Ingersoll Rand ATN72018 Air Filter Element

ATN72018 is a genuine Ingersoll Rand air intake filter element engineered for ATN series 720kW oil-free centrifugal compressors. Built with micro-fiberglass media, it captures 99.9% of particles at 3.0 μm, shielding the compressor's high-speed impellers and diffusers from dust and wear while supporting stable ISO 8573-1 Class 0 oil-free air output.

As a core spare for the centrifugal compressor intake filtration system, ATN72018 is manufactured to Ingersoll Rand global technical standards. Its high flow capacity, low resistance, and high dust-holding capacity help large centrifugal compressor stations cut energy consumption and avoid unplanned downtime.

Key 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
Availability	Normally stocked

Technical Data

Filtration Performance

Parameter	Value
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 terminal resistance, rated flow)
Beta Ratio	β₃.₀ ≥ 1000

With micro-fiberglass media, ATN72018 achieves 99.9% efficiency at 3.0 μm, well above standard screw compressor air filters (F5, 98% @ 5 μm). This meets the high intake cleanliness demands of large centrifugal compressors and protects the precision impellers and diffusers of 720kW units.

Flow and Pressure Drop

Parameter	Value
Rated Air Flow	Approx. 50–80 Nm³/min (per element, for 720kW centrifugal units)
Initial Pressure Drop	Approx. 250–350 Pa (clean, at rated flow)
Operating Differential	350–600 Pa
Alarm / Terminal Resistance	Alarm: 700 Pa; Terminal: 800 Pa (replace immediately)
Energy Impact	Every 100 Pa increase in intake 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 use and extending change intervals in high-flow applications.

Dimensions and Installation

Parameter	Value
Dimensions	Approx. φ600 × φ310 × 600 mm (OD × ID × H)
Effective Filtration Area	Approx. 25–30 m² (pleated cartridge)
Pleats / Pitch	Approx. 300–350 pleats, pitch approx. 6–7 mm
Mounting Interface	Flange / end-cap groove, mates with large intake filter housing
Sealing	Polyurethane (PU) foam gasket integrated into media end frame, zero-leak fit

Construction Materials

Component	Material
Media	Micro-fiberglass
Media Weight	Approx. 120–150 g/m²
Support	Inner galvanized metal mesh + outer protective mesh
End Caps	Polystyrene frame, lightweight, corrosion-resistant, incinerable
Gasket	One-piece polyurethane (PU) foam gasket, high elasticity, seamless fit
Adhesive	Polyurethane bonding, heat-resistant

Operating Conditions

Parameter	Value
Operating Temperature	Continuous: -20°C to 80°C; Max: 93°C (200°F)
Relative Humidity	≤95% RH, non-condensing
Collapse Pressure	≥ 2.8 kPa
Features	High flow, low resistance, high dust holding, long service life, zero-leak seal

Service Life and Storage

Parameter	Value
Service Life	Approx. 4,000–6,000 hours (8–10 months) under standard conditions; 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
• ISO 16889 — Hydraulic fluid power filters, beta ratio determination
• ISO 16890 / EN 779 — General ventilation air filter classification
• ISO 29463 — High-efficiency air filters (HEPA/ULPA)
• 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, construction materials, cement, steel): 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 LOTO, confirm the unit has fully stopped and depressurized.
2. Open the intake filter housing: Release latches or bolts and remove the cover or access door.
3. Remove the old element: Pull the old ATN72018 straight up; check for any gasket residue in the housing groove.
4. Clean the housing: Wipe the interior and sealing surface with a clean cloth; ensure no dust, oil, or debris remains.
5. Inspect the new element: Verify part number ATN72018; check media for damage, pleats for deformation, and gasket for aging.
6. Install the new element: Place vertically into the center of the housing; ensure the gasket seats evenly without twisting.
7. Reassemble the housing: Refit 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 confirm pressure drop returns to normal (initial 250–350 Pa).

Frequently Asked Questions

Q1: Which Ingersoll Rand compressors use ATN72018?
A: ATN72018 is designed for Ingersoll Rand ATN series 720kW oil-free centrifugal compressors. If unsure, provide the compressor serial number and we will confirm exact fitment.

Q2: How does ATN72018 differ from a standard screw compressor air filter?
A: Centrifugal compressors require much higher intake cleanliness and flow. ATN72018 uses micro-fiberglass media (99.9% @ 3.0 μm) and handles 50–80 Nm³/min per element, while typical screw compressor filters are F5 (98% @ 5 μm) and handle only a few to tens of Nm³/min. Using a standard filter can lead to impeller fouling, balance loss, and costly impeller damage.

Q3: How do I know when to replace the air filter?
A: Replace when: 1) operating differential reaches the 700 Pa alarm; 2) 4,000–6,000 hours or 8–10 months have passed; or 3) visual inspection shows media damage or gasket aging/deformation.

Q4: Is ATN72018 a genuine OEM part?
A: Yes, ATN72018 is a genuine Ingersoll Rand part manufactured to global technical standards and designed to fit original intake filter housings.

Q5: How many elements are needed?
A: 720kW centrifugal compressor intake filters typically use multiple elements in parallel. The exact quantity depends on the intake filter assembly. Provide the serial number to confirm configuration.

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
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: Technical data above is based on Ingersoll Rand centrifugal compressor filtration system specifications and industrial filter standards. For 100% accurate fitment, please provide the compressor serial number so we can check the original parts diagram and confirm current availability.