Introduction
The Ingersoll Rand 47704436001 / 47690462001 MPCV Rebuild Kit is a specialized maintenance component for servicing the Minimum Pressure Check Valve on compatible rotary screw compressors.
The MPCV plays an important role in the compressor's internal pressure-management system. By maintaining the required minimum pressure within the separator system, it helps establish the operating conditions needed for effective oil separation and proper lubricant circulation.
The 47690462001 is documented as an MPCV rebuild kit for RS45–75i/N configurations. Product information describes the kit as containing springs, washers, rings, and related metal components intended for rebuilding the existing valve assembly.
For maintenance teams, rebuilding a serviceable MPCV can be a more focused approach than replacing the entire valve. It allows worn internal service components to be renewed while retaining the existing assembly when its major components remain within acceptable condition.
The 47704436001 / 47690462001 references are treated as the same product listing for this page.
Technical Specifications
| Specification | Details |
|---|
| Brand | Ingersoll Rand |
| Primary Part Number | 47704436001 |
| Corresponding Part Number | 47690462001 |
| Product Type | MPCV Rebuild Kit |
| Valve Type | Minimum Pressure Check Valve |
| Application | Rotary Screw Air Compressors |
| Reported Compressor Range | RS45–75i/N |
| Primary Function | MPCV Internal Component Rebuilding |
| Typical Components | Springs, Washers, Rings and Related Metal Components |
| Service Type | Preventive / Corrective Valve Maintenance |
| Installation Position | Minimum Pressure Check Valve Assembly |
| Dimensions | Kit-specific; verify against the supplied configuration |
| Weight | Kit-specific; verify against the supplied configuration |
| Compatibility | Model-, serial-number and configuration-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 |
| 47690563001 | Ingersoll Rand Thermal Valve Rebuild Kit |
| 47704435001 | Ingersoll Rand Compressor Service Kit |
Technical FAQs
1. What is the primary function of Ingersoll Rand 47704436001 / 47690462001?
It is an MPCV rebuild kit used to service the Minimum Pressure Check Valve on compatible Ingersoll Rand rotary screw compressors. The 47690462001 reference is explicitly described as a “Kit, MPCV Rebuild.”
2. What does MPCV mean?
MPCV stands for Minimum Pressure Check Valve. It is used to maintain the required minimum pressure within the compressor's separator system while controlling compressed-air flow toward the discharge circuit.
3. Which compressors are associated with 47690462001?
Available parts information specifically identifies the kit for RS45–75i/N compressor configurations.
4. Why does a rotary screw compressor need a minimum pressure check valve?
The MPCV helps establish minimum internal pressure required for proper oil separation and lubrication-system operation. It also controls the transition of compressed air from the