Product
Ingersoll Rand centrifugal air compressor air filter element 47722477001 | MSG TURBO-AIR / Centac intake filter element
Ingersoll Rand centrifugal air compressor (MSG TURBO-AIR / MSG Centac series) dedicated intake air filter element, drawing number 47722477001, part-level model code P675 (unit group C675). Filtration accuracy 5–10 μm, filtration efficiency ≥98%, wood pulp fiber filter paper pleated structure, operating temperature -10~+80 ℃, recommended replacement interval 2000 hours or 3 months. Supports verification and procurement by drawing number.
- Export packaging & documentation support
- OEM / ODM customization available
- Sample and bulk order workflow
I. Product Overview
47722477001 — Air Filter Element for Ingersoll Rand centrifugal air compressors.
Installed in the unit's intake filter assembly, upstream of the centrifugal impeller inlet. After outside air is drawn in, dust, sand particles, and fibers are retained by the filter media before entering the impeller and interstage cooler. Because the downstream impeller is a high-speed rotating component, dust accumulation can cause dynamic balance deviation; therefore, the intake filtration condition directly affects the rotor's running smoothness and maintenance costs.
This part number belongs to the Ingersoll Rand Centrifugal product line (product line code CC), with a part-level model code of P675, corresponding to unit group identifier C675. Centrifugal units are designed to be 100% oil-free (ISO 8573-1 Class 0); there is no lubricating oil in the compression chamber to carry away impurities, so all particles deposit on the impeller and cooler surfaces. Therefore, intake filtration requirements are higher than those for oil-flooded screw compressors.
Core Specifications at a Glance
| Item | Value |
|---|---|
| Part Number | 47722477001 |
| Name | Air Filter Element |
| Brand | Ingersoll Rand |
| Applicable Models | Ingersoll Rand centrifugal air compressors (MSG TURBO-AIR / MSG Centac series) and their packaged systems |
| Part-Level Model Code | P675 |
| Unit Group Identifier | C675 |
| Product Line | Centrifugal (CC) |
| Filtration Rating | 5–10 μm |
| Filtration Efficiency | ≥98% (for particles ≥5 μm) |
| Recommended Replacement Interval | 2000 hours or 3 months |
II. Basic Parameters
| Parameter | Details |
|---|---|
| Part Number | 47722477001 |
| Brand | Ingersoll Rand |
| Product Name | Air Filter Element |
| Product Category | Intake Filtration (Air Filter) |
| Product Line | Centrifugal (CC) |
| Part-Level Model Code | P675 |
| Unit Group Identifier | C675 |
| Applicable Models | Ingersoll Rand centrifugal air compressors (MSG TURBO-AIR / MSG Centac series) |
| Installation Position | Inside the unit's intake filter assembly, upstream of the centrifugal impeller inlet |
| Unit Air Supply Grade | 100% oil-free, ISO 8573-1 Class 0 |
| Replacement Interval | 2000 hours or 3 months |
Fitment Confirmation Method
Centrifugal units typically have two filter stages on the same unit: intake filtration and downstream clean filtration, with different part numbers. Before ordering, please verify: ① the part number stamped on the old filter's end cap or frame matches the part number being purchased; ② the model and group identifier on the unit nameplate; ③ the installation position of the old part (intake stage / clean stage). Ordering based on unit model alone can easily result in the wrong purchase, especially for centrifugal units.
III. Product Technical Parameters
1. Filtration Performance Parameters (Core Indicators)
| Parameter | Value / Description |
|---|---|
| Filtration Rating | 5–10 μm |
| Filtration Efficiency | ≥98% (for particles ≥5 μm) |
| Filter Class | Characterized per ISO 5011 by efficiency, resistance and dust holding capacity; the ventilation and air-conditioning classification system (G4/F7, etc.) does not apply |
| Dust Holding Capacity | — |
2. Flow and Resistance Parameters
| Parameter | Value / Description |
|---|---|
| Rated Air Handling Capacity | Must exceed the unit's rated intake air volume; select and match based on the unit's exhaust volume and intake temperature, corrected for altitude |
| Initial Pressure Drop (Initial Resistance) | Approximately 0.3–0.5 kPa for a clean new element |
| Operating Pressure Differential Range | Gradually rises with dust accumulation; normal operating range is approximately 0.5–1.5 kPa |
| Alarm / Final Resistance | Typical replacement threshold is approximately 1.5–2.5 kPa; for centrifugal units, the reading on the unit's Intake Depression Gauge is the final criterion |
| Pressure Drop vs. Energy Consumption Relationship | For every 1 kPa increase in intake resistance, the compression ratio rises by approximately 1%, and unit energy consumption increases accordingly by approximately 1.0% |
Details of the pressure drop vs. energy consumption relationship (calculated theoretically based on compression ratio, at a discharge gauge pressure of 0.85 MPa)
| Intake Resistance | Compression Ratio | Energy Consumption Increase |
|---|---|---|
| 0 kPa (new element) | 9.39 | Baseline |
| 0.5 kPa | 9.44 | +0.5% |
| 1.0 kPa | 9.49 | +1.0% |
| 1.5 kPa | 9.53 | +1.5% |
| 2.0 kPa | 9.58 | +2.0% |
| 2.5 kPa | 9.63 | +2.5% |
From installation of a new filter element to reaching the replacement threshold, intake resistance gradually rises by more than 2 kPa, and unit energy consumption increases correspondingly by approximately 2%. Centrifugal units have high power and mostly run continuously; this energy consumption difference often exceeds the price of the filter element itself, so using it based on resistance rather than exceeding the calendar limit is not economical.
