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- Ingersoll Rand
- 47572170001 99289894
- Minimum Pressure Check Valve Repair Kit
- USA
- 84 × 84 × 202 mm
- 1.41 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Ingersoll Rand 47572170001 99289894 Minimum Pressure Check Valve Repair Kit is a service kit for the minimum pressure check valve (MPCV) used in compatible Ingersoll Rand rotary screw air compressors. The valve helps maintain the required pressure in the compressor’s air and lubricant separation system and supports the transition from startup to normal operating conditions.
The minimum pressure check valve has two important functions in an oil-flooded screw compressor. It helps maintain sufficient internal pressure for the air-oil separation process and acts as a check valve to limit reverse flow from the downstream compressed-air system. When the valve’s sealing or moving components become worn, the compressor may experience abnormal pressure behavior, leakage or difficulties maintaining its intended operating conditions.
The 99289894 kit is identified in parts listings as a minimum pressure check valve repair kit. It is intended for servicing the valve assembly rather than replacing the entire compressor. Before maintenance, verify the part reference against the installed valve and compressor model, since repair-kit contents and fitment can vary between compressor configurations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Ingersoll Rand |
| Part Number | 47572170001 |
| Reference Number | 99289894 |
| Product Type | Minimum Pressure Check Valve Repair Kit |
| Abbreviation | MPCV Repair Kit |
| Equipment Type | Rotary Screw Air Compressor |
| Valve Function | Minimum pressure regulation and reverse-flow prevention |
| Service Purpose | Repair and maintenance of the minimum pressure check valve |
| Component Category | Compressor Valve Repair Kit |
| Dimensions | 84 × 84 × 202 mm |
| Weight | 1.41 kg |
Product Features
- Minimum pressure valve servicing: Intended for maintenance of the compressor’s minimum pressure check valve assembly.
- Check-valve function support: Helps restore the valve’s ability to limit reverse flow when the repaired assembly is correctly fitted.
- Pressure regulation support: Supports the valve’s role in maintaining the required internal compressor pressure.
- Repair-kit format: Groups service parts under a defined reference for maintenance planning.
- Compressor system maintenance: Supports servicing of the air-oil separation and discharge-pressure control arrangement.
- Part-number identification: Uses reference 99289894 for spare-parts identification and ordering.
- Valve assembly refurbishment: Allows service of the applicable valve rather than automatically replacing the complete assembly.
- Application-specific fitment: Requires confirmation of the compressor model and valve design before installation.
Working Principle
During startup, an oil-flooded rotary screw compressor needs to establish sufficient internal pressure for its air-oil separation system to operate as intended. The minimum pressure check valve restricts discharge flow until the required pressure conditions are reached. Once the valve opens, compressed air can flow toward the downstream system while the valve continues to serve its pressure-control and check-valve functions.
When the compressor stops or downstream pressure exceeds the pressure on the compressor side, the check-valve function helps prevent reverse flow into the compressor. The valve’s sealing surfaces and internal moving components must remain in suitable condition for this function to work correctly.
The 99289894 repair kit is used during maintenance of the applicable valve assembly. Worn seals or other service components can contribute to leakage, unstable pressure behavior or failure to maintain the intended valve function. The repair procedure should follow the applicable compressor service instructions, including correct assembly, inspection and any required operational checks.
After servicing, technicians should verify that the valve operates correctly during startup and under normal load. They should also check for external leakage and confirm that the compressor reaches its expected operating conditions before returning it to normal service.
Role in an Ingersoll Rand Compressor Pressure Control Architecture
The minimum pressure check valve sits in the compressor’s internal air and lubricant separation flow path, upstream of the downstream compressed-air system. The repair kit supports maintenance of this valve so that internal pressure regulation and reverse-flow prevention can function as intended.
| System Component | Function | Relationship to the Repair Kit |
|---|---|---|
| Minimum Pressure Check Valve | Maintains minimum internal pressure and limits reverse flow | The valve assembly serviced by the kit |
| Air-Oil Separator Element | Separates lubricant from compressed air | Relies on appropriate operating pressure for separation performance |
| Separator Vessel | Contains the air-oil mixture and supports separation | Houses the separation process associated with the valve’s pressure-control role |
| Compressor Airend | Compresses incoming air | Supplies the compressed air entering the separation system |
| Oil Circuit | Circulates lubricant for sealing, cooling and lubrication | Operates alongside the air-oil separation system |
| Discharge Line | Carries compressed air toward the plant system | Receives air after the pressure-control valve opens |
| Downstream Air Receiver | Stores compressed air where installed | Can create reverse-pressure conditions when the compressor stops |
| Pressure Gauge or Sensor | Indicates system pressure | Helps technicians assess operating pressure during service checks |
| Compressor Controller | Monitors operating conditions and controls the machine | May report pressure-related conditions depending on the compressor configuration |
| Valve Seals and Internal Service Parts | Maintain sealing and correct valve movement | Service components may be replaced as part of the repair procedure |
Industrial Applications
| Application | Maintenance Requirement | Role of the 99289894 Repair Kit |
|---|---|---|
| Manufacturing Plant Compressors | Maintain stable compressor pressure during production | Supports servicing of the minimum pressure check valve |
| Automotive Production Lines | Keep compressed-air systems available for pneumatic equipment | Supports valve maintenance during planned compressor servicing |
| Packaging Facilities | Maintain consistent compressor operation for production equipment | Helps restore the valve’s intended function after repair |
| Industrial Assembly Plants | Reduce unplanned downtime from compressor faults | Provides a defined repair-kit reference for maintenance planning |
| Metalworking Workshops | Maintain the pressure-control components of screw compressors | Supports service of the applicable minimum pressure valve |
| Textile and Paper Plants | Maintain compressor availability in continuous operations | Supports scheduled valve maintenance |
| Process Industry Utilities | Maintain the compressed-air supply for pneumatic systems | Helps maintain the compressor’s internal pressure-control arrangement |
| Compressor Service Workshops | Repair an applicable valve assembly during overhaul | Provides a kit reference for parts identification and work planning |
Installation and Maintenance
- Verify the kit reference: Confirm that 99289894 matches the compressor’s required minimum pressure check valve repair kit.
