Ingersoll Rand ATN72018 Air Filter Element | 720kW Centrifugal Compressor Intake Filter | Genuine

Product Overview

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

As a core spare part for the centrifugal compressor intake filtration system, the ATN72018 is manufactured to Ingersoll Rand global technical standards. It offers high flow capacity, low resistance, high dust-holding capacity, and long service life, helping large centrifugal compressor stations reduce energy consumption and unplanned downtime.

Technical Specifications

Filtration Performance

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, final resistance)
Beta ratio β	β₃.₀ ≥ 1000

The micro-fiberglass media delivers 99.9% efficiency at 3.0 μm and above, significantly outperforming standard screw compressor air filters (F5, 98% @ 5μm). This meets the high intake cleanliness requirements of large centrifugal compressors and protects the precision impellers and diffusers of 720kW units.

Flow and Resistance

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, rated flow)
Operating differential pressure	350–600 Pa
Alarm / final resistance	Alarm: 700 Pa; Final: 800 Pa (must replace)
Pressure drop vs. energy	Each 100 Pa increase in inlet pressure loss raises compressor shaft power by approx. 0.35%

Designed with micro-fiberglass media, the Ingersoll Rand centrifugal compressor intake filter has a clean pressure drop about 40% lower than comparable competitors and dust holding capacity about 89% higher, effectively reducing energy consumption and extending replacement intervals under high-flow conditions.

Dimensions and Installation

Parameter	Value
Dimensions	Approx. φ600 × φ310 × 600 mm (OD × ID × H)
Effective filtration area	Approx. 25–30 m² (pleated media)
Pleats / pleat spacing	Approx. 300–350 pleats, spacing approx. 6–7 mm
Mounting interface	Flange or end-cap groove type, mates with large intake filter housing
Sealing	Polyurethane (PU) foam gasket integrated into end frame, seamless zero-leak fit

Materials of Construction

Parameter	Value
Media	Micro-fiberglass
Media weight	Approx. 120–150 g/m²
Support	Inner galvanized metal support mesh + outer protective mesh, prevents media collapse
End caps	Polystyrene frame, lightweight, corrosion-resistant, incinerable
Seal	Polyurethane (PU) one-piece foam gasket, high elasticity, seamless fit
Adhesive	Polyurethane adhesive bonds end caps to media, heat-resistant, no debonding

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	Overall collapse differential pressure ≥ 2.8 kPa
Features	High flow, low resistance, high dust holding, long replacement interval, zero-leak seal

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, dry, ambient temperature

Standards

• ISO 5011: Inlet air cleaning equipment for internal combustion engines and compressors — performance testing
• ISO 16889: Hydraulic fluid power filters — multi-pass method for evaluating filtration performance
• 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 of testing 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, etc.): every 3,000 hours
• Replace immediately when differential pressure alarm triggers (≥700 Pa)

Installation Steps

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

Frequently Asked Questions

Q1: Which Ingersoll Rand compressors does the ATN72018 fit?
A: The ATN72018 is designed 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 the ATN72018 and a standard screw compressor air filter?
A: Centrifugal compressors require much higher intake cleanliness and air flow than screw compressors. The ATN72018 uses micro-fiberglass high-efficiency media (99.9% @ 3.0μm) with a single-element flow of 50–80 Nm³/min, while standard screw compressor filters are only F5 grade (98% @ 5μm) with flows of a few to tens of Nm³/min. Using a standard filter can lead to impeller fouling, dynamic balance disruption, and even costly impeller damage in large centrifugal compressors.

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

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

Q5: Is one filter element enough for the ATN72018?
A: 720kW large centrifugal compressors typically use multiple filter elements in parallel. The exact number depends on the intake filter assembly specification. Please provide the serial number to confirm the configuration quantity.

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 grade)
A11516974	Air filter element	Medium centrifugal compressor filter (panel type)
A13368674	Air filter element	Large centrifugal compressor filter (panel type)

Note: The technical parameters above are based on 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.