Product
Ingersoll Rand ATN18504 Air Filter Element | 185kW Centrifugal Compressor OEM Part
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. Export-ready with full traceability.
- Export packaging & documentation support
- OEM / ODM customization available
- Sample and bulk order workflow
Ingersoll Rand ATN18504 Air Filter Element
Product Overview
The ATN18504 air filter element is a genuine Ingersoll Rand inlet filter element engineered specifically for ATN series 185kW oil-free centrifugal compressors. It uses micro-fiberglass media with a filtration efficiency of over 99.5% for particles at 3.0 μm, effectively blocking dust and particulate matter from entering the compression chamber. This protects the high-speed precision impeller and diffuser from wear, helping to maintain ISO 8573-1 Class 0 oil-free air quality.
As a core spare part in the Ingersoll Rand centrifugal compressor inlet filtration system, the ATN18504 is manufactured to Ingersoll Rand global technical standards. It offers low initial pressure drop, high dust holding capacity, and long service life—reducing energy consumption and unplanned downtime for operators.
Basic Specifications
| Item | Specification |
|---|---|
| Part Number | ATN18504 |
| Brand | Ingersoll Rand |
| Part Name | Air Filter Element |
| Product Line | CC (Centrifugal Compressor) |
| Compatible Models | ATN series oil-free centrifugal compressors (185kW power range) |
| Unit of Measure | EA |
| Availability | Normally stocked |
Technical Specifications
1. Filtration Performance (Core Metrics)
| 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 with 99.5% efficiency at 3.0 μm and above—significantly higher than standard screw compressor air filters (F5 grade, 98% @ 5μm). It meets the stringent inlet air cleanliness requirements of centrifugal compressors, protecting the precision impeller and diffuser of 185kW units.
2. 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 Pressure | 300–550 Pa |
| Alarm / Final Resistance | Alarm: 650 Pa; Final: 800 Pa (must replace) |
| Pressure Drop vs. Energy | Each 100 Pa increase in inlet pressure loss raises compressor shaft power by approx. 0.35% |
The Ingersoll Rand centrifugal compressor inlet filter is designed with micro-fiberglass media. Its clean pressure drop is approximately 40% lower than comparable competitors, and dust holding capacity is about 89% higher—reducing compressor 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 cartridge unfolded area) |
| Pleats / Pleat Spacing | Approx. 200–240 pleats, spacing approx. 6–8 mm |
| Mounting Interface | Flange or end-cap groove type, mates with inlet filter housing |
| Sealing | Polyurethane (PU) foam gasket integrated into media end frame, seamless zero-leak fit |
4. Material Construction
| Parameter | Value |
|---|---|
| Media | Micro-fiberglass |
| Media Weight | Approx. 120–150 g/m² |
| Inner / Outer Support | Galvanized metal inner support mesh + outer protective mesh, prevents media collapse |
| End Caps | Polystyrene frame, lightweight, corrosion-resistant, incinerable |
| Seal | Polyurethane (PU) integrally foamed gasket, high elasticity, seamless fit |
| Adhesive | Polyurethane adhesive bonds end caps to media, high-temperature resistant, no debonding |
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 collapse differential pressure ≥ 2.8 kPa |
| Special Features | Low initial pressure drop, high dust holding capacity, long replacement interval, zero-leak seal |
6. Service Life and Maintenance
| Parameter | Value |
|---|---|
| Service Life | Standard conditions: approx. 6,000–8,000 hours (8–12 months); high-dust conditions: 3,000–4,000 hours |
| Shelf Life | Sealed original packaging, dry room temperature: 36 months |
7. Standards
- ISO 5011: Inlet air cleaning equipment for internal combustion engines and compressors—performance testing (efficiency and dust capacity)
- 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—performance testing
- GB/T 14295: Air filters
- GB/T 6165: Test methods for air filter performance (efficiency and resistance)
Standard 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, etc.): every 3,000–4,000 hours
- Replace immediately when differential pressure alarm triggers (≥650 Pa)
Installation Steps
- Shut down and lock out: Turn off main power, apply LOTO, confirm the unit has fully stopped and pressure is released.
- Open the inlet 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 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, pleat deformation, and gasket aging.
- Install the new element: Place vertically into the housing center, ensuring the gasket seats evenly on the sealing surface without skewing or twisting.
- Reassemble housing: Refit the cover and 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 inlet filter, and confirm the differential pressure gauge returns to normal (initial pressure 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 inlet air cleanliness than screw compressors. The ATN18504 uses micro-fiberglass media (99.5% @ 3.0μm), while standard screw compressor filters are only F5 grade (98% @ 5μm). 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 in three cases: (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; (3) visual inspection shows damaged media or an aged, deformed gasket.
Q4: Is the ATN18504 a genuine original part?
A: The ATN18504 is a genuine Ingersoll Rand original spare part, manufactured to Ingersoll Rand global technical standards and designed to fit original Ingersoll Rand inlet filter housings.
Q5: Is one filter element enough?
A: Centrifugal compressor inlet filter assemblies may use one or multiple elements. The exact quantity depends on the inlet filter assembly specification. Please provide the compressor serial number for confirmation.
Related Parts
| Part Number | Name | Description |
|---|---|---|
| ATS11057 | Air Filter Element | ATS series centrifugal compressor inlet filter (110kW range) |
| ATN09504 | Air Filter Element | ATN series centrifugal compressor inlet filter (95kW range) |
| ATN10504 | Air Filter Element | ATN series centrifugal compressor inlet filter (105kW range) |
| ATN72018 | Air Filter Element | ATN series large centrifugal compressor inlet filter (720kW range) |
| 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: Technical parameters above are compiled from 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 the latest availability. Request a quotation, datasheet, or sample for your project.