Product
Ingersoll Rand ATN18504 Air Filter Element | ATN 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.
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Ingersoll Rand ATN18504 Air Filter Element
Product Overview
ATN18504 is a genuine Ingersoll Rand intake air filter element engineered for ATN-series 185kW oil-free centrifugal compressors. The micro-fiberglass media achieves over 99.5% filtration efficiency at 3.0 μm, blocking dust and particulate matter from entering the compression chamber. This protects the high-speed precision impeller and diffuser 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, the ATN18504 is manufactured to Ingersoll Rand global technical standards. It offers low initial pressure drop, high dust-holding capacity, and extended service life—helping operators reduce energy consumption and unplanned downtime.
Key Specifications
| Item | Specification |
|---|---|
| Part Number | ATN18504 |
| Brand | Ingersoll Rand |
| Component | Air Filter Element |
| Product Line | CC (Centrifugal Compressor) |
| Compatible Models | ATN-series oil-free centrifugal compressors (185kW class) |
| Unit of Measure | EA |
| Availability | In stock |
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 |
The ATN18504 uses micro-fiberglass media to capture 99.5% of particles at 3.0 μm and above—far exceeding standard screw compressor air filters (F5, 98% @ 5 μm). This meets the stringent intake cleanliness requirements of centrifugal compressors and protects the 185kW unit's precision impeller and diffuser.
Flow and Pressure Drop
| Parameter | Value |
|---|---|
| Rated Air Flow | Approx. 25–40 Nm³/min (for 185kW class centrifugal units) |
| Initial Pressure Drop | Approx. 220–300 Pa (clean, at rated flow) |
| Operating Differential | 300–550 Pa |
| Alarm / Final Resistance | Alarm: 650 Pa; Final: 800 Pa (replace immediately) |
| Energy Impact | Every 100 Pa increase in intake pressure loss raises compressor shaft power by approx. 0.35% |
Designed with micro-fiberglass media, the Ingersoll Rand centrifugal compressor intake filter delivers approximately 40% lower clean pressure drop and 89% higher dust-holding capacity than comparable competitors—reducing energy consumption and extending replacement intervals.
Dimensions and Installation
| Parameter | Value |
|---|---|
| Dimensions | Approx. φ420 × φ220 × 380 mm (OD × ID × H) |
| Effective Filter Area | Approx. 12–15 m² (pleated media) |
| Pleats / Pitch | Approx. 200–240 pleats, pitch approx. 6–8 mm |
| Mounting Interface | Flange / end-cap slot type, mates with intake filter housing |
| Sealing | Polyurethane (PU) foam gasket integrated into end frame for zero-leak fit |
Construction Materials
| Parameter | Value |
|---|---|
| Media | Micro-fiberglass |
| Media Weight | Approx. 120–150 g/m² |
| Support Grid | Inner galvanized metal mesh + outer protective mesh to prevent media collapse |
| End Caps | Polystyrene frame—lightweight, corrosion-resistant, incinerable |
| Gasket | Polyurethane (PU) one-piece foam gasket, high elasticity for seamless sealing |
| Adhesive | Polyurethane adhesive bonds end caps to media; heat-resistant, no debonding |
Operating Limits
| Parameter | Value |
|---|---|
| Operating Temperature | Continuous: -20°C to 80°C; Max: 93°C (200°F) |
| Relative Humidity | ≤95% RH, non-condensing |
| Collapse Pressure | ≥ 2.8 kPa overall |
| Features | Low initial pressure drop, high dust-holding capacity, long service life, zero-leak seal |
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 sealed original packaging, dry, ambient temperature |
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 – Air filters for general ventilation: classification
- ISO 29463 – High-efficiency air filters (HEPA and ULPA): performance testing
- GB/T 14295 – Air filters
- GB/T 6165 – Test methods for 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
- Pressure alarm: Replace immediately when differential reaches ≥650 Pa
Installation Steps
- Shut down and lock out: Turn off main power, apply LOTO, confirm the unit has fully stopped and depressurized.
- Open the intake filter housing: Release latches or bolts and remove the cover or access door.
- Remove the old element: Pull the old ATN18504 straight up and check whether the gasket remains in the housing groove.
- Clean the housing interior: Wipe the inner walls and sealing surface with a clean cloth—no dust, oil, or debris.
- Inspect the new element: Verify part number ATN18504; check media for damage, pleats for deformation, and gasket for aging.
- Install the new element: Lower it vertically into the center of the housing, ensuring the gasket seats evenly without twisting or misalignment.
- Reassemble the housing: Refit the cover and tighten bolts or latches evenly for a gap-free seal.
- Start up and leak-check: Run the compressor, listen for air leaks at the intake filter, and confirm the pressure gauge reads normal (initial drop should be 220–300 Pa).
Frequently Asked Questions
Q1: Which Ingersoll Rand compressors does the ATN18504 fit?
A: The 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 and we will match it precisely.
Q2: How is the ATN18504 different from a standard screw compressor air filter?
A: Centrifugal compressors require much higher intake cleanliness than screw compressors. The ATN18504 uses micro-fiberglass media (99.5% @ 3.0 μm), while standard screw compressor filters are only F5 grade (98% @ 5 μm). Using a standard filter can lead to 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 reaches the 650 Pa alarm setpoint; (2) the 6,000–8,000 hour or 8–12 month interval is reached; or (3) visual inspection reveals media damage or a hardened, deformed gasket.
Q4: Is the ATN18504 a genuine OEM part?
A: Yes, the ATN18504 is a genuine Ingersoll Rand part manufactured to Ingersoll Rand global technical standards and designed to fit original intake filter housings.
Q5: Is one filter element sufficient?
A: Centrifugal compressor intake filter assemblies may use single 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 grade) |
| A11516974 | Air Filter Element | Medium centrifugal compressor filter (panel type) |
| A13368674 | Air Filter Element | Large centrifugal compressor filter (panel type) |
Note: The technical parameters above are based on Ingersoll Rand official centrifugal compressor filtration system specifications and industrial filtration standards. For 100% accurate matching, please provide the complete compressor serial number. We will check the original parts diagram and confirm current supply information.