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 serial-number matching.
- 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. Built with micro-fiberglass media, it captures 99.5% of particles at 3.0 μm, blocking dust and particulate matter from entering the compression chamber and protecting the high-speed precision impellers and diffusers from erosion. This supports ISO 8573-1 Class 0 oil-free air quality.
As a core consumable in the centrifugal compressor intake filtration system, the ATN18504 is manufactured to Ingersoll Rand global technical standards. Its low initial pressure drop, high dust-holding capacity and extended service life help operators reduce energy consumption and maintenance downtime.
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 and final resistance) |
| Beta ratio β | β₃.₀ ≥ 200 |
The micro-fiberglass media achieves 99.5% efficiency at 3.0 μm, significantly higher than standard screw compressor air filters (F5, 98% @ 5 μm), meeting the stringent intake cleanliness requirements of 185kW centrifugal compressors and protecting precision impellers and diffusers.
Flow and Pressure Drop
| Parameter | Value |
|---|---|
| Rated air flow | Approx. 25–40 Nm³/min (for 185kW 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 (replace immediately) |
| Pressure drop vs. energy | Every 100 Pa increase in inlet loss raises compressor shaft power by approx. 0.35% |
The micro-fiberglass design delivers approximately 40% lower clean pressure drop and 89% higher dust-holding capacity than comparable alternatives, reducing energy consumption and extending replacement intervals.
Dimensions and Installation
| Parameter | Value |
|---|---|
| Dimensions | Approx. φ420 × φ220 × 380 mm (OD × ID × height) |
| Effective filtration area | Approx. 12–15 m² (pleated media) |
| Pleats / pleat spacing | Approx. 200–240 pleats, spacing approx. 6–8 mm |
| Mounting interface | Flange or end-cap groove, mates with intake filter housing |
| Sealing | Polyurethane (PU) foam gasket integrated into end frame, seamless zero-leak fit |
Material Construction
| Parameter | Value |
|---|---|
| Media | Micro-fiberglass |
| Media weight | Approx. 120–150 g/m² |
| Support | Galvanized inner metal mesh + outer protective mesh, prevents media collapse |
| End caps | Polystyrene frame, lightweight, corrosion-resistant, incinerable |
| Gasket | Polyurethane (PU) one-piece foam gasket, high elasticity, seamless fit |
| Adhesive | Polyurethane bonding for end caps and media, high-temperature resistant |
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 | ≥ 2.8 kPa differential |
| Features | Low initial pressure drop, high dust-holding capacity, long service life, 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 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 — determination of beta ratio
- 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: Methods for testing air filter performance (efficiency and resistance)
Installation and Maintenance
Replacement Intervals
- 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
- Immediately when differential pressure alarm triggers (≥650 Pa)
Installation Steps
- Shut down and lock out: Disconnect main power, apply lockout/tagout (LOTO), confirm the machine has fully stopped and pressure is released.
- Open the intake filter housing: Release 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 walls and sealing surface with a clean cloth; ensure no dust, oil or foreign matter remains.
- 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 skew or twist.
- Reassemble the housing: Refit the cover and tighten bolts or clamps 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 differential 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, 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 typically F5 (98% @ 5 μm). Using a standard filter can lead to impeller fouling, loss of dynamic balance and costly impeller damage.
Q3: How do I know when to replace the air filter element?
A: Replace when: 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 media damage or gasket aging/deformation.
Q4: Is the ATN18504 a genuine OEM part?
A: The ATN18504 is a genuine Ingersoll Rand part manufactured to Ingersoll Rand global technical standards, designed to fit 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 Parts
| Part Number | Name | Description |
|---|---|---|
| ATS11057 | Air filter element | ATS-series centrifugal compressor intake filter (110kW) |
| ATN09504 | Air filter element | ATN-series centrifugal compressor intake filter (95kW) |
| ATN10504 | Air filter element | ATN-series centrifugal compressor intake filter (105kW) |
| ATN72018 | Air filter element | ATN-series large centrifugal compressor intake filter (720kW) |
| A29504376 | Air filter element | Oil-free screw compressor pre-filter |
| 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 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 check the original parts diagram and confirm current availability.