Coalescing Filters

Part No: 88343124 

Core Technical Specifications

Filtration Grade: DP Primary Dust & Liquid Prefilter

Absolute Filtration Precision: Solid particles ≥3 μm, bulk free water droplets

Filtration Efficiency: 99.9% capture efficiency for 3μm solid dust, rust, pipeline debris

Filter Media Structure: Multi-layer gradient deep-pleated cellulose-glass fiber composite, outer white thick porous foam for trapping large water droplets and coarse dust

Overall Dimensions: Total length 425 mm, Outer Diameter 92 mm, Net Weight 0.55 kg

Continuous Operating Temperature: -20°C ~ 65°C

Standard Replacement Cycle: 4,000 operating hours under clean industrial conditions; shorten to 2,000–3,000h for dusty/high-humidity workshops

Differential Pressure Replacement Thresholds

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

Mandatory replacement alarm trigger point: ΔP ≥ 0.06 MPa

Sealing & Support Construction

End Caps: Impact-resistant black PA polymer locking end cap with flow diversion ribs

Sealing Ring: Integrated full-circle NBR nitrile rubber O-ring, zero air bypass leakage, anti-aging against acidic condensate

Inner & Outer Support Cage: Double-layer perforated 304 stainless steel mesh, anti-collapse under full rated airflow

Key Product Advantages

First-stage front protective barrier to extend service life of all rear precision filter elements

Installed at the very front of the four-stage filtration system, this DP prefilter intercepts pipeline rust, welding slag, sand dust, bulk condensed free water and large liquid oil droplets before they reach GP, HE and AC filters. It greatly reduces particle and liquid load on subsequent fine filter cartridges, cutting overall factory spare parts and maintenance costs.

High dust & water holding capacity, low early pressure rise

Thickened composite fiber + outer thick white foam double interception structure, massive dust storage space and liquid drainage capacity. Even in humid, dusty environments, it avoids rapid pressure differential increase and frequent early replacement.

Stable media structure, no fiber shedding secondary pollution

Composite fiber with heat-set solidification treatment, matched with double-layer stainless steel support mesh; fiber powder will not fall off into pipelines, protecting downstream pneumatic valves, spray guns and precision equipment from blockage.

Ultra-low initial pressure drop, reduce compressor power consumption

Optimized pleat spacing and uniform pore distribution minimize airflow resistance at startup. Stable low backpressure reduces continuous energy loss of medium screw compressors, lowering long-term electricity operating expenses.

Working Principle

gravity drains most free water down to the filter bowl;

Remaining fine dust and micro water droplets are intercepted by multi-layer deep-pleated composite fiber media;

Preliminary cleaned air flows downstream into the GP medium coalescing filter for secondary oil-water separation;

Accumulated condensate in filter bowl is automatically discharged via electronic/automatic drain valve.

Application Industries

General metal machining workshops, medium laser marking & cutting equipment, textile printing plants, packaging automation production lines, standalone medium screw compressor stations, plastic injection molding auxiliary air supply, small food packaging equipment, workshop general pneumatic tool air supply.