Product
Ingersoll Rand ATN18504 Air Filter Element | 185kW Centrifugal Compressor
Genuine Ingersoll Rand ATN18504 air filter element for ATN-series 185kW oil-free centrifugal compressors. Micro-fiberglass media delivers 99.5% filtration efficiency at 3.0 μm, low initial pressure drop, and high dust-holding capacity to protect precision impellers and diffusers. Export-ready with serial-number matching and OEM documentation support.
- Export packaging & documentation support
- OEM / ODM customization available
- Sample and bulk order workflow
Ingersoll Rand ATN18504 Air Filter Element
Product Overview
ATN18504 is a genuine Ingersoll Rand air filter element engineered specifically for ATN-series 185kW oil-free centrifugal compressors. The element uses micro-fiberglass media rated at 99.5% efficiency for 3.0 μm particles, blocking dust and particulate from entering the compression chamber. This protects high-speed precision impellers and diffusers from erosion and maintains ISO 8573-1 Class 0 oil-free air quality.
As a core consumable in the Ingersoll Rand centrifugal compressor intake filtration system, ATN18504 is manufactured to Ingersoll Rand global technical standards. It combines low initial pressure drop, high dust-holding capacity, and extended service life to reduce energy consumption and unplanned maintenance downtime.
Technical Specifications
1. Filtration Performance
| Parameter | Value |
|---|---|
| Filtration rating | 3.0 μm |
| Filtration efficiency | 99.5% @ 3.0 μm |
| Filter class | F7 (medium-high efficiency, per EN 779 / ISO 16890) |
| Dust-holding capacity | Approx. 3.5 kg (at rated flow and final resistance) |
| Beta ratio β | β₃.₀ ≥ 200 |
ATN18504 uses micro-fiberglass media with 99.5% efficiency at 3.0 μm, significantly higher than standard screw compressor air filters (F5 class, 98% @ 5 μm). This meets the high intake cleanliness requirements of centrifugal compressors and protects the precision impellers and diffusers of 185kW units.
2. Flow and Pressure Drop
| Parameter | Value |
|---|---|
| Rated air flow | Approx. 25–40 Nm³/min (for 185kW centrifugal units) |
| Initial pressure drop | Approx. 220–300 Pa (clean, at rated flow) |
| Operating differential range | 300–550 Pa |
| Alarm / final resistance | Alarm: 650 Pa; Final: 800 Pa (replace immediately) |
| Pressure drop vs. energy | Every 100 Pa increase in intake loss raises compressor shaft power by approx. 0.35% |
The Ingersoll Rand centrifugal compressor intake filter design achieves approximately 40% lower clean pressure drop and 89% higher dust-holding capacity than comparable alternatives, reducing compressor energy consumption and extending replacement intervals.
3. Dimensions and Installation
| Parameter | Value |
|---|---|
| Dimensions | Approx. φ420 × φ220 × 380 mm (OD × ID × height) |
| Effective filtration area | Approx. 12–15 m² (pleated cartridge unfolded area) |
| Pleats / pleat spacing | Approx. 200–240 pleats, spacing approx. 6–8 mm |
| Mounting interface | Flange / end-cap groove type, mates with intake filter housing |
| Sealing | Polyurethane (PU) foam gasket integrated into media end frame, seamless zero-leak fit |
4. Materials of Construction
| Parameter | Value |
|---|---|
| Media | Micro-fiberglass |
| Media weight | Approx. 120–150 g/m² |
| Inner/outer support | Inner galvanized metal support mesh + outer protective mesh to prevent media collapse |
| End caps | Polystyrene frame, lightweight, corrosion-resistant, incinerable |
| Gasket | Polyurethane (PU) integrally foamed gasket, high elasticity, seamless fit |
| Adhesive | Polyurethane adhesive bonds end caps to media, high-temperature resistant |
5. Operating Conditions
| Parameter | Value |
|---|---|
| Operating temperature | Continuous: -20°C to +80°C; Max: 93°C (200°F) |
| Relative humidity | ≤95% RH, no condensation |
| Collapse pressure resistance | Overall ≥ 2.8 kPa |
| Features | Low initial pressure drop, high dust-holding capacity, extended replacement interval, zero-leak seal |
6. Service Life and Maintenance
| Parameter | Value |
|---|---|
| Service life | Approx. 6,000–8,000 hours (8–12 months) under standard conditions; 3,000–4,000 hours in high-dust environments |
| Shelf life | 36 months in original sealed packaging, dry, ambient temperature |
7. Standards
- ISO 5011: Inlet air cleaning equipment for internal combustion engines and compressors — performance testing
- ISO 16889: Hydraulic fluid power filters — multi-pass method for evaluating filtration performance
- ISO 16890 / EN 779: General ventilation air filters — classification
- ISO 29463: High-efficiency filters for removing particles from air
- GB/T 14295: Air filters
- GB/T 6165: Methods of testing air filter performance — efficiency and resistance
Maintenance and Installation
Replacement Interval
- Standard conditions: every 6,000–8,000 hours or 8–12 months, whichever comes first
- High-dust conditions (mining, building materials, cement, steel): every 3,000–4,000 hours
- Replace immediately when differential pressure alarm triggers (≥650 Pa)
Installation Steps
- Shut down and isolate power: Turn off main compressor power, apply lockout/tagout (LOTO), confirm the unit has fully stopped and is depressurized.