3. Structural Dimensions and Installation Parameters
| Parameter | Value / Description |
|---|---|
| Overall Dimensions | — (subject to actual measurement) |
| Effective Filtration Area | — (subject to actual measurement) |
| Number of Pleats / Pleat Spacing | — (subject to actual measurement) |
| Mounting Interface | Mates with the interface of the unit's intake filter assembly; compare against the old part |
| Sealing Type | End-face seal or radial seal; compare against the old part |
List of items to measure (it is recommended to measure the old part before purchasing a replacement to verify the supply)
| Measurement Item | Description |
|---|---|
| Outer Diameter | Diameter of the outer edge of the filter paper body |
| Inner Diameter | Diameter of the center channel |
| Overall Height | Overall height including end caps |
| Sealing Surface Position and Type | End-face / radial, and the cross-sectional shape of the seal |
| Mounting Interface | Type and dimensions of the clamp, bolt holes, or quick-mount structure |
Length, diameter and sealing type directly affect whether the element can be installed and whether bypass occurs; substituting the unit model for actual measurement is not recommended.
4. Material Composition
| Parameter | Value / Description |
|---|---|
| Filter Media | Wood pulp fiber filter paper (cellulose media), pleated structure |
| Filter Media Basis Weight | Approximately 130 g/m² |
| Inner and Outer Support Frames | Galvanized steel perforated frames, supporting the filter paper on both inner and outer sides |
| End Caps | Metal or polyurethane end caps, bonded to the filter paper |
| Seal | Polyurethane or nitrile rubber seal body, either integrated with the end cap or installed separately |
| Adhesive Layer | Polyurethane adhesive, used to secure and edge-seal the filter paper to the end caps and frames |
5. Operating Condition Tolerance Parameters
| Parameter | Value / Description |
|---|---|
| Operating Temperature | -10 ℃ ~ +80 ℃ |
| Relative Humidity | ≤90% RH (non-condensing conditions) |
| Burst Strength / Collapse Resistance | Standard design can withstand a pressure differential across the filter paper of no less than 5 kPa without deformation |
| Special Function | Used for intake-stage filtration of oil-free centrifugal units, working in conjunction with downstream clean filtration elements to ensure air supply cleanliness |
6. Service Life and Maintenance Parameters
| Parameter | Value / Description |
|---|---|
| Service Life | 2000 hours or 3 months (whichever comes first) |
| High-Dust Environment | Hours are correspondingly shortened (e.g., approximately 1500 hours), and the time limit is advanced accordingly |
| Shelf Life | Recommended for use within 24 months; store in a dry, ventilated, light-protected place, avoiding moisture and compression deformation |
| Replacement Criteria | Unit intake depression gauge reading exceeds the limit, or the filter paper shows damage, adhesive failure, or a flattened sealing surface |
7. Applicable Standards
| Standard | Description |
|---|---|
| ISO 5011 | Test method for intake filter efficiency and dust holding capacity; the basis for performance characterization of this type of air filter element |
| ISO 8573-1 | Compressed air quality classes; the complete unit of this type is Class 0 (100% oil-free) |
| Note | The ISO 2941 / 2942 / 2943 / 3723 / 3724 series commonly found in replacement part documentation are in fact hydraulic filter element standards, used to evaluate pressure resistance, burst resistance and filtration characteristics. They do not apply to air filter elements and should not be used as a basis for air filter performance when purchasing |
IV. Standard Maintenance and Installation Steps
Step 1: Confirm unit status and spare parts. Check the unit nameplate model and group identification, and confirm that the purchased filter element matches the old part number. Prepare the new filter element, a clean cloth and the necessary tools.
Step 2: Shut down, depressurize, and disconnect power. Shut down according to the shutdown procedure and wait for the unit to fully depressurize (centrifugal units have rotational inertia; wait for the controller to confirm zero speed). Cut off the main power supply and apply lockout/tagout. This is a mandatory step and must not be omitted.
