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.
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Ingersoll Rand ATN18504 Air Filter Element
Product Overview
ATN18504 is a genuine Ingersoll Rand air filter element for centrifugal compressor intake filtration, engineered specifically for ATN-series 185kW oil-free centrifugal compressors. The element uses micro-fiberglass media rated at 99.5% filtration efficiency for 3.0 μm particles, blocking dust and particulate matter from entering the compression chamber to protect high-speed precision impellers and diffusers and to help maintain ISO 8573-1 Class 0 oil-free air quality.
As a core consumable in the Ingersoll Rand centrifugal compressor intake system, ATN18504 is built 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.
Basic 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 (each) |
| Availability | Normally stocked |
Technical Parameters
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, final resistance) |
| Beta Ratio (β) | β₃.₀ ≥ 200 |
The micro-fiberglass media achieves 99.5% efficiency at 3.0 μm, well above standard screw compressor air filters (F5, 98% @ 5 μm), meeting the higher intake cleanliness requirements of centrifugal compressors and protecting the precision impellers and diffusers of 185kW units.
2. Flow and Resistance
| Parameter | Value |
|---|---|
| Rated Air Flow | Approx. 25–40 Nm³/min (for 185kW-class centrifugal units) |
| Initial Pressure Drop | Approx. 220–300 Pa (clean, rated flow) |
| Operating Differential Range | 300–550 Pa |
| Alarm / Final Resistance | Alarm: 650 Pa; Final: 800 Pa (replace immediately) |
| Pressure Drop vs. Energy | Each 100 Pa increase in intake loss raises compressor shaft power by approx. 0.35% |
Designed with micro-fiberglass media, the Ingersoll Rand centrifugal intake filter delivers approximately 40% lower clean pressure drop and approximately 89% higher dust holding capacity than comparable alternatives, reducing energy consumption and extending replacement intervals.
3. Dimensions and Installation
| Parameter | Value |
|---|---|
| Dimensions | Approx. φ420 × φ220 × 380 mm (OD × ID × height) |
| Effective Filter Area | Approx. 12–15 m² (pleated media) |
| Pleats / Pleat Spacing | Approx. 200–240 pleats, approx. 6–8 mm spacing |
| Mounting Interface | Flange / end-cap groove connection to intake filter housing |
| Sealing | Polyurethane (PU) foam gasket integrated into end frame, seamless zero-leak fit |
4. Construction Materials
| Parameter | Value |
|---|---|
| Media | Micro-fiberglass |
| Media Weight | Approx. 120–150 g/m² |
| Inner / Outer Support | Galvanized metal inner support mesh + outer protective mesh to prevent media collapse |
| End Caps | Polystyrene frame, lightweight, corrosion-resistant, incinerable |
| Gasket | One-piece polyurethane (PU) foam gasket, high elasticity, seamless fit |
| Adhesive | Polyurethane adhesive bonding end caps to media, high-temperature resistant, no delamination |
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, long replacement interval, zero-leak sealing |
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 conditions |
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 air filters (HEPA and ULPA) — performance testing
- GB/T 14295: Air filters
- GB/T 6165: Methods for performance testing of air filters (efficiency and resistance)
Maintenance and Installation
Replacement Intervals
- Standard conditions: every 6,000–8,000 hours or 8–12 months, whichever comes first
- High-dust environments (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 lock out: Turn off the 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; check whether the gasket remains in the housing groove.
- Clean the housing interior: Wipe the housing inner walls and sealing surfaces with a clean cloth; ensure no dust, oil, or foreign objects remain.
- Inspect the new element: Verify part number ATN18504; check media for damage, pleats for deformation, and gasket for aging.
- Install the new element: Place the new element vertically in the center of the housing, ensuring the gasket seats evenly on the sealing surface without skew or twist.
- Reassemble the housing: Refit the cover and evenly tighten bolts or secure clamps 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 whether it fits your model, provide the compressor serial number and we will match it precisely.
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 (98% @ 5 μm). Using a standard filter can cause impeller fouling, 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 650 Pa alarm value; (2) the 6,000–8,000 hour or 8–12 month interval is reached; or (3) visual inspection shows media damage or gasket aging/deformation.
Q4: Is ATN18504 a genuine OEM part?
A: ATN18504 is a genuine Ingersoll Rand part manufactured to Ingersoll Rand global technical standards and designed for Ingersoll Rand original intake filter housings.
Q5: Is one filter element enough?
A: Centrifugal compressor intake filters may use one or multiple elements depending on the intake filter assembly specification. Provide the compressor serial number to confirm the correct configuration.
Related Parts
| Part Number | Name | Description |
|---|---|---|
| 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: The technical parameters above are compiled from Ingersoll Rand centrifugal compressor filtration system specifications and industrial filtration standards. For 100% accurate matching, provide the complete compressor serial number so we can check the original parts diagram and confirm current availability.