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. Model-matched by serial number for accurate procurement.
- Export packaging & documentation support
- OEM / ODM customization available
- Sample and bulk order workflow
Product Overview
The Ingersoll Rand ATN18504 air filter element is a genuine intake filter designed specifically for ATN-series 185kW oil-free centrifugal compressors. Manufactured with micro-fiberglass media, it 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, helping maintain ISO 8573-1 Class 0 oil-free air quality.
As a core spare part for the centrifugal compressor intake filtration system, the ATN18504 is built to Ingersoll Rand global technical standards. It offers low initial pressure drop, high dust-holding capacity, and extended service life—reducing energy consumption and unplanned downtime for operators.
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 range) |
| Unit of Measure | EA |
| Availability | In stock |
Filtration Performance
| Parameter | Value |
|---|---|
| Filtration Rating | 3.0 μm |
| Efficiency | 99.5% @ 3.0 μm |
| Filter Class | F7 (per EN 779 / ISO 16890) |
| Dust Holding Capacity | Approx. 3.5 kg (at rated flow, terminal resistance) |
| Beta Ratio β | β₃.₀ ≥ 200 |
The micro-fiberglass media captures 99.5% of particles at 3.0 μm and above—significantly higher than standard screw compressor filters (F5, 98% @ 5μm)—meeting the stringent intake cleanliness requirements of 185kW centrifugal compressors.
Flow and Pressure Drop
| Parameter | Value |
|---|---|
| Rated Air Flow | Approx. 25–40 Nm³/min (for 185kW class) |
| Initial Pressure Drop | Approx. 220–300 Pa (clean, rated flow) |
| Operating Differential | 300–550 Pa |
| Alarm / Terminal Resistance | Alarm: 650 Pa; Terminal: 800 Pa (replace immediately) |
| Energy Impact | Each 100 Pa increase in intake loss raises shaft power by approx. 0.35% |
Compared to typical competitors, the ATN18504 offers approximately 40% lower clean pressure drop and 89% higher dust-holding capacity, reducing energy costs and extending replacement intervals.
Dimensions and Installation
| Parameter | Value |
|---|---|
| Dimensions (OD × ID × H) | Approx. φ420 × φ220 × 380 mm |
| Effective Filter Area | Approx. 12–15 m² (pleated) |
| Pleats / Pitch | Approx. 200–240 pleats, pitch approx. 6–8 mm |
| Mounting Interface | Flange / end-cap groove, mates with intake filter housing |
| Sealing | Polyurethane (PU) foam gasket, integrated into end frame, zero-leak fit |
Materials of Construction
| Component | Material |
|---|---|
| Filter Media | Micro-fiberglass |
| Media Weight | Approx. 120–150 g/m² |
| Support Mesh | Inner galvanized metal mesh + outer protective mesh |
| End Caps | Polystyrene frame, lightweight, corrosion-resistant, incinerable |
| Gasket | Polyurethane (PU) one-piece foam gasket, high elasticity |
| Adhesive | Polyurethane, 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 | ≥ 2.8 kPa |
| Features | Low initial pressure drop, high dust capacity, long service life, zero-leak seal |
Service Life and Storage
| 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 packaging, dry ambient conditions |
Compliance Standards
- ISO 5011 — Inlet air cleaning equipment for internal combustion engines and compressors (efficiency and dust capacity)
- ISO 16889 — Hydraulic fluid power filters — determination of beta ratio
- ISO 16890 / EN 779 — General ventilation air filters classification
- ISO 29463 — High-efficiency air filters (HEPA/ULPA)
- GB/T 14295 — Air filters
- GB/T 6165 — Test methods for air filter performance (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 main power, apply LOTO, confirm complete stop and depressurization.
- 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; check for any gasket left in the housing groove.
- Clean the housing interior: Wipe the inner walls and sealing surfaces free of dust, oil, and debris.
- Inspect the new element: Verify part number ATN18504; check media for damage, pleat deformation, and gasket aging.
- Install the new element: Insert vertically into the center of the housing, ensuring the gasket seats evenly without twisting or misalignment.
- Reassemble the housing: Replace 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 filter, and confirm the differential pressure gauge reads normal (initial drop 220–300 Pa).
Frequently Asked Questions
Q1: Which Ingersoll Rand compressors does the ATN18504 fit?
A: It is designed for ATN-series 185kW oil-free centrifugal compressors. If you are unsure, 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 demand much higher intake cleanliness. The ATN18504 uses micro-fiberglass media (99.5% @ 3.0μm), while standard screw filters are F5 grade (98% @ 5μm). Using a standard filter can lead to impeller fouling, dynamic imbalance, and costly impeller damage.
Q3: How do I know when to replace the filter?
A: Replace when: (1) differential pressure reaches the 650 Pa alarm; (2) 6,000–8,000 hours or 8–12 months of service is reached; or (3) visual inspection shows media damage or gasket aging/deformation.
Q4: Is the ATN18504 a genuine original part?
A: Yes, it 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 sufficient?
A: Centrifugal compressor intake filters may use single or multiple elements. The quantity depends on the intake filter assembly specification. Please provide the serial number for confirmation.
Related Part Numbers
| Part Number | Description | Notes |
|---|---|---|
| ATS11057 | Air Filter Element | ATS-series centrifugal compressor (110kW) |
| ATN09504 | Air Filter Element | ATN-series centrifugal compressor (95kW) |
| ATN10504 | Air Filter Element | ATN-series centrifugal compressor (105kW) |
| ATN72018 | Air Filter Element | ATN-series large centrifugal compressor (720kW) |
| A29504376 | Air Filter Element | Oil-free screw compressor pre-filter |
| A29504406 | Air Filter Element | Oil-free screw compressor main filter (H11) |
| A11516974 | Air Filter Element | Medium centrifugal compressor panel filter |
| A13368674 | Air Filter Element | Large centrifugal compressor panel filter |
Note: Technical parameters are based on 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 verify the original parts diagram and confirm current availability.
Procurement support: We supply genuine Ingersoll Rand spare parts for export markets. Contact us for datasheets, packing details, and MOQ/lead time. Volume pricing and consolidated shipments available for distributors and maintenance providers.