Step 3: Verify the old part before starting work. Before opening the intake filter assembly, first read the part number stamped on the old filter element end cap and its installation position, confirm it matches the purchased part, and then continue disassembly. On centrifugal units, the intake stage and clean stage filter elements have different part numbers; this step is key to preventing errors.
Step 4: Remove the old filter element and assess it. Remove the old filter element vertically and observe the dust distribution and the condition of the filter paper. Criteria: if the filter paper shows damage, perforation, end cap debonding, or a flattened sealing surface, replace it immediately even if the replacement interval has not been reached; if the outer surface is covered with black oil sludge, this indicates an abnormal oil mist in the intake air, and the upstream environment must be checked (for oil-free units, this phenomenon should be investigated as a priority).
Step 5: Clean the interior of the assembly
Wipe the inner walls and bottom of the assembly clean with a lint-free cloth. Do not blow compressed air forcefully into the interior of the assembly (this will blow accumulated dust into the intake duct). Criteria: no loose dust on the inner walls, and the sealing surface is flat and free of debris.
Step 6: Install the new filter element
Install the new filter element in the same orientation and position as the old one, paying attention to the direction of the sealing surface and the clamping method. Criteria: the filter element does not wobble after seating, and the sealing surface is evenly compressed around its circumference.
Step 7: Reassemble and confirm the seal. Reinstall the cover plate or clamp and tighten evenly as required by the unit. Check whether the intake vacuum gauge pressure line is unobstructed; a blocked pressure line will give a "falsely clean" reading and is a common source of misjudgment.
Step 8: Reset, test run, and record. Reset the maintenance timer, start the unit and run it unloaded, and observe the intake vacuum gauge reading and operating sound. Criteria: the vacuum gauge stabilizes within the unit's allowable range, with no abnormal howling (howling often indicates seal bypass). Record the unit's operating hours at the time of this replacement as the starting point for the next cycle.
V. Frequently Asked Questions
Q1: Which models is 47722477001 used on?
It is used on Ingersoll Rand centrifugal air compressors (MSG TURBO-AIR and MSG Centac series and their packaged systems), with part-level model code P675 and unit group identification C675. Centrifugal units are of 100% oil-free design. For a specific unit, please verify against the unit nameplate and the old part number.
Q2: Can it be installed on an oil-flooded screw compressor?
Not recommended. This part is an intake filter element for the centrifugal product line, and its dimensions and connections are designed for the intake assembly of centrifugal units. Oil-flooded screw compressors use a different part number system, and mixing them cannot guarantee sealing and filtration performance.
Q3: What is the replacement interval?
The standard interval is 2000 hours or 3 months, whichever comes first. In high-dust environments (cement, quarrying, mining, metalworking), the hours should be shortened to about 1500 hours. Ultimately, the intake vacuum gauge reading of the unit is the deciding factor; replace when the reading exceeds the limit, regardless of operating hours.
Q4: Why do centrifugal compressors have higher intake filtration requirements than screw compressors?
Centrifugal compressors are of oil-free design; there is no lubricating oil in the compression chamber to carry away contaminants, so particles will deposit on the surfaces of the high-speed impeller and the interstage cooler. Dust accumulation on the impeller causes a shift in dynamic balance, and correcting it requires shutting down the unit for rotor balancing. Screw compressors have an oil film that can partially carry away contaminants, so their tolerance for intake filtration is relatively higher.
Q5: Why are dimensions not marked?
Centrifugal units are supplied as complete project packages, and the intake assembly dimensions differ among different groups and different packaging scopes within the same series; marking a single dimension would instead easily mislead purchasing. It is recommended to measure the old part's outer diameter, inner diameter, overall height and sealing type, or provide photos of the old part and the unit nameplate; we will then verify by reverse lookup against the part number before confirming.
Q6: What are the consequences of increased intake resistance?
First, energy consumption rises: for every 1 kPa increase in intake resistance, the compression ratio rises by about 1%, and the unit's energy consumption increases by about 1%. Second, the intake volume decreases, and the unit's discharge volume decreases accordingly. Continuing to use it after the replacement threshold is reached saves less on filter element cost than the extra electricity consumed.
Q7: Can alternative parts be used?
Yes, but three items must be verified: filtration accuracy, end cap sealing type, and dimensions. If the sealing type of an alternative part does not match the original structure, bypass will occur; for oil-free centrifugal compressors, bypass means particles enter the impeller directly, a higher risk than for oil-flooded units. When purchasing alternative parts, it is recommended to provide photos of the old part and this drawing number.
Q8: What should be done if abnormal howling occurs after installation?
Howling usually indicates seal bypass: the filter element is not pushed fully into place, the sealing surface is deformed, or the seal is missing. Stop the unit immediately and recheck: whether the filter element is properly seated, and whether the sealing surface is flattened or turned over. Also check whether the intake vacuum gauge pressure line is blocked to avoid misjudgment.
