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 oil-free centrifugal compressors. Built with micro-fiberglass media, it captures 99.9% of particles at 3.0 μm, preventing dust and particulate from entering the compression chamber and protecting high-speed impellers and diffusers from erosion. This supports stable delivery of ISO 8573-1 Class 0 oil-free air quality.

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 resistance, high dust-holding capacity and long service life to help large centrifugal compressor stations reduce energy consumption and unplanned downtime.

Technical Specifications

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 airflow and terminal resistance
• Beta ratio: β₃.₀ ≥ 1000

The micro-fiberglass media achieves 99.9% efficiency at 3.0 μm, significantly higher than standard screw compressor filters (F5, 98% @ 5 μm), meeting the stringent inlet air cleanliness requirements of high-power centrifugal compressors and protecting the precision impellers and diffusers of 720kW units.

Flow and Pressure Drop

• Rated airflow: approx. 50–80 Nm³/min per element (for 720kW-class centrifugal units)
• Initial pressure drop: approx. 250–350 Pa (clean, rated airflow)
• Operating differential range: 350–600 Pa
• Alarm / terminal resistance: alarm at 700 Pa; terminal at 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 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 (OD × ID × height)
• Effective filtration area: approx. 25–30 m² (pleated media)
• Pleats: approx. 300–350 pleats, pitch approx. 6–7 mm
• Mounting interface: flange or end-cap groove type, mating with large inlet filter housings
• Sealing: polyurethane (PU) foam gasket integrated into the end frame for zero-leak fit

Materials of Construction

• Media: micro-fiberglass
• Media weight: approx. 120–150 g/m²
• Support: galvanized inner support mesh and outer protective mesh to prevent media collapse
• End caps: polystyrene frame, lightweight, corrosion-resistant, incinerable
• Gasket: polyurethane (PU) integrally foamed, high-elasticity seamless seal
• Adhesive: polyurethane bonding 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
• Features: high flow, low resistance, high dust-holding capacity, long replacement interval, zero-leak seal

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 when kept sealed in a dry, ambient-temperature environment

Standards

• ISO 5011: inlet air filter performance testing for engines and compressors (efficiency and dust capacity)
• ISO 16889: determination of beta ratio for hydraulic filters
• ISO 16890 / EN 779: classification of general ventilation air filters
• ISO 29463: performance testing of high-efficiency air filters
• 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 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 differential pressure alarm triggers (≥700 Pa)

Installation Steps

1. Shut down and lock out: Switch off main power, apply lockout/tagout (LOTO), confirm the unit has fully stopped and depressurized.
2. Open the inlet filter housing: Release 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 straight up; 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 vertically into the center of the housing, ensuring the gasket seats evenly on the sealing surface without tilting or twisting.
7. Reassemble the housing: Refit the cover or access door and 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 inlet filter, and confirm the differential pressure gauge reads 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-power oil-free centrifugal compressors. If you are unsure about your model, provide the compressor serial number for accurate matching.

Q2: How is the ATN72018 different from a standard screw compressor air filter?

A: Centrifugal compressors require much higher inlet air cleanliness and airflow 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, while standard screw compressor filters are F5 (98% @ 5 μm) with flow of only a few to tens of Nm³/min. Using a standard filter can cause impeller fouling, dynamic imbalance and even costly impeller damage on large centrifugal compressors.

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

A: Replace when: 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 original Ingersoll Rand inlet filter housings.

Q5: Is one filter element enough?

A: 720kW large centrifugal compressors typically use multiple elements in parallel. The exact quantity depends on the inlet filter assembly specification; provide the serial number to confirm the configuration.

Related Parts

Part Number	Name	Description
ATS11057	Air filter element	ATS-series centrifugal compressor inlet filter (110kW class)
ATN09504	Air filter element	ATN-series centrifugal compressor inlet filter (95kW class)
ATN10504	Air filter element	ATN-series centrifugal compressor inlet filter (105kW class)
ATN18504	Air filter element	ATN-series centrifugal compressor inlet 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)

Note: The technical parameters above are based on Ingersoll Rand 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.

To request a quotation, datasheet or sample, contact our export team with your required quantity and destination port.