Coalescing Filters

Part No: 2901300006

Core Technical Specifications

Filtration Grade: DD General Purpose Medium Coalescing Grade

Absolute Filtration Accuracy: Solid particles & liquid oil/water aerosols ≥1 μm

Filter Media Structure: Multi-layer gradient borosilicate microglass composite, outer blue hydrophobic & oleophobic PU drainage foam, deep pleated design for high dirt holding capacity, built-in anti-re-entrainment backflow barrier

Flow & Dimension Parameters

Compatible Vessel: Atlas Copco DD130+ threaded inline filter housing

Continuous Operating Temperature: 1.5℃ ~ 80℃

Standard Replacement Cycle

4,000 working hours / 12 months under clean industrial air conditions; shorten to 2,000–3,000 hours in dusty, high-humidity spray workshops. Replace when differential pressure ΔP ≥ 0.06 MPa.

Differential Pressure Replacement Thresholds

Initial pressure drop of new element: ≤0.012 MPa

Mandatory replacement alarm threshold: ΔP ≥ 0.06 MPa

Sealing & Support Construction

End Caps: Reinforced black PA polymer threaded locking head with large-area flow diversion ribs

Key Product Advantages

Complete one-piece maintenance kit, matching double seals to eliminate air leakage

This OEM full service kit integrates filter element and matching dual sealing gaskets, avoiding air bypass and pressure loss caused by aging, lost or mismatched seals during maintenance, fully restoring filter sealing performance.

Second-stage medium polishing barrier to protect downstream PD ultrafine and QD carbon filters

Installed after primary coarse pre-filter, this DD130+ element intercepts massive bulk condensed water, large oil droplets and 1μm oil mist under medium high flow. It drastically reduces liquid contamination load on downstream high-precision filter elements, extends their service life and cuts factory spare parts cost.

High dirt and liquid holding capacity for stable long continuous operation

Extra deep-pleated gradient microglass matrix stores large volumes of oil and condensate. Outer blue drainage foam accelerates liquid separation and gravity backflow, slowing pressure rise in medium-duty workshop air systems and reducing unplanned production downtime from frequent filter replacement.

Heat-stabilized media, zero fiber shedding to avoid medium pipeline secondary contamination

Heat-cured borosilicate microglass composite paired with double stainless steel support mesh prevents glass fiber powder shedding into medium-diameter central air piping, protecting medium-format spray booth equipment, standard laser cutting lenses and process proportional solenoid valves from severe clogging failures.

Low permanent differential pressure design to reduce medium screw compressor power consumption

Uniform wide-gradient pore layout minimizes airflow resistance under rated full flow throughout the entire service cycle. Stable low backpressure lowers continuous running load of medium screw compressors, cutting long-term factory electricity operating expenses.

Working Principle

Pre-filtered medium-volume compressed air flows through the cartridge from outside to inside:

Residual massive water droplets and fine solid contaminants are trapped by the outer blue hydrophobic foam and drain into the medium filter bowl via gravity.

1μm oil-water micro-aerosols collide and coalesce into large separable liquid droplets while passing through multi-layer gradient borosilicate microglass media.

The outer anti-re-entrainment foam prevents separated liquid oil from being re-carried by high-speed medium-volume compressed airflow.

Collected oil and condensate are discharged automatically via electronic float drain valve.

Medium-clean dry compressed air flows downstream to the PD130+ ultrafine coalescing filter for further precision purification.

Application Industries

Medium automotive electrostatic spray booths, standard laser marking & cutting production lines, pharmaceutical medium-scale aseptic filling workshops, electronics factory central cleanroom air supply, food & beverage medium sterile packaging plants, multi-station medium automation production lines, medium plastic injection molding factory centralized air supply.