Coalescing Filters

Part No: PD970F

Core Technical Specifications

Filtration Grade: PDp Fine Primary Dust Prefilter

Absolute Filtration Precision: Solid dry contaminants ≥3 μm (pipeline rust, metal shavings, oxide scale, workshop dry dust)

Particle Capture Efficiency: 99.999% for 3 μm solid particles

Filter Media: Multi-layer deep-pleated hydrophobic borosilicate glass fiber composite + thick black anti-static outer foam for pre-blocking large particles

Operating Limits

Max Working Pressure: 1.6 MPa

Continuous Operating Temperature: 2°C ~ 80°C

Standard Replacement Cycle: Replace after 4,000 operating hours or 12 months, whichever comes first; extendable to 8,000 hours in low-dust clean workshops

Sealing & Support Construction

End Caps: Reinforced corrosion-resistant black PA polyamide 4-hole locking end cap

Seal: Integrated full-circle NBR nitrile rubber gasket, zero air bypass leakage

Inner & Outer Cage: Double-layer perforated 304 stainless steel mesh, anti-collapse under continuous large-volume airflow

Key Product Advantages

Ultra-large dust holding capacity for heavy-dust industrial workshops

Deep-pleated gradient glass fiber matrix provides massive dust storage volume, resisting rapid clogging in metal machining, forging, sandblasting and other dusty environments, minimizing unplanned production downtime for filter replacement.

Ultra-low airflow resistance to reduce central compressor station energy consumption

Large-area deep-fold media optimizes internal air channels, maintaining stable low pressure drop under 24/7 full-load continuous operation, effectively cutting extra power consumption of large screw air compressors and long-term electricity costs.

Hydrolysis & abrasion resistant media without fiber shedding

Hydrolysis-proof borosilicate glass fiber matched with stainless steel support cage prevents fiber shedding under long-term humid high-flow airflow, avoiding secondary pipeline contamination to downstream coalescing media, large pneumatic valves and spraying equipment.

Exclusive 4-hole bayonet quick-swap design without full housing disassembly

Unique 4-hole central mandrel perfectly locks into PD970+F filter housing; a single operator can complete cartridge replacement within 3 minutes without removing the entire filter tank.

Working Principle

Raw unpurified compressed air flows outside-in through the filter cartridge:

Air first passes through outer thick black foam to trap large coarse solid particles;

All solid particles larger than 3μm are captured and stored inside gradient glass fiber media;

Application Industries

Large metal machining workshops, heavy metal forging plants, sandblasting workshops, textile printing factories, large packaging printing equipment, medium & large factory centralized air compressor stations, construction machinery air supply systems, full-automatic large pneumatic automation production lines, laser cutting equipment, food & beverage mass production.