Ingersoll Rand ATN72018 Air Filter Element

The ATN72018 is a genuine Ingersoll Rand inlet air filter element engineered for ATN-series 720kW oil-free centrifugal compressors. Its micro-fiberglass media captures 99.9% of particles at 3.0 μm, protecting high-speed impellers and diffusers from dust ingress and maintaining stable ISO 8573-1 Class 0 oil-free air output.

As a core consumable in the centrifugal compressor inlet filtration system, the ATN72018 is manufactured to Ingersoll Rand global technical standards. It combines high flow capacity, low pressure drop, high dust-holding capacity and long service life — helping large centrifugal compressor stations reduce energy consumption and unplanned downtime.

Basic Specifications

• Part Number: ATN72018
• Brand: Ingersoll Rand
• Component: Air Filter Element
• Product Line: CC (Centrifugal Compressor)
• Compatible Models: ATN-series oil-free centrifugal compressors (720kW class)
• Unit of Measure: EA (each)
• Availability: Normally in supply

Technical Parameters

Filtration Performance

• Filtration Rating: 3.0 μm
• Filtration Efficiency: 99.9% @ 3.0 μm
• Filter Class: F8 (medium-high efficiency, per EN 779 / ISO 16890)
• Dust-Holding Capacity: Approx. 7.2 kg (at rated flow and final resistance)
• Beta Ratio: β₃.₀ ≥ 1000

The micro-fiberglass media delivers 99.9% efficiency at 3.0 μm — significantly higher than standard screw compressor air filters (F5, 98% @ 5 μm). This meets the stringent inlet air cleanliness requirements of large centrifugal compressors and protects the precision impeller and diffuser of 720kW units.

Flow and Pressure Drop

• Rated Air Flow: Approx. 50–80 Nm³/min (per element, for 720kW-class centrifugal units)
• Initial Pressure Drop: Approx. 250–350 Pa (clean, at rated flow)
• Operating Differential Range: 350–600 Pa
• Alarm / Final Resistance: Alarm at 700 Pa; final resistance 800 Pa (replace immediately)
• Pressure Drop vs. Energy: Every 100 Pa increase in inlet pressure loss raises compressor shaft power by approx. 0.35%

Designed with micro-fiberglass media, the Ingersoll Rand centrifugal inlet filter delivers approximately 40% lower clean pressure drop and 89% higher dust-holding capacity than comparable alternatives — reducing energy consumption and extending replacement intervals under high-flow conditions.

Dimensions and Installation

• Dimensions: Approx. φ600 × φ310 × 600 mm (outer diameter × inner diameter × height)
• Effective Filtration Area: Approx. 25–30 m² (pleated cartridge unfolded area)
• Pleats / Pleat Pitch: Approx. 300–350 pleats, pitch approx. 6–7 mm
• Mounting Interface: Flange or end-cap groove type, mates with large inlet filter housing
• Sealing: Polyurethane (PU) foam gasket integrated into the media end frame for seamless zero-leak fit

Material Construction

• Media: Micro-fiberglass
• Media Weight: Approx. 120–150 g/m²
• Inner / Outer Support: Galvanized metal support mesh (inner) and protective mesh (outer) to prevent media collapse
• End Caps: Polystyrene frame — lightweight, corrosion-resistant, incinerable
• Seal: Polyurethane (PU) integrally foamed gasket, high elasticity, seamless fit
• Adhesive: Polyurethane adhesive bonding end caps to media, heat-resistant, no debonding

Operating Conditions

• 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 overall
• Special Features: High flow, low resistance, high dust-holding capacity, long replacement interval, zero-leak sealing

Service Life and Maintenance

• Service Life: Approx. 4,000–6,000 hours (approx. 8–10 months) under standard conditions; reduced to 3,000 hours in high-dust environments
• Shelf Life: 36 months in original sealed packaging, dry ambient conditions

Standards

• ISO 5011 — Inlet air filter performance testing for internal combustion engines and compressors (efficiency and dust capacity)
• ISO 16889 — Hydraulic filter beta ratio determination
• ISO 16890 / EN 779 — General ventilation air filter classification
• ISO 29463 — High-efficiency air filter performance testing
• GB/T 14295 — Air filters
• GB/T 6165 — Air filter performance test methods (efficiency and resistance)

Replacement and Installation

Replacement Intervals

• Standard conditions: every 4,000–6,000 hours or 8–10 months (whichever comes first)
• High-dust conditions (mining, building materials, cement, steel, etc.): every 3,000 hours
• Replace immediately when pressure differential alarm triggers (≥700 Pa)

Installation Steps

1. Shut down and isolate power: Turn off the main compressor power, apply lockout/tagout (LOTO), confirm the unit has fully stopped and depressurized.
2. Open the inlet filter housing: Release the latches or bolts on the large inlet filter housing, remove the cover or access door.
3. Remove the old element: Pull the old ATN72018 element straight up and out. Check whether the gasket remains in the housing groove.
4. Clean the housing interior: Wipe the inner walls and sealing surfaces with a clean cloth — no dust, oil or debris.
5. Inspect the new element: Verify the part number ATN72018, check media for damage, pleat deformation or gasket aging.
6. Install the new element: Place the new element vertically into the housing center, ensuring the gasket seats evenly on the sealing surface without skew or twist.
7. Reassemble the housing: Refit the cover or access door, tighten bolts or latches evenly to ensure a gap-free seal.
8. Start up and leak-check: Run the compressor, listen for air leaks at the inlet filter and check that the differential pressure gauge returns to normal (initial pressure drop should be 250–350 Pa).

Frequently Asked Questions

Q1: Which Ingersoll Rand compressors does the ATN72018 fit?
A: The ATN72018 is designed specifically for Ingersoll Rand ATN-series 720kW high-power 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 ATN72018 different from a standard screw compressor air filter?
A: Centrifugal compressors demand far higher inlet air cleanliness and flow than screw compressors. The ATN72018 uses micro-fiberglass high-efficiency media (99.9% @ 3.0 μm) with a single-element flow of 50–80 Nm³/min, whereas standard screw compressor filters are only F5 grade (98% @ 5 μm) with flow of a few to tens of Nm³/min. Using a standard filter can cause impeller fouling, dynamic imbalance and even costly impeller wear and scrapping.

Q3: How do I know when to replace the air filter element?
A: Three conditions require replacement: ① operating differential pressure reaches the 700 Pa alarm value; ② the 4,000–6,000 hour or 8–10 month interval is reached; ③ visual inspection reveals media damage or gasket aging/deformation.

Q4: Is the ATN72018 a genuine original part?
A: The ATN72018 is a genuine Ingersoll Rand original accessory, manufactured to Ingersoll Rand global technical standards and designed to fit original Ingersoll Rand inlet filter housings.

Q5: Is one filter element enough?
A: 720kW large centrifugal compressors typically use multiple filter elements in parallel. The exact number depends on the inlet filter assembly specification — provide the serial number to confirm the configuration quantity.

Related Parts

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• ATN09504 — Air filter element for ATN-series centrifugal compressors (95kW class)
• ATN10504 — Air filter element for ATN-series centrifugal compressors (105kW class)
• ATN18504 — Air filter element for ATN-series centrifugal compressors (185kW class)
• A29504376 — Pre-filter element for oil-free screw compressors
• A29504406 — Main filter element for oil-free screw compressors (H11 grade)
• A11516974 — Filter element for medium centrifugal compressors (panel type)
• A13368674 — Filter element for large centrifugal compressors (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 so we can check the original parts diagram and confirm current supply information.