Product
Ingersoll Rand ATN18504 Air Filter Element | 185kW Centrifugal Compressor Intake
Genuine Ingersoll Rand ATN18504 air filter element for ATN series 185kW oil-free centrifugal compressors. Micro-fiberglass media with 99.5% efficiency at 3.0 μm, low initial pressure drop and high dust-holding capacity to protect precision impellers. Model-matched by serial number; OEM wholesale and export supply available.
- Export packaging & documentation support
- OEM / ODM customization available
- Sample and bulk order workflow
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 delivers filtration efficiency of 99.5% or higher 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 and 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, offering low initial pressure drop, high dust-holding capacity and extended service life to reduce energy consumption and unplanned downtime.
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 regular supply |
Filtration Performance
| Parameter | Value |
|---|---|
| Filtration Rating | 3.0 μm |
| 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 and above, significantly higher than standard screw compressor air filters (F5 class, 98% @ 5 μm). This meets the stringent intake cleanliness requirements 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 at rated flow, clean condition |
| Operating Differential Range | 300–550 Pa |
| Alarm / Final Resistance | Alarm: 650 Pa; final resistance: 800 Pa (must replace) |
| Pressure Drop vs. Power | Each 100 Pa increase in intake loss raises compressor shaft power by approx. 0.35% |
The micro-fiberglass design delivers approximately 40% lower clean pressure drop and approximately 89% higher dust-holding capacity than comparable alternatives, 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) |
| Pleats / Pleat Spacing | Approx. 200–240 pleats, approx. 6–8 mm spacing |
| Installation Interface | Flange / end-cap groove, mates with intake filter housing |
| Sealing | Polyurethane (PU) foam gasket integrated into end frame for seamless zero-leak fit |
Material Construction
| Parameter | Value |
|---|---|
| Media | Micro-fiberglass |
| Media Weight | Approx. 120–150 g/m² |
| Support Structure | Inner galvanized metal support mesh + outer protective mesh to prevent media collapse |
| End Caps | Polystyrene frame, lightweight, corrosion-resistant, incinerable |
| Seal | One-piece polyurethane (PU) 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 | Overall ≥ 2.8 kPa |
| Features | Low initial pressure drop, high dust-holding 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 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 — 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: 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 conditions (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: Disconnect main power, apply LOTO, confirm the unit has fully stopped and pressure is released.
- Open the intake filter housing: Release housing clips 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 foreign matter.
- 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 tilting or twisting.
- Reassemble the housing: Refit the cover, tighten bolts or clips 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 returns to normal (initial drop should be 220–300 Pa).
FAQ
Q1: Which Ingersoll Rand compressors does 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 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 typically F5 class (98% @ 5 μm). Using a standard filter can cause impeller fouling, imbalance 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 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 original part?
A: ATN18504 is a genuine Ingersoll Rand part manufactured to global technical standards and fits the original intake filter housing.
Q5: Is one filter element enough?
A: Centrifugal compressor intake filters may use single or multiple elements depending on the intake filter assembly specification. Provide the serial number to confirm the correct configuration.
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 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 supply.