Ingersoll Rand ATN72018 Air Filter Element — Product Details

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1. Product Overview

ATN72018 is a genuine Ingersoll Rand air filter element engineered for the intake filtration system of ATN-series 720kW oil-free centrifugal compressors. Built with micro-fiberglass media, it captures 99.9% of particles at 3.0 μm, blocking dust and particulate matter from entering the compression chamber to protect high-speed precision impellers and diffusers from erosion. This ensures stable delivery of ISO 8573-1 Class 0 oil-free air quality.

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

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2. Basic Specifications

Item	Specification
Part Number	ATN72018
Brand	Ingersoll Rand
Part Name	Air Filter Element
Product Line	CC (Centrifugal Compressor)
Compatible Models	ATN-series oil-free centrifugal compressors (720kW class)
Unit of Measure	EA (each)
Status	Normally supplied

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3. Technical Specifications

3.1 Filtration Performance (Core Metrics)

Parameter	Value
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 pressure drop)
Beta Ratio β	β₃.₀ ≥ 1000

ATN72018 uses micro-fiberglass media achieving 99.9% efficiency at 3.0 μm and above — significantly higher than standard screw compressor air filters (F5 class, 98% @ 5 μm). It meets the stringent intake air cleanliness requirements of high-power centrifugal compressors, protecting the precision impellers and diffusers of 720kW units.

3.2 Flow and Pressure Drop

Parameter	Value
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 Pressure Differential	350–600 Pa
Alarm / Final Pressure Drop	Alarm: 700 Pa; Final: 800 Pa (mandatory replacement)
Pressure Drop vs. Energy	Every 100 Pa increase in intake pressure loss raises compressor shaft power by approx. 0.35%

The micro-fiberglass media 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.

3.3 Dimensions and Mounting

Parameter	Value
Dimensions	Approx. φ600 × φ310 × 600 mm (OD × ID × 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 / end-cap groove type, mates with large intake filter housing
Sealing	Polyurethane (PU) foam gasket integrated into media end frame, seamless zero-leak fit

3.4 Material Construction

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

3.5 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 collapse pressure differential ≥ 2.8 kPa
Special Features	High flow, low pressure drop, high dust-holding capacity, extended replacement interval, zero-leak seal

3.6 Service Life and Maintenance

Parameter	Value
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, ambient dry storage

3.7 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 — multi-pass method for evaluating filtration performance (beta ratio)
• ISO 16890 / EN 779: Air filters for general ventilation — 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)

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4. Standard Maintenance and Installation Procedure

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, etc.): every 3,000 hours
• Replace immediately when pressure differential alarm triggers (≥700 Pa)

Installation Steps

1. Shut down and lock out: Disconnect main power to the compressor, apply lockout/tagout (LOTO), confirm the unit has fully stopped and pressure is released.
2. Open the intake filter housing: Release the latches or bolts on the large intake 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 housing inner walls and sealing surfaces with a clean cloth — ensure no dust, oil, or foreign matter remains.
5. Inspect the new element: Verify the part number ATN72018; check the media for damage, pleats for deformation, and gasket for aging.
6. Install the new element: Place the new element vertically into the center of the housing, ensuring the gasket seats evenly on the sealing surface without skewing 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 intake filter, and verify the pressure differential gauge returns to normal (initial pressure drop should be 250–350 Pa).

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5. Frequently Asked Questions

Q1: Which Ingersoll Rand compressors does ATN72018 fit?

A: 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: What is the difference between ATN72018 and a standard screw compressor air filter?

A: Centrifugal compressors demand far higher intake air cleanliness and flow capacity than screw compressors. ATN72018 uses micro-fiberglass high-efficiency media (99.9% @ 3.0 μm) with a single-element flow of 50–80 Nm³/min, while standard screw compressor filters are only F5 class (98% @ 5 μm) with flow of a few to tens of Nm³/min. Using a standard filter on a large centrifugal compressor can cause impeller fouling, imbalance, and even costly impeller scrapping.

Q3: How do I know when to replace the air filter element?

A: Three conditions require replacement: (1) operating pressure differential reaches the alarm value of 700 Pa; (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 ATN72018 a genuine OEM part?

A: ATN72018 is a genuine Ingersoll Rand part manufactured to Ingersoll Rand global technical standards and designed to fit original Ingersoll Rand intake filter housings.

Q5: Is one filter element enough?

A: The intake filter of a 720kW large centrifugal compressor typically uses multiple elements in parallel. The exact quantity depends on the intake filter assembly specification — provide the serial number to confirm the configured quantity.

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6. Related Parts

Part Number	Name	Description
ATS11057	Air Filter Element	ATS-series centrifugal compressor intake filter (110kW class)
ATN09504	Air Filter Element	ATN-series centrifugal compressor intake filter (95kW class)
ATN10504	Air Filter Element	ATN-series centrifugal compressor intake filter (105kW class)
ATN18504	Air Filter Element	ATN-series centrifugal compressor intake filter (185kW class)
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)

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Note: The 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 the latest supply information.