Introduction
The Ingersoll Rand 47550997001 54509427 Air/Oil Separator Element is a maintenance-focused combination for compatible M90–160 VSD compressor configurations. The 47550997001 reference identifies the 8,000-hour preventive maintenance package for the air-cooled configuration, while 54509427 is listed as the separator element required within that service package. The published maintenance listing specifies one 54509427 element.
Air/oil separation is a critical stage in an oil-injected rotary screw compressor. During compression, lubricant is introduced into the compression system for functions such as cooling, sealing, and lubrication. After compression, that oil must be efficiently separated from the compressed air before the air leaves the compressor.
The 54509427 separator is designed for this coalescing function. Fine oil aerosols are captured by the separator media and the separated oil is returned toward the compressor lubrication circuit, helping reduce oil carryover and maintain cleaner compressed air.
This function is especially important in industrial compressed-air systems where downstream equipment depends on controlled air quality. Excessive oil carryover can contaminate air-treatment equipment and pneumatic machinery, while a restricted separator can increase pressure drop and reduce overall system efficiency.
The direct association between 47550997001 and 54509427 makes the combination useful for scheduled maintenance planning. Rather than treating separator replacement as an isolated task, maintenance teams can incorporate it into the larger 8,000-hour service event alongside filtration, pressure-control, temperature-control, intake-valve, and lubrication maintenance. The published service listing identifies these additional components within the same M90–160 VSD maintenance configuration.
Separator selection should remain application-specific. Even when another element appears physically similar, differences in coalescing performance, sealing design, internal construction, pressure drop, and vessel compatibility can make substitution unsuitable.
Published replacement data for 54509427 gives representative dimensions of approximately 14.75 inches outside diameter and 16.87 inches height, with one supplier additionally listing an inside diameter of 8.38 inches. Because these figures are replacement-product specifications rather than universal OEM specifications, the actual compressor documentation should be used for final dimensional verification.
The separator's service condition should also be considered when diagnosing compressor performance. Increasing oil carryover, abnormal differential pressure, or deterioration in compressed-air quality can indicate that separator inspection or replacement is required, although other system conditions should be ruled out before identifying the separator as the root cause.
For purchasing teams, the 54509427 reference provides a precise identification point for sourcing the separator element, while 47550997001 provides the broader maintenance context. Recording both references with the compressor model and serial number improves service traceability.
When correctly matched to the compressor, 54509427 provides an important barrier against oil carryover and supports stable compressed-air quality, efficient compressor operation, and reliable scheduled maintenance.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Ingersoll Rand |
| Maintenance Kit Number | 47550997001 |
| Maintenance Kit Type | 8,000-Hour Preventive Maintenance Kit |
| Maintenance Kit Application | M90–160 VSD, air-cooled configuration |
| Component Number | 54509427 |
| Product Type | Air/Oil Separator Element |
| Separator Function | Coalescing separation of oil aerosols from compressed air |
| Quantity Listed in Package | 1 |
| Installation Location | Separator vessel / oil-separation system |
| Published Outside Diameter | Approx. 14.75 in / 375 mm |
| Published Height | Approx. 16.87 in / 428 mm |
| Published Inside Diameter | Approx. 8.38 in / 213 mm |
| Filter Type | Air/Oil Separator |
| Separation Method | Coalescing filtration |
| Oil Carryover Control | Yes |
| Operating Pressure | Application-specific; verify compressor documentation |
| Temperature Rating | Application-specific |
| Separator Efficiency | Application-specific |
| Weight | Application-specific; verify supplied product |
| Service Interval | Application-specific; associated with scheduled maintenance |
| Package Contents | Verify current bill of materials |
| Compatibility | Confirm compressor model, serial number, and separator-vessel configuration |
The published dimensions above are representative supplier/reference values; available replacement listings differ slightly in dimensional specifications, so they should not override the applicable Ingersoll Rand documentation.
Recommended Companion Models
| Model | Product Name |
| 24172215 | Air Filter Element |
| 39911631 | Coolant Filter Element |
| 99289894 | Minimum Pressure Valve Service Kit |
| 47545136001 | Temperature-Sensing Valve Kit |
These references are listed within the broader M90–160 VSD maintenance configuration associated with 47550997001 and address separate compressor service functions.
Frequently Selected Alternatives
| Model | Product Name |
| 54509435 | Separator Element |
| 54509500 | Air/Oil Separator |
| 54601513 | Air/Oil Separator Element |
| 54517776 | Air/Oil Separator |
