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- Ingersoll Rand
- 47704433001 47690462001
- Minimum Pressure Valve Kit
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- 150 × 150 × 300 mm
- 2.0 kg
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Product Overview
The Ingersoll Rand 47704433001 / 47690462001 Minimum Pressure Valve Kit is a replacement and service kit designed for maintenance of the minimum pressure check valve system used in Ingersoll Rand compressed air equipment.
The 47690462001 part number is associated with an MPCV Rebuild Kit, with MPCV referring to the Minimum Pressure Check Valve. The kit is intended to restore the operating condition of the valve assembly by replacing service components that may become worn, damaged, contaminated, or degraded during long-term compressor operation.
A minimum pressure valve is an important component in an oil-injected rotary screw compressor. It helps maintain the required internal pressure within the separator system and supports proper oil separation and circulation. It also helps prevent undesirable reverse flow from the compressed-air system back toward the compressor when operating conditions change.
The kit is therefore not a PLC, electrical module, or standalone automation controller. It is a mechanical compressor service component used as part of the compressed-air system.
For maintenance engineers, the 47704433001 / 47690462001 kit provides a practical way to service the existing minimum pressure valve assembly without necessarily replacing the complete valve.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Ingersoll Rand |
| Product Type | Minimum Pressure Valve Kit |
| Related Part Number | 47704433001 |
| Rebuild / Service Part Number | 47690462001 |
| Component Type | Minimum Pressure Check Valve Service Kit |
| Common Description | MPCV Rebuild Kit |
| Application | Rotary screw air compressors |
| Valve Function | Minimum pressure and check function |
| Typical Compressor Series | RS45-75I/N applications associated with 47690462001 |
| Kit Purpose | Valve rebuilding and maintenance |
| Dimensions | 150 × 150 × 300 mm |
| Weight | Approx. 2.0 kg |
| Installation | Compressor valve assembly |
| Application Environment | Industrial compressed-air systems |
| Maintenance Type | Preventive maintenance / component replacement |
The 150 × 150 × 300 mm dimensions and 2.0 kg weight provided for this product should be treated as the supplied product dimensions and weight for purchasing and handling purposes. Individual internal replacement components may naturally have much smaller dimensions and different weights.
Function and Working Principle
The minimum pressure valve is located within the compressed-air circuit of an oil-injected screw compressor and performs several important functions.
Its main purpose is to maintain a minimum pressure in the compressor’s separator and oil circulation system while also allowing compressed air to move toward the downstream air network when the required operating conditions are reached.
The basic operating sequence can be simplified as:
Compressor → Air/Oil Separator → Minimum Pressure Valve → Air Receiver / Plant Air System
During compressor operation, the minimum pressure valve remains closed or partially restricted until sufficient internal pressure is established.
Once the pressure reaches the required operating condition, the valve opens to allow compressed air to flow into the downstream system.
The valve also performs a check function. When downstream pressure becomes higher than the appropriate compressor-side pressure, the valve helps prevent unwanted reverse flow.
This makes the valve important for:
- Maintaining separator pressure
- Supporting oil circulation
- Controlling compressor discharge flow
- Preventing reverse air flow
- Supporting stable compressor operation
- Protecting the internal compressor system
Over time, valve components can become worn or contaminated. The MPCV rebuild kit is used to replace appropriate service components and restore the valve assembly.
Role in Industrial Compressed-Air Systems
The 47704433001 / 47690462001 kit is directly related to compressor maintenance rather than automation signal processing.
A typical compressed-air system may include:
Air Compressor → Separator → Minimum Pressure Valve → Aftercooler → Air Receiver → Plant Air Network
The minimum pressure valve is positioned at a critical point between the compressor’s internal air/oil separation system and the downstream compressed-air system.
If the valve does not operate correctly, several compressor operating problems may occur.
For example, a valve that does not maintain sufficient internal pressure can affect oil separation and circulation. A valve that does not open correctly can restrict discharge airflow and potentially increase compressor operating pressure.
A valve that does not provide proper check action may also allow undesirable reverse flow when the compressor is stopped or when downstream system pressure changes.
For these reasons, proper MPCV maintenance is an important part of rotary screw compressor service.
What Is an MPCV Rebuild Kit?
MPCV commonly refers to Minimum Pressure Check Valve.
A rebuild kit is different from purchasing an entirely new valve assembly. Instead, it provides replacement service components needed to restore the existing valve.
Depending on the specific compressor configuration and kit contents, service components may include items such as:
- Springs
- Washers
- Sealing elements
- Rings
- Valve-related metal components
- Other internal service parts
The exact contents should always be confirmed against the compressor model, serial number, and applicable parts documentation before installation.
The 47690462001 part number is specifically identified as an MPCV rebuild kit and has been associated with Ingersoll Rand RS45-75I/N compressor applications.
Industrial Applications
The Ingersoll Rand 47704433001 / 47690462001 kit is primarily used in industrial compressed-air equipment.
Rotary Screw Compressors
The main application is maintenance of the minimum pressure check valve in compatible rotary screw compressors.
Manufacturing Plants
Factories rely heavily on compressed air for pneumatic cylinders, tools, actuators, packaging equipment, and production machinery.
Maintaining compressor valve performance helps support stable plant air availability.
Food and Beverage Production
Compressed air may be used for packaging, conveying, instrumentation, and pneumatic equipment. Compressor maintenance is essential for reliable operation.
Chemical and Process Industries
Process plants often operate compressors continuously or for extended periods, making preventive valve maintenance important.
Automotive Manufacturing
Compressed air is widely used for pneumatic tools, automation equipment, assembly systems, and material handling.
General Industrial Utilities
The component can be used as part of maintenance programs for compatible Ingersoll Rand compressed-air systems.
