Introduction
The Ingersoll Rand 47704435001 / 47690462001 MPCV Rebuild Kit is a dedicated service solution for the Minimum Pressure Check Valve used on compatible rotary screw compressors.
The MPCV is an important part of the compressor's pressure-management system. It helps establish the minimum pressure required within the separator system and controls the movement of compressed air toward the discharge circuit. Correct valve operation therefore contributes to stable compressor performance, effective oil separation, and proper lubrication-system conditions.
Instead of replacing the complete valve assembly whenever internal service components become worn, a rebuild kit provides a more targeted maintenance approach when the main valve body remains in usable condition. The 47690462001 reference is specifically identified as an MPCV rebuild kit for RS45–75i/N configurations.
For industrial maintenance teams, this type of component-level service can make scheduled compressor maintenance more efficient while helping restore the mechanical performance of an existing MPCV assembly.
Technical Specifications
| Specification | Details |
|---|
| Brand | Ingersoll Rand |
| Primary Part Number | 47704435001 |
| Corresponding Part Number | 47690462001 |
| Product Type | MPCV Rebuild Kit |
| Valve Type | Minimum Pressure Check Valve |
| Application | Rotary Screw Air Compressors |
| Associated Compressor Range | RS45–75i/N |
| Main Function | Minimum Pressure Check Valve Rebuilding |
| Typical Kit Components | Springs, washers, rings, and related hardware |
| Installation Position | Minimum Pressure Check Valve Assembly |
| Maintenance Type | Preventive Maintenance / Valve Rebuild |
| Dimensions | Kit-specific; configuration-dependent |
| Weight | Kit-specific; configuration-dependent |
| Compatibility | Model- and serial-number dependent |
Recommended Companion Models
| Model | Product Name |
|---|
| 99289845 | Ingersoll Rand Minimum Pressure Check Valve |
| 24900433 | Ingersoll Rand Oil Filter Element |
| 23708423 | Ingersoll Rand Air/Oil Separator Element |
| 47557738001 | Ingersoll Rand Air Filter Element |
Frequently Selected Alternatives
| Model | Product Name |
|---|
| 47690461001 | Ingersoll Rand MPCV Service Kit |
| 47690463001 | Ingersoll Rand MPCV Service Kit |
| 47704436001 | Ingersoll Rand Compressor Service Kit |
| 47704439001 | Ingersoll Rand Compressor Service Kit |
Technical FAQs
1. What is the primary function of the Ingersoll Rand 47704435001 / 47690462001?
The product is an MPCV rebuild kit used to service the minimum pressure check valve on compatible Ingersoll Rand rotary screw compressors. The kit is intended to renew internal valve components during maintenance.
2. What does MPCV stand for?
MPCV stands for Minimum Pressure Check Valve. The valve helps maintain the required minimum pressure within the compressor system while controlling compressed-air flow toward the discharge side.
3. Why is minimum pressure important in an oil-flooded rotary screw compressor?
Maintaining appropriate minimum pressure supports proper oil separation and helps maintain the pressure conditions required by the compressor's lubrication and control systems.
4. Which Ingersoll Rand compressors are associated with 47690462001?
Available parts information identifies 47690462001 as an MPCV rebuild kit for RS45–75i/N compressor configurations. Exact compatibility should be confirmed using the compressor model and serial number.
5. What components are typically included in an MPCV rebuild kit?
The 47690462001 kit is described as containing service components such as springs, washers, rings, and related metal hardware used to rebuild the MPCV assembly.
6. Can an MPCV rebuild kit replace the complete minimum pressure check valve?
No. A rebuild kit is intended to service the internal components of an existing valve assembly. If the valve body or critical sealing surfaces are damaged beyond serviceable condition, complete valve replacement may be necessary.
7. What symptoms may indicate MPCV wear or malfunction?
Possible symptoms include abnormal separator pressure, unstable discharge pressure, unusual compressor loading behavior, increased oil carryover, or other pressure-control abnormalities.
8. How can an MPCV problem affect compressor performance?
Incorrect MPCV operation can disturb the pressure balance within the separator and discharge system. This may affect oil separation, lubrication conditions, pressure stability, and overall compressor performance.
9. Should the MPCV be inspected before installing the rebuild kit?
Yes. The valve should be inspected for wear, scoring, corrosion, damaged sealing surfaces, and abnormal mechanical movement. A rebuild is appropriate only when the main valve assembly remains serviceable.
10. What should be verified before ordering 47704435001 / 47690462001?
The compressor model, serial number, existing MPCV configuration, and current parts information should be checked before ordering. The two numbers should be treated as the same product reference for this listing, while equipment compatibility should still be confirmed.
