Coalescing Filters

Model: 2901054400

Core Technical Specifications

Filtration Grade: DDp General Industrial Coalescing Grade

Filtration Precision: Captures solid particles ≥1μm, liquid oil mist & condensed water aerosol ≥0.01μm

Outlet Residual Oil Content: ≤0.1 ppm

Filtration Efficiency: 99.99% removal efficiency for 0.01μm liquid oil & water aerosols

Filter Media: Multi-layer gradient hydrophobic borosilicate glass fiber composite, outer blue anti-re-entrainment hydrophobic foam sleeve, anti-static & oleophobic coating

Standard Dimensions

Outer Diameter: 92 mm

Total Length: 520 mm

Replacement Trigger: Warning alert at differential pressure ＞0.045 MPa; mandatory shutdown replacement when differential pressure ≥0.07 MPa

Initial Differential Pressure: ≤0.015 MPa

Sealing Structure: Integrated reinforced black plastic end caps with double fluorine rubber O-rings, zero air bypass leakage

Key Product Advantages

Integrated solid-liquid separation for conventional factory compressed air purification

After PDp280 particulate pre-filtration, this DDp grade element simultaneously intercepts pipeline rust, scale, dry dust, submicron oil mist and condensed water droplets that single-stage dust filters cannot fully remove. The outer blue hydrophobic foam prevents secondary liquid re-entrainment; aggregated liquid droplets drain rapidly to the filter bowl, supplying stable medium-cleanliness compressed air for most general production lines.

Deep-pleated media design for low airflow resistance & energy saving

Gradient folded glass fiber enlarges effective filtration area and forms smooth internal airflow channels. Stable low pressure drop is maintained under 24/7 full-load continuous operation, effectively cutting long-term power consumption of air compressor units.

Large liquid & dust holding capacity extends maintenance intervals

Thick multi-gradient hydrophobic fiber matrix stores massive condensed oil, water and solid contaminants, resisting rapid saturation under medium-humidity and medium-dust workshop environments, reducing frequent replacement labor and material costs.

Oil & hydrolysis resistant reinforced construction avoids secondary pipeline contamination

Hydrolysis-proof, oil-repellent borosilicate glass fiber matched with stainless steel support mesh eliminates fiber shedding, preventing contamination to downstream pneumatic valves, spraying equipment and general electronic assembly devices.

Working Principle

Pre-cleaned compressed air from PDp particulate filter flows outside-in through multi-layer hydrophobic borosilicate glass fiber media. Coarse solid particles above 1μm are trapped and stored in fiber layers; micro oil and water aerosols collide and agglomerate into large liquid droplets. The outer blue foam sleeve blocks droplets from being re-carried into airflow, and all condensed liquid flows down to the filter bowl drain port by gravity. Dry low-oil compressed air is delivered to subsequent activated carbon filter for terminal purification.

Application Industries

widely applied in:

General machining workshops, textile mills, packaging printing factories, small food processing lines, ordinary automotive repair spray booths, centralized large factor