Ingersoll Rand ATS11057 Air Filter Element | ATS Centrifugal Compressor OEM Part

Product Overview

The ATS11057 air filter element is a genuine Ingersoll Rand intake filter element engineered for ATS series oil-free centrifugal compressors. Its micro-fiberglass media delivers 99.97% filtration efficiency at 2.0 μm, blocking dust and particulate matter before it reaches the compression chamber. This protects the precision impeller and diffuser from erosion and helps maintain ISO 8573-1 Class 0 oil-free air quality.

As an original part within the Ingersoll Rand CC (Centrifugal Compressor) product line, P266 product group, the ATS11057 is built to Ingersoll Rand global technical standards. Three core advantages — low initial pressure drop, high dust holding capacity, and long service life — help operators cut running energy costs and reduce unplanned downtime.

Key Specifications

• Part number: ATS11057
• Brand: Ingersoll Rand
• Product line / group: CC (Centrifugal Compressor) / P266
• Application: ATS series oil-free centrifugal compressors, 110 kW class
• Filtration rating: 2.0 μm; efficiency 99.97% @ 2.0 μm
• Filter class: H11 (sub-HEPA, per EN 1822 / ISO 29463)
• Dust holding capacity: approx. 2.2 kg at rated flow and terminal resistance
• Beta ratio: β₂.₀ ≥ 3333
• Rated air flow: approx. 17–32 Nm³/min (110 kW class centrifugal units)
• Initial pressure drop: approx. 120–180 Pa (clean, rated flow)
• Operating differential range: 180–600 Pa; alarm at 750 Pa; terminal resistance 1000 Pa (replace)
• Dimensions: approx. φ350 × φ180 × 320 mm (OD × ID × height)
• Effective filtration area: approx. 8–10 m² pleated media
• Media: micro-fiberglass, approx. 120–150 g/m²
• Construction: galvanized inner support and outer protective mesh; polystyrene end caps; PU foam seal; PU adhesive bonding
• Operating temperature: -20°C to 80°C continuous; max 93°C (200°F)
• Relative humidity: ≤95% RH, no condensation
• Collapse pressure resistance: ≥3.0 kPa differential
• Service life: approx. 8000 hours standard duty (approx. 1 year); 4000–6000 hours in high-dust conditions
• Shelf life: 36 months in sealed packaging, dry ambient conditions
• Unit of measure: EA
• Availability: normally supplied; long-lead order item (approx. 110 days standard lead time)

Why Centrifugal Compressors Need H11 Filtration

Centrifugal compressors demand far cleaner intake air than screw compressors. The ATS11057 uses H11 micro-fiberglass media at 99.97% @ 2.0 μm, compared with typical screw compressor elements rated around F5 (98% @ 5 μm). Fitting a lower-grade element allows dust to accumulate on the impeller, disturbing dynamic balance and risking impeller wear or scrapping.

According to Ingersoll Rand published data, this intake filter series runs at a clean pressure drop about 40% lower than comparable competitors, with dust holding capacity about 89% higher. Every 100 Pa of additional intake pressure loss adds roughly 0.35% to compressor shaft power, so lower restriction translates directly into energy savings and longer replacement intervals.

Maintenance and Installation

Replacement intervals

• Standard duty: every 8000 hours or 12 months, whichever comes first
• High-dust duty (mining, building materials, foundry): every 4000–6000 hours
• Replace immediately when the differential pressure alarm triggers (≥750 Pa)

Installation steps

1. Shut down and isolate: switch off the main compressor power, apply lockout/tagout (LOTO), and confirm the unit has fully stopped.
2. Open the intake filter housing: release the housing latches or bolts and remove the cover.
3. Remove the old element: lift the old ATS11057 element straight up and check whether the seal ring remains in the housing groove.
4. Clean the housing: wipe the inner walls and sealing face with a clean cloth; ensure no dust, oil, or foreign matter remains.
5. Inspect the new element: verify part number ATS11057 and check the media for damage and the seal for deformation.
6. Install the new element: seat it vertically in the housing center so the seal contacts the sealing face evenly, without skewing.
7. Refit the housing: replace the cover and tighten bolts or latches evenly for a gap-free seal.
8. Start up and leak-check: run the compressor, listen for air leakage at the intake filter, and confirm the differential pressure gauge returns to normal (initial drop should read 120–180 Pa).

Frequently Asked Questions

Q1: Which Ingersoll Rand compressors does the ATS11057 fit?
The ATS11057 is designed for Ingersoll Rand ATS series oil-free centrifugal compressors in the 110 kW class. If you are unsure about your model, provide the compressor serial number and we will confirm the exact match.

Q2: How is it different from a standard screw compressor air filter?
Centrifugal compressors require much cleaner intake air. The ATS11057 uses H11 micro-fiberglass media (99.97% @ 2.0 μm), while standard screw compressor elements are typically F5 grade (98% @ 5 μm). Using the wrong element can lead to impeller fouling, loss of dynamic balance, and even impeller scrapping.

Q3: How do I know when to replace the element?
Three triggers: differential pressure reaches the 750 Pa alarm value; the 8000-hour or 12-month interval is reached; or visual inspection shows damaged media or a hardened, deformed seal.

Q4: Is the ATS11057 a genuine original part?
Yes. The ATS11057 is a genuine Ingersoll Rand original part, manufactured to Ingersoll Rand global technical standards and matched to the original intake filter housing.

Q5: What is the lead time?
The ATS11057 is a long-lead order item with a standard lead time of approximately 110 days. We recommend planning procurement in advance to avoid disrupting compressor operation.

Related Part Numbers

• ATN09504 — air filter element, ATN series centrifugal compressors (95 kW class)
• ATN10504 — air filter element, ATN series centrifugal compressors (105 kW class)
• ATN18504 — air filter element, ATN series centrifugal compressors (185 kW class)
• ATN72018 — air filter element, ATN series large centrifugal compressors (720 kW class)
• A29504376 — air filter element, oil-free screw compressor pre-filter
• A29504406 — air filter element, oil-free screw compressor main filter (H11 grade)
• A11516974 — air filter element, mid-size centrifugal compressor (panel type)
• A13368674 — air filter element, large centrifugal compressor (panel type)

Note: The technical parameters above are compiled from Ingersoll Rand centrifugal compressor filtration system specifications and industrial filtration standards. For a 100% accurate match, provide the complete compressor serial number and we will check the original parts drawing and confirm current supply information.