Q9: What are the requirements for storing spare parts?
Store in a dry, ventilated place away from light, and protect from moisture, rain, and pressure from heavy objects. Moisture reduces the strength of the filter paper, and deformation under pressure damages the sealing fit. It is recommended to use within 24 months.
Q10: What other filter elements in the same series are easily confused?
In the Ingersoll Rand centrifugal product line, the same unit is often equipped with both intake filtration and downstream clean filtration filter elements, with different part numbers and different installation positions. Before ordering, be sure to confirm whether it is the intake stage or the clean stage; the two stages differ in filtration accuracy, material, and sealing type.
VI. Machine Models Compatible with This Part
This part is applicable to Ingersoll Rand centrifugal air compressors, specifically as follows:
| Item | Content |
|---|---|
| Unit type | Centrifugal air compressor (Centrifugal) |
| Product line | Ingersoll Rand centrifugal product line (CC) |
| Series | MSG TURBO-AIR / MSG Centac |
| Part-level model code | P675 |
| Unit group identifier | C675 |
| Air supply grade | 100% oil-free, ISO 8573-1 Class 0 |
| Typical applications | Occasions requiring a continuous, clean, oil-free air supply (food and beverage, pharmaceutical, electronics, textiles, pneumatic conveying, etc.) |
Representative model lineage of the centrifugal series (family-level reference; individual fit must be verified by serial number)
| Series | Representative models |
|---|---|
| MSG TURBO-AIR | TA / NX series packaged units |
| MSG Centac standard pressure | C series (C400, C700, C800, C1000, C3000, etc.) |
| MSG Centac high pressure | C750, C1050, 2CII, 3C, 4C and other high-pressure units |
| Packaged systems | Refrigerated dryers, filters, air receiver tanks and other post-treatment accessories for the above units |
Why parts must be verified by part number rather than selected by unit model: centrifugal units are supplied as project-specific packages, and the same unit may have different intake assembly configurations, post-treatment scope, and connection dimensions in different projects; the same unit also has two filter element stages—the intake stage and the downstream clean filtration stage—with different part numbers. Therefore, part selection should be based first on the part number marked on the old part itself, second on the unit nameplate, and third on the installation position.
Three-step verification method
- Read the part number engraved on the end cap or frame of the old filter element and compare it with the purchased drawing number;
- Read the model and group identifier on the unit nameplate and compare them with the unit parts manual;
- Confirm the installation position of the old part (intake stage / clean stage); the two stages are not interchangeable.
If the three steps still cannot confirm, please provide a photo of the unit nameplate, a photo of the old part (including the engraved part number), and a description of the installation position; we will cross-reference by part number and then confirm.
Cross-series note: filter elements for centrifugal units and those for oil-injected screw compressors belong to different part number systems and cannot be used across series. The dimensions and connections of screw compressor air filters are designed for the unit's external intake assembly; direct substitution will cause seal failure.
VII. Related Components
In the intake and air path system of the Ingersoll Rand centrifugal product line, the components maintained in the same cycle or the same stage as this part are as follows:
| Component | Drawing number | Function | Inspection points |
|---|---|---|---|
| Sterilizing filter element | 47722478001 | Downstream sterile-grade filtration part that further removes microorganisms and particles from the compressed air, used in occasions with higher air supply cleanliness requirements | Belongs to a different filtration stage from the intake filter element; part numbers are not interchangeable; confirm the installation position when replacing |
| Air filter assembly (housing) | — | Housing assembly that holds and secures the intake filter element | Check clamps, sealing surfaces, and outlet end for deformation and corrosion |
| Intake vacuum gauge / differential pressure gauge | — | Displays intake resistance and is the ultimate criterion for the replacement cycle | Regularly check whether the pressure tap line is blocked; blockage will give a "false clean" reading |
| Seals | — | Ensure no bypass between the filter element and the assembly | Inspect together with the filter element; replace if flattened, hardened, or missing |
| Unit lubricating oil and oil filter | — | Used for the gearbox and bearing lubrication system of the centrifugal unit (not oil for the compression chamber) | Replace at the cycle specified in the unit parts manual; inspect together with the intake filter element |
Recommended replacement: it is advisable to inspect the intake filter element, downstream clean filter element, and seals at the same time, and decide whether to replace each according to its own criteria. The replacement cycles of the intake filter element and the downstream clean filter element are different (the downstream part is usually judged by cleanliness requirements rather than dust accumulation), so they do not need to be replaced at the same time.
When specific part numbers are needed: for the items marked "—" above, please refer to the unit's accompanying parts manual; centrifugal units are supplied as project-specific packages, and the accessory part numbers listed in the manual correspond to the serial numbers of the applied units, so they should not be used across projects.