Ingersoll Rand ATN72018 Air Filter Element | 720kW Centrifugal Compressor

Product Overview

The ATN72018 air filter element is a genuine Ingersoll Rand inlet filter designed for ATN-series 720kW high-capacity oil-free centrifugal compressors. Its micro-fiberglass media captures 99.9% of particles at 3.0 μm, blocking dust and particulate matter from the compression chamber to protect high-speed impellers and diffusers, supporting stable ISO 8573-1 Class 0 oil-free air output.

As a core spare part of the Ingersoll Rand centrifugal compressor inlet filtration system, the ATN72018 is manufactured to Ingersoll Rand global technical standards, offering high flow, low resistance, high dust holding capacity and long service life to reduce energy consumption and unplanned downtime in large centrifugal compressor stations.

Key Specifications

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

Filtration Performance

• Filtration Rating: 3.0 μm
• 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

With micro-fiberglass media, the ATN72018 achieves 99.9% efficiency at 3.0 μm, well above standard screw compressor filters (F5, 98% @ 5 μm), meeting the strict inlet air cleanliness requirements of high-capacity centrifugal compressors and protecting the precision impellers and diffusers 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 at rated flow, clean condition
• 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%

The micro-fiberglass design delivers approximately 40% lower clean pressure drop and approximately 89% higher dust holding capacity than comparable alternatives, reducing energy consumption and extending replacement intervals under high-flow conditions.

Construction and Dimensions

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

Materials of Construction

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

Operating Conditions

• Operating Temperature: Continuous -20°C to 80°C; maximum 93°C (200°F)
• Relative Humidity: ≤95% RH, no condensation
• Collapse Pressure Resistance: ≥ 2.8 kPa overall
• 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 (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 temperature

Standards

• ISO 5011 — Inlet air cleaning equipment for internal combustion engines and compressors: performance testing (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: performance testing
• GB/T 14295 — Air filters
• GB/T 6165 — Test methods for air filter performance (efficiency and resistance)

Maintenance and Installation

Replacement Interval

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

Installation Steps

1. Shut down and lock out: Disconnect main power, apply lockout/tagout (LOTO), confirm the unit has fully stopped and is depressurized.
2. Open the inlet filter housing: Release the latches or bolts on the large inlet filter housing and remove the cover or access door.
3. Remove the old element: Pull the old ATN72018 element vertically upward; 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; ensure no dust, oil or foreign matter remains.
5. Inspect the new element: Verify part number ATN72018; check media for damage, pleat deformation and gasket aging.
6. Install the new element: Place it vertically in the center of the housing; ensure the gasket seats evenly on the sealing surface without skew or twisting.
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 confirm the differential pressure gauge returns to normal (initial drop should be 250–350 Pa).

FAQ

Q1: Which Ingersoll Rand compressors does the ATN72018 fit?
A: The ATN72018 is designed for Ingersoll Rand ATN-series 720kW high-capacity 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 require much 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 (98% @ 5 μm) with flow of a few to tens of Nm³/min. Using a standard filter can cause dust buildup on impellers, disrupt dynamic balance and even lead to costly impeller damage.

Q3: How do I know when to replace the air filter element?
A: Replace in three cases: 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 part manufactured to Ingersoll Rand global technical standards and fits the original Ingersoll Rand inlet filter housing.

Q5: Is one ATN72018 element enough?
A: Large 720kW centrifugal compressor inlet filters typically use multiple elements in parallel. The exact quantity depends on the inlet filter assembly specification; provide the compressor serial number to confirm the configuration.

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Note: The technical parameters above are compiled from Ingersoll Rand centrifugal compressor filtration system specifications and industrial filtration standards. For a 100% accurate match, please provide the complete compressor serial number so we can check the original parts diagram and confirm the latest supply information.