: -50℃~150℃, resistant to mineral oils, synthetic oils, acids, alkalis, and most organic solvents.

 

4. High Rigidity and Long Lifespan: Sintered integrated structure, not easily deformed, no fiber shedding, lifespan approximately 2000–4000 hours.

 

5. Washable and Reusable: Low-pressure air backflushing or neutral solvent cleaning, reducing costs.

 

 V. Typical Applications

 

- Air Compressor Post-treatment: Oil mist and water removal, protecting dryers/precision filters

 

- Compressed Air Purification: Spraying, pneumatic instruments, food/pharmaceutical air

 

- Vacuum Pumps/Blowers: Inlet air oil and dust removal

 

- Industrial Gas Filtration: Removal of impurities from high-purity gases such as nitrogen and carbon dioxide.0-50-CR, 12.32.5CK glass fiber sintered filter element

 

Leah      Sales Manager

Email:  [email protected]    

Mob & WhatsApp & Wechat & Skype: (+86)19937372138

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