Coalescing Filters

Part No: 901522

Core Technical Specifications

Absolute Filtration Accuracy: Solid particles, pipeline rust & sand contaminants ≥3 μm

Multi-layer deep-pleated high-strength polyester fiber media, outer lightweight hydrophobic PU pre-drain foam. Extra-large dust storage volume, resistant to long-term low-speed airflow fatigue and media breakage.

Max Working Pressure: 1.6 MPa

Continuous Operating Temperature: -10°C ~ 80°C

8,000 operating hours / 12 months (whichever comes first) under clean workshop environments; shorten to 3,000–4,000 hours for sandblasting, foundries and heavy dust workshops. Mandatory replacement when differential pressure ΔP ≥ 0.06 MPa.

Initial pressure drop of brand-new element: ≤0.010 MPa

Mandatory alarm replacement threshold: ΔP ≥ 0.06 MPa

End Cap & Base: Reinforced integrated black PA polymer bayonet lock base with built-in flow diversion channels

Seal System: One-piece molded NBR nitrile rubber O-ring, zero bypass leakage, resistant to compressor oil aging and acidic condensate corrosion

Inner & Outer Support Cage: Single-layer perforated 304 stainless steel mesh, lightweight anti-collapse reinforcement for stable small-medium airflow

Key Product Advantages

Front-line primary barrier to greatly extend service life of downstream coalescing & carbon filters

Installed as the first precision filter after water separator, KB grade intercepts massive pipeline rust, welding dust, sand particulates and bulk free liquid oil/water droplets. 

Large dust holding capacity with stable low differential pressure

Proprietary deep-pleated polyester media expands effective filtration area, stores massive solid dust without rapid pressure rise, perfectly matching non-stop continuous production for medium-dust workshops. Outer hydrophobic foam rapidly drains free liquid to filter bowl, avoiding liquid re-entrainment back into small-bore air pipeline.

High-temperature stable polyester media with zero fiber shedding

Polyester filter media maintains stable structure under 80°C long-term operating temperature, no softening, pulverization or fiber shedding. Zero fiber debris enters small industrial air piping to block mini spray guns, desktop laser optical lenses and miniature proportional solenoid valves.

Low permanent differential pressure energy-saving design to reduce small air compressor power consumption

Uniform gradient pleat layout delivers minimal airflow resistance over the full service cycle. Stable low backpressure reduces continuous motor loading of small screw air compressors and slashes long-term workshop electricity operating costs.

Working Principle

Small-medium-volume compressed air flows through the filter cartridge from outside to inside:

Large solid dust particles and free liquid water/oil droplets are trapped by outer hydrophobic foam and drain down to the filter bowl by gravity.

Fine solid particulates ≥3μm are fully intercepted and stored inside deep pleats of polyester media.

Outer anti-re-entrainment foam barrier prevents separated liquid oil/water from being re-carried by high-speed small-volume compressed airflow.

Collected liquid condensate is automatically discharged via external mini electronic zero-loss drain valve.

Particle-free primary clean air flows downstream to 901523 medium coalescing filter for secondary high-precision purification.

Application Industries

Small automotive component auxiliary air supply, metal cutting & welding mini production lines, laboratory precision pneumatic instruments, small general machinery pneumatic tools, mini pharmaceutical packaging air supply, compact electronics workshop common pneumatic pipelines with medium dust pollution.