Introduction
The Ingersoll Rand 47550997001 99289894 Minimum Pressure Valve Service Kit is designed for scheduled maintenance of compatible M90–160 compressor pressure-control systems. The 47550997001 reference identifies an 8,000-hour preventive maintenance package for the New Cobra M90–160 air-cooled configuration, while 99289894 is listed as the associated minimum pressure valve service kit.
The minimum pressure valve plays an important role in an oil-injected rotary screw compressor. Although relatively compact compared with the compressor package itself, the valve contributes to maintaining the internal pressure conditions required for proper oil circulation and separation.
The 99289894 reference is specifically associated with the M90–160 minimum pressure valve application. Parts catalogue information identifies it as a service kit for minimum pressure valve 23521297, while other parts references separately identify different service kits for smaller compressor ranges.
This application-specific identification is important when planning maintenance. A minimum pressure valve service kit is not simply a collection of generic seals. Its components must correspond to the construction of the applicable valve assembly. Using the wrong kit can result in incorrect internal clearances, sealing problems, or an incomplete repair.
Within the 47550997001 maintenance program, 99289894 is combined with other major service components. The published package listing includes air filtration, coolant filtration, air/oil separation, temperature-control servicing, intake-valve servicing, water-cooler sealing, and motor lubrication.
Servicing the minimum pressure valve during a major maintenance event can therefore be a practical way to address pressure-control components before they develop into an unexpected operating issue. Potential symptoms of a pressure-control problem can include abnormal operating pressure, excessive oil carryover, unstable compressor loading, or other deviations from normal system behavior, although these symptoms can also have several other causes.
For maintenance engineers, diagnosis should begin with operating data and the compressor's service documentation. Pressure readings, valve condition, oil-separation performance, control signals, and related pneumatic components should be evaluated before deciding that the minimum pressure valve is the root cause.
The 99289894 reference also improves purchasing accuracy. Rather than sourcing an apparently similar minimum pressure valve kit based only on external appearance, maintenance teams can specify the exact service reference and verify it against the machine's model and serial number.
The kit should not be confused with complete minimum pressure valve assemblies or with service kits intended for other compressor sizes. For example, 99289886 and 99289878 are separately identified for M75 and M37/55 applications, respectively.
When correctly matched to the compressor, 99289894 provides a focused service solution for the minimum pressure valve and supports the reliability objectives of the 8,000-hour preventive maintenance program.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Ingersoll Rand |
| Maintenance Kit Number | 47550997001 |
| Maintenance Kit Type | 8,000-Hour Preventive Maintenance Package |
| Maintenance Kit Application | New Cobra M90–160, air-cooled configuration |
| Component Number | 99289894 |
| Product Type | Minimum Pressure Valve Service Kit |
| Valve Application | M90–160 |
| Associated Valve Reference | 23521297 |
| Quantity Listed in 47550997001 | 1 |
| Primary Function | Minimum pressure valve servicing |
| System Function | Compressor pressure and oil-system control |
| Installation Location | Minimum pressure valve assembly |
| Service Interval | Associated with 8,000-hour maintenance program |
| Valve Operating Pressure | Application-specific; verify compressor documentation |
| Valve Dimensions | Application-specific; verify applicable parts documentation |
| Kit Dimensions | Not verified; confirm current supplier/OEM documentation |
| Kit Weight | Not verified; confirm supplied kit |
| Service Components | Verify current bill of materials |
| Installation Procedure | Follow applicable Ingersoll Rand service documentation |
| Compatibility | Confirm compressor model, serial number, and valve reference |
| Package Contents | Verify applicable 47550997001 / 99289894 bill of materials |
The 99289894 application and its association with minimum pressure valve 23521297 are supported by published Ingersoll Rand parts-catalogue references, while the 47550997001 package relationship is documented in the M90–160 maintenance-parts listing.
Recommended Companion Models
| Model | Product Name |
| 24172215 | Air Filter Element |
| 39911631 | Coolant Filter Element |
| 54509427 | Air/Oil Separator Element |
| 39218193 | Motor Grease SHC 220 |
These components are listed within the broader 47550997001 maintenance configuration and address separate compressor systems. They should not be treated as substitutes for 99289894.
Frequently Selected Alternatives
| Model | Product Name |
| 99289886 | Minimum Pressure Valve Service Kit M75 |
| 99289878 | Minimum Pressure Valve Service Kit M37/55 |
| 47649899001 | Minimum Pressure Valve Service Kit |
| 24509200 | Service Kit, Minimum Pressure Valve |