Installation and System Integration
The minimum pressure valve kit should be installed by qualified compressor service personnel familiar with the applicable Ingersoll Rand compressor.
A typical maintenance procedure includes:
- Shut down the compressor.
- Isolate the compressor from the compressed-air network.
- Completely release stored pressure.
- Allow the equipment to cool to a safe temperature.
- Remove the relevant valve components.
- Inspect the valve body and mating surfaces.
- Replace worn components using the appropriate rebuild kit.
- Reassemble the valve according to the compressor service procedure.
- Reconnect the compressor system.
- Perform a controlled startup and check operating pressure and leakage.
Because the minimum pressure valve is part of a pressurized compressed-air system, service work should never be performed while the system remains pressurized.
After rebuilding, technicians should verify:
- Proper valve operation
- Correct discharge pressure
- Absence of external air leakage
- Stable separator pressure
- Normal compressor loading and unloading
- Correct oil circulation
- Normal operating temperature
Compatible System Components
The minimum pressure valve kit works together with several major compressor components.
| Component | Function |
|---|---|
| Air/Oil Separator | Separates oil from compressed air |
| Minimum Pressure Valve | Maintains minimum pressure and provides check function |
| Compressor Airend | Compresses the intake air |
| Oil Circuit | Provides lubrication and cooling |
| Oil Filter | Removes contaminants from compressor oil |
| Air Filter | Filters incoming air |
| Aftercooler | Reduces compressed-air temperature |
| Check Valve | Helps control air flow direction |
| Pressure Sensor | Monitors system pressure |
| Control System | Controls compressor operating conditions |
| Air Receiver | Stores compressed air |
| Blowdown System | Releases compressor-side pressure during unloading |
The minimum pressure valve should be considered part of the compressor’s overall air and oil management system rather than an isolated component.
Recommended Alternative Models
Because compressor valves and service kits are often application-specific, an alternative should be selected according to compressor model, valve design, pressure rating, and service configuration.
| Model | Type | Key Feature | Application |
|---|---|---|---|
| 47690462001 | MPCV Rebuild Kit | Minimum pressure check valve rebuild | Compatible Ingersoll Rand compressor maintenance |
| 47704433001 | Minimum Pressure Valve Kit | Service/replacement kit designation | Minimum pressure valve maintenance |
| 37951761 | Minimum Pressure Valve Repair Kit | Valve repair components | Compatible compressor service applications |
| 18983262 | Minimum Pressure Valve Service Kit | Service-oriented valve kit | Compressor maintenance |
| 47661854001 | Minimum Pressure Valve Service Kit | Minimum pressure valve servicing | Compatible Ingersoll Rand equipment |
| 47709371001 | Minimum Pressure Valve Kit | Compressor-specific kit | Selected compressor models |
The part number should always be matched against the compressor’s exact model and serial number before ordering. A physically similar minimum pressure valve kit is not necessarily a direct replacement.
Key Advantages
- Designed for Ingersoll Rand compressor maintenance
- Used for minimum pressure check valve rebuilding
- Helps restore valve operating performance
- Supports proper separator pressure
- Helps maintain oil circulation
- Supports correct compressed-air flow
- Helps prevent undesirable reverse flow
- Suitable for preventive maintenance programs
- Reduces the need to replace an entire valve assembly when rebuilding is appropriate
- Useful for extending the service life of compatible compressor components
Technical FAQs
What is Ingersoll Rand 47704433001?
It is a Minimum Pressure Valve Kit associated with maintenance and service of compatible Ingersoll Rand compressor minimum pressure valve assemblies.
What is 47690462001?
The 47690462001 is identified as an MPCV Rebuild Kit, where MPCV refers to Minimum Pressure Check Valve.
What does MPCV mean?
MPCV stands for Minimum Pressure Check Valve.
What does the minimum pressure valve do?
It helps maintain the required internal compressor pressure and controls compressed-air flow while providing a check function against reverse flow.
Where is this kit used?
The 47690462001 rebuild kit is associated with compatible Ingersoll Rand rotary screw compressor applications, including RS45-75I/N configurations.
What are the product dimensions?
The supplied product dimensions are approximately 150 × 150 × 300 mm.
How much does the kit weigh?
The supplied weight is approximately 2.0 kg.
Is this an electrical component?
No. The 47704433001 / 47690462001 is a mechanical compressor valve service component, not an electrical or PLC module.
When should an MPCV rebuild kit be used?
It can be used during scheduled compressor maintenance or when inspection indicates that the minimum pressure valve has worn, contaminated, or developed operating problems.
Can the kit replace the complete minimum pressure valve?
A rebuild kit is intended to service the appropriate valve assembly rather than automatically replace the complete valve. Compatibility should be confirmed for the specific compressor.
Conclusion
The Ingersoll Rand 47704433001 / 47690462001 Minimum Pressure Valve Kit is a specialized compressor maintenance component used for servicing the minimum pressure check valve system in compatible Ingersoll Rand rotary screw compressors.
The minimum pressure valve plays an important role in maintaining compressor internal pressure, supporting oil circulation, controlling discharge airflow, and preventing unwanted reverse flow. When the valve’s internal components become worn or contaminated, a suitable rebuild kit can help restore normal operating performance.
With supplied dimensions of 150 × 150 × 300 mm and a weight of approximately 2.0 kg, the kit is suitable for industrial compressor maintenance and spare-parts inventory management.
For replacement planning, the most important consideration is not simply the physical size of the kit but the exact compressor model, valve configuration, and applicable part number. Confirming these details before installation helps prevent incorrect component selection and ensures that the rebuilt minimum pressure valve operates correctly within the compressor system.