Ingersoll Rand ATN72018 Air Filter Element | ATN Series Centrifugal Compressor

Product Overview

The ATN72018 air filter element is a genuine Ingersoll Rand intake filter designed for ATN series 720 kW large oil-free centrifugal air compressors. It uses micro-fiberglass filter media with a filtration efficiency of over 99.9% for 3.0 μm particles, effectively blocking dust and particulate matter from entering the compression chamber. This protects the high-speed precision impellers and diffusers from wear and helps maintain stable ISO 8573-1 Class 0 oil-free air quality.

As a core spare part of the Ingersoll Rand 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

• 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 resistance)
• Beta ratio β: β₃.₀ ≥ 1000

Flow and Pressure Drop

• Rated flow capacity: approx. 50–80 Nm³/min per element (for 720 kW class centrifugal units)
• Initial pressure drop: approx. 250–350 Pa (clean, at rated flow)
• Operating pressure differential: 350–600 Pa
• Alarm / final resistance: alarm at 700 Pa; final at 800 Pa (must replace)
• Pressure drop vs. energy: every 100 Pa increase in inlet pressure loss raises compressor shaft power by approx. 0.35%

Dimensions and Installation

• Dimensions: approx. φ600 × φ310 × 600 mm (outer diameter × inner diameter × height)
• Effective filtration area: approx. 25–30 m² (pleated cartridge unfolded area)
• Pleats: approx. 300–350 pleats, pleat spacing approx. 6–7 mm
• Connection: flange or end-cap slot type, mates with large intake filter housing
• Sealing: polyurethane (PU) foam gasket integrated into the media end frame for zero-leak fit

Materials

• 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
• Seal: one-piece polyurethane (PU) foam gasket, high elasticity, seamless fit
• Adhesive: polyurethane adhesive bonding end caps to media, high-temperature resistant

Operating Conditions

• Operating temperature: continuous -20°C to 80°C; max. 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; 3,000 hours under high-dust conditions
• Shelf life: 36 months in original sealed packaging, dry environment at room temperature

Standards

• ISO 5011 — Inlet air filter performance testing for internal combustion engines and compressors
• ISO 16889 — Hydraulic filter beta ratio determination
• ISO 16890 / EN 779 — General ventilation air filter classification
• ISO 29463 — High-efficiency air filter performance testing
• GB/T 14295 — Air filters
• GB/T 6165 — Air filter performance test methods (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 depressurized.
2. Open the intake filter housing: Release latches or bolts on the large intake filter housing and remove the cover or access door.
3. Remove old element: Pull out the old ATN72018 element vertically. Check whether the seal ring 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 remains.
5. Inspect new element: Verify part number ATN72018. Check media for damage, pleats for deformation, and seal for aging.
6. Install new element: Place the new element vertically into the housing center. Ensure the seal ring fits evenly against the sealing surface without skew or twist.
7. Reassemble housing: Reinstall 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. Check that the differential pressure gauge reads normal (initial pressure 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 720 kW large oil-free centrifugal compressors. If unsure, provide your 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 intake 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, while standard screw compressor filters are typically F5 class (98% @ 5 μm) with much lower flow. Using a standard filter can cause dust buildup on centrifugal compressor impellers, imbalance, and costly impeller damage.

Q3: How do I know when to replace the air filter?
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 seal aging/deformation.

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

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

Related Parts

• ATS11057 — Air filter element for ATS series centrifugal compressors (110 kW class)
• ATN09504 — Air filter element for ATN series centrifugal compressors (95 kW class)
• ATN10504 — Air filter element for ATN series centrifugal compressors (105 kW class)
• ATN18504 — Air filter element for ATN series centrifugal compressors (185 kW class)
• A29504376 — Pre-filter element for oil-free screw compressors
• A29504406 — Main filter element for oil-free screw compressors (H11 class)
• A11516974 — Filter element for medium centrifugal compressors (panel type)
• A13368674 — Filter element for large centrifugal compressors (panel type)

Note: Technical parameters 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.