Coalescing Filters

Part No: 2901053700

Core Technical Specifications

Filter Media Structure

Outer white hydrophobic PU anti-re-entrainment drainage foam

Front built-in multi-layer borosilicate microglass pre-screen to trap residual liquid oil droplets

Mounting Method: Central male thread bayonet quick twist lock, double O-ring sealing design exclusive to Atlas QD+ series

Operating Limits

Max Working Pressure: 1.6 MPa (16 bar)

Continuous Operating Temperature: 1.5℃ ~ 60℃

Inlet Air Prerequisite: Must pass refrigerated/desiccant dryer + PD ultrafine coalescer; no liquid oil droplets allowed at inlet

Standard Replacement Cycle

1,200 working hours / 12 months under clean low-oil-load industrial conditions; shorten to 700–900 hours in dusty, high-humidity spray workshops. Replace when air has obvious oily odor or differential pressure ΔP ≥ 0.07 MPa.

Differential Pressure Replacement Thresholds

Initial pressure drop of new element: ≤0.015 MPa

Mandatory replacement alarm threshold: ΔP ≥ 0.07 MPa

Sealing & Support Construction

End Caps: Reinforced black PA polymer threaded locking head with integrated flow diversion ribs, double O-ring groove design

Seal System: Dual built-in NBR nitrile rubber full-circle gaskets, zero air bypass, resistant to aging caused by compressor oil and acidic condensate

Inner & Outer Support Cage: Double-layer perforated 304 stainless steel mesh, structural reinforcement to avoid carbon core deformation under full rated airflow

Key Product Advantages

Final-stage upgraded oil vapor removal barrier to produce ISO Class 0 100% oil-free compressed air

Glass fiber coalescing filters (DD/PD) can only remove liquid oil mist, while this QD+-grade upgraded element adsorbs invisible gaseous oil vapor that penetrates coalescer media. Larger carbon filling volume extends service life compared with standard QD120, completely eliminating oily odor and organic volatile contaminants to protect high-precision production equipment and finished product quality.

High-capacity encapsulated carbon matrix with longer stable service life

Uniform high-porosity coconut shell activated carbon filling provides 15% larger adsorption storage capacity than ordinary QD120. Front microglass pre-layer blocks residual liquid oil mist before contacting carbon core, avoiding premature carbon poisoning and extending effective service cycle.

Integrated anti-carbon-shedding sealed structure, no secondary pipeline contamination

The carbon adsorption core is fully wrapped and fixed by multi-layer stainless steel mesh and white drainage foam. Zero carbon powder shedding under long-term continuous airflow, preventing micro spray nozzles, laser optical lenses and cleanroom pipelines from blockage and carbon pollution.

Atlas optimized low-loss flow channel design to reduce compressor energy consumption

Smooth graded internal flow structure minimizes airflow resistance; dry-state pressure loss is far lower than generic aftermarket carbon filters, reducing continuous load and power consumption of medium screw compressors, cutting long-term factory electricity expenses.

Working Principle

Dry, pre-polished compressed air flows through the filter cartridge from outside to inside:

Front integrated microglass interception layer traps residual tiny liquid oil droplets and fine solid particles carried over from upstream PD ultrafine filter;

Clean dry gas penetrates the high-density upgraded activated carbon core; gaseous oil vapor, hydrocarbon and odor molecules are permanently adsorbed onto carbon micropores;

Outer stainless steel protective mesh prevents foam abrasion and carbon powder from flowing into downstream piping;

Oil-vapor-free, odorless compressed air exits from the inner stainless steel support tube and supplies terminal high-precision production equipment.

Application Industries

Medium automotive electrostatic spray booths, medium heavy-duty laser cutting equipment, pharmaceutical mass aseptic filling production lines, central cleanroom air supply for electronics assembly, food & beverage sterile packaging factories, medical central medical gas supply, multi-station precision automation production lines requiring strict ISO 8573-1 Class 0 oil-free compressed air.