Coalescing Filters

Part No: 50075R

Core Technical Specifications

Outlet Residual Oil Content: ≤0.2 ppm, complies with ISO 8573-1 Class 3 standard

Filtration Efficiency: 99.99% removal efficiency for 1μm liquid aerosols

Filter Media: Multi-layer gradient hydrophobic borosilicate glass fiber composite, outer red oleophobic anti-re-entrainment foam sleeve with anti-static coating

Flow & Dimension Parameters

Color Identification: Red outer foam & end cap marking for R grade

Installation Style: Standard push-fit direct insertion

Overall Size: OD 75 mm, Height 505 mm

Continuous Operating Temperature: 1.5℃ ~ 65℃

Standard Replacement Cycle: Replace after 4,000 operating hours or 12 months, whichever comes first

Differential Pressure Service Thresholds

Warning Alarm: ΔP＞0.045 MPa

Mandatory Shutdown Replacement: ΔP≥0.07 MPa

Initial Differential Pressure: ≤0.013 MPa

Key Product Advantages

Primary Coalescing Barrier to Protect Downstream High-Grade Precision Filters

Installed right after the 50075P particulate prefilter, this R grade cartridge removes 1μm fine dust, bulk liquid water and coarse oil droplets that pass through the P stage. It drastically reduces liquid contamination load on M, S and A high-cost filter elements, extending their service life and cutting overall system maintenance expenses.

Large Liquid Holding Capacity for Heavy Moisture & Oil Working Conditions

Thick multi-gradient hydrophobic fiber matrix provides abundant oil & water storage volume, resisting rapid saturation in high-humidity, heavy-oil industrial environments. Suitable for air compressors without advanced aftercooler treatment.

Low Flow Resistance for Energy Saving

Deep-pleated glass fiber maximizes effective filtration area, maintaining stable low pressure drop under 24/7 full-load continuous operation, lowering extra power consumption of medium & large air compressor units.

Hydrolysis & Abrasion Resistant Fiber-Free Construction

Oleophobic borosilicate glass fiber paired with stainless steel support mesh eliminates fiber shedding under long-term humid compressed air operation, avoiding secondary pipeline contamination to downstream pneumatic valves and production equipment.

Working Principle

Coarse liquid water and large solid particles are blocked by outer red hydrophobic foam;

Micro oil & water aerosols collide and coalesce into large liquid droplets across multi-layer gradient glass fiber media;

Outer red anti-re-entrainment foam sleeve stops coalesced liquid droplets from being re-carried by high-speed airflow;