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. Serial-number matching available for accurate fitment.
- 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 intake filter element engineered for ATN-series 185kW oil-free centrifugal compressors. Using micro-fiberglass media, it achieves over 99.5% filtration efficiency for particles of 3 μm and above, blocking dust and particulate from entering the compression chamber to protect the high-speed precision impeller and diffuser, and helping maintain ISO 8573-1 Class 0 oil-free air quality.
As a core spare part of the Ingersoll Rand centrifugal compressor intake filtration system, the ATN18504 is manufactured to Ingersoll Rand global technical standards and offers low initial pressure drop, high dust holding capacity and long service life, helping operators reduce energy consumption and maintenance 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 range) |
| Unit of Measure | EA (each) |
| Availability | Normally in supply |
Technical Specifications
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, to final resistance) |
| Beta Ratio β | β₃.₀ ≥ 200 |
With micro-fiberglass media, the ATN18504 achieves 99.5% efficiency at 3.0 μm, well above standard screw compressor air filters (F5, 98% @ 5 μm). This meets the high intake cleanliness demands of centrifugal compressors and protects the precision impeller and diffuser of 185kW units.
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 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 adds approx. 0.35% to compressor shaft power |
The Ingersoll Rand centrifugal intake filter design uses micro-fiberglass media with clean pressure drop about 40% lower than comparable alternatives and dust holding capacity about 89% higher, reducing compressor energy consumption and extending replacement intervals.
Dimensions and Installation
| Parameter | Value |
|---|---|
| Dimensions | Approx. φ420 × φ220 × 380 mm (OD × ID × height) |
| Effective Filter Area | Approx. 12–15 m² (pleated cartridge, unfolded) |
| Pleats / Pleat Spacing | Approx. 200–240 pleats, approx. 6–8 mm spacing |
| Mounting Interface | Flange / end-cap groove, mates with intake filter housing |
| Sealing | Polyurethane (PU) foam gasket integrated into end frame, seamless zero-leak fit |
Construction Materials
| Parameter | Value |
|---|---|
| Media | Micro-fiberglass |
| Media Weight | Approx. 120–150 g/m² |
| Support | Inner galvanized metal support mesh + outer protective mesh, prevents media collapse |
| End Caps | Polystyrene frame, lightweight, corrosion-resistant, incinerable |
| Seal | Polyurethane (PU) one-piece foam gasket, high elasticity, seamless fit |
| Adhesive | Polyurethane adhesive bonds end caps and media, heat-resistant, no debonding |
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 | Overall collapse differential ≥ 2.8 kPa |
| Features | Low initial pressure drop, high dust holding capacity, long replacement interval, zero-leak seal |
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 | 36 months in original sealed packaging, dry ambient conditions |
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 filters and filter media for removing particles from air
- GB/T 14295: Air filters
- GB/T 6165: Methods of testing air filter performance (efficiency and resistance)
Installation and Maintenance
Replacement Schedule
- 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 pressure differential alarm triggers (≥650 Pa)
Installation Steps
- Shut down and lock out: Turn off main power, apply lockout/tagout (LOTO), confirm the unit has fully stopped and depressurized.
- Open the intake filter housing: Release housing clamps or bolts, remove top cover or access door.
- Remove old element: Pull the old ATN18504 element straight up; check for any gasket residue left in the housing groove.
- Clean the housing interior: Wipe the inner wall and sealing surface with a clean cloth; ensure no dust, oil or foreign matter remains.
- Inspect new element: Verify part number ATN18504, check media for damage, pleats for deformation, and gasket for aging.
- Install new element: Place vertically into the housing center, ensuring the gasket seats evenly on the sealing surface without skew or twist.
- Reassemble housing: Refit cover, tighten bolts evenly 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 pressure differential gauge returns to normal (initial drop should be 220–300 Pa).
FAQ
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 cleaner intake air than screw compressors. The 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 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 alarm value of 650 Pa; ② the 6,000–8,000 hour or 8–12 month interval is reached; ③ visual inspection reveals media damage or gasket aging/deformation.
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 compatible with original intake filter housings.
Q5: Is one filter element enough?
A: Centrifugal compressor intake filters may use single or multiple elements depending on the intake filter assembly specification. Please provide the compressor serial number to confirm the correct quantity.
Related Parts
| Part Number | Name | Description |
|---|---|---|
| ATS11057 | Air Filter Element | ATS-series centrifugal compressor intake filter (110kW range) |
| ATN09504 | Air Filter Element | ATN-series centrifugal compressor intake filter (95kW range) |
| ATN10504 | Air Filter Element | ATN-series centrifugal compressor intake filter (105kW range) |
| ATN72018 | Air Filter Element | ATN-series large centrifugal compressor intake 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 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 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 so we can check the original parts diagram and confirm current supply information.