- Identify the valve configuration: Check the compressor model and installed valve assembly before dismantling any components.
- Shut down and isolate the compressor: Follow the approved lockout and isolation procedure before beginning maintenance.
- Release trapped pressure: Ensure that pressure has been safely relieved from the relevant compressor and separator sections before opening the valve assembly.
- Inspect the valve externally: Check the housing, connections and surrounding pipework for leakage, corrosion or mechanical damage.
- Document the original assembly: Record the orientation and arrangement of the valve components before disassembly.
- Inspect internal service parts: Check applicable seals, seating surfaces, springs and moving components for wear or damage.
- Clean the valve components: Remove contamination using methods compatible with the valve materials and compressor service requirements.
- Install the repair-kit parts: Fit the specified replacement components in the correct positions and orientation according to the service procedure.
- Reassemble the valve: Follow the applicable tightening sequence and torque requirements, and ensure that moving components operate freely.
- Test the compressor after service: Restore the system safely and check startup pressure behavior, discharge operation and signs of leakage.
- Record the maintenance work: Document the kit reference, parts replaced, inspection results and operating checks completed after the repair.
Related Components
| Component | Function | Relationship to the Repair Kit |
|---|---|---|
| Minimum Pressure Check Valve Assembly | Regulates minimum internal pressure and prevents reverse flow | The main assembly serviced by the kit |
| Air-Oil Separator Element | Removes lubricant from compressed air | Operates within the same separation system |
| Separator Vessel | Supports air-oil separation and internal pressure | Contains the process area associated with the valve |
| Valve Seals and O-Rings | Maintain sealing between valve components | Inspect and replace according to the applicable kit contents |
| Valve Spring and Moving Parts | Support the valve’s opening and closing behavior | Inspect during valve servicing where applicable |
| Compressor Discharge Piping | Carries compressed air downstream | Should be checked for leakage or obstruction during troubleshooting |
| Pressure Monitoring Components | Indicate compressor pressure conditions | Help verify operation following maintenance |
| Compressor Lubricant Circuit | Supplies oil for cooling, sealing and lubrication | Works alongside the air-oil separation process |
Recommended Related Models
| Model | Product Type | Relationship | Selection Consideration |
|---|---|---|---|
| Ingersoll Rand 99289894 | Minimum Pressure Check Valve Repair Kit | Main repair-kit reference | Confirm fitment against the installed compressor and valve |
| Ingersoll Rand 47572170001 | Supplied part reference | Additional identification supplied for this listing | Verify how this reference maps to the required assembly in the equipment parts list |
| Ingersoll Rand 23487457 | Air Filter | Related compressor maintenance part | Serves the intake filtration circuit, not the minimum pressure valve |
| Ingersoll Rand 23424922 | Coolant Filter | Related compressor maintenance part | Serves a different filtration function |
| Ingersoll Rand 23523772 | Filter Pad | Related filtration spare part | Confirm its equipment location before selection |
| Ingersoll Rand 23392368 | Minimum Pressure Valve Service Kit | Related service-kit category for certain R-Series and RM-Series compressors | Not a direct substitute; verify compressor model and valve configuration |
Key Advantages
- Supports maintenance of the minimum pressure check valve in compatible screw compressors.
- Helps restore the valve’s pressure-control and reverse-flow prevention functions.
- Provides a defined part reference for service planning and inventory management.
- Supports inspection and refurbishment of the applicable valve assembly.
- Helps maintenance teams address valve-related operating issues without assuming that the complete valve must be replaced.
Technical FAQs
What operating symptoms may indicate a problem with the minimum pressure check valve?
Possible symptoms include abnormal pressure buildup during startup, pressure instability, air leakage or reverse flow after shutdown. These symptoms can also have other causes, so the valve should be inspected alongside the compressor’s pressure-control and separation components.
Why is the minimum pressure check valve important to an oil-flooded screw compressor?
It helps maintain the internal pressure required for the air-oil separation process and limits reverse flow from the downstream compressed-air system. Correct valve operation supports the compressor’s intended startup and discharge behavior.
Does the 99289894 kit replace the complete minimum pressure check valve?
It is identified as a repair kit for the valve assembly, not automatically as a complete valve replacement. The exact included components should be confirmed against the kit specification and the valve being serviced.
Can the 99289894 kit be used on any Ingersoll Rand rotary screw compressor?
No. Valve assemblies and service-kit requirements vary by compressor model and configuration. Verify the part number against the equipment parts list before installation, and do not assume that another minimum pressure valve kit is interchangeable.