- Open the intake filter housing: Release housing clamps or bolts and remove the cover or access door.
- Remove the old element: Pull the old ATN18504 element straight up and check whether the gasket remains in the housing groove.
- Clean the housing interior: Wipe the housing inner wall and sealing surface with a clean cloth; ensure no dust, oil, or foreign matter remains.
- Inspect the new element: Verify part number ATN18504, check media for damage, pleat deformation, and gasket aging.
- Install the new element: Place vertically into the center of the housing, ensuring the gasket seats evenly on the sealing surface without skew or twisting.
- Reassemble the housing: Refit the cover, tighten bolts or clamps evenly to ensure a gap-free seal.
- Start up and leak-check: Run the compressor, listen for air leaks at the intake filter, and confirm the differential pressure gauge reads normal (initial pressure drop should be 220–300 Pa).
FAQ
Q1: Which Ingersoll Rand compressors does ATN18504 fit?
A: ATN18504 is designed for Ingersoll Rand ATN-series 185kW oil-free centrifugal compressors. If you are unsure about your model, provide the compressor serial number for precise matching.
Q2: How is ATN18504 different from a standard screw compressor air filter?
A: Centrifugal compressors require much higher intake cleanliness than screw compressors. ATN18504 uses micro-fiberglass high-efficiency media (99.5% @ 3.0 μm), while standard screw compressor filters are only F5 class (98% @ 5 μm). Using a standard filter can cause impeller fouling, dynamic imbalance, and even costly impeller damage.
Q3: How do I know when to replace the air filter element?
A: Replace when: (1) operating differential pressure reaches the alarm value of 650 Pa; (2) the 6,000–8,000 hour or 8–12 month interval is reached; or (3) visual inspection reveals media damage or gasket aging/deformation.
Q4: Is ATN18504 a genuine OEM part?
A: ATN18504 is a genuine Ingersoll Rand OEM replacement part, manufactured to Ingersoll Rand global technical standards and compatible with original intake filter housings.
Q5: Is one filter element enough?
A: Centrifugal compressor intake filter assemblies may use one or multiple elements. The quantity depends on the intake filter assembly specification. Please provide the compressor serial number for confirmation.
Related Parts
| Part Number | Description | Notes |
|---|---|---|
| ATS11057 | Air filter element | ATS-series centrifugal compressor intake filter (110kW class) |
| ATN09504 | Air filter element | ATN-series centrifugal compressor intake filter (95kW class) |
| ATN10504 | Air filter element | ATN-series centrifugal compressor intake filter (105kW class) |
| ATN72018 | Air filter element | ATN-series large centrifugal compressor intake filter (720kW class) |
| A29504376 | Air filter element | Oil-free screw compressor pre-filter (coarse) |
| A29504406 | Air filter element | Oil-free screw compressor main filter (H11 class) |
| A11516974 | Air filter element | Medium centrifugal compressor filter (panel type) |
| A13368674 | Air filter element | Large centrifugal compressor filter (panel type) |
Note: Technical parameters above are compiled from Ingersoll Rand centrifugal compressor filtration system specifications and industrial filtration standards. For 100% accurate matching, please provide the complete compressor serial number so we can check the original parts diagram and confirm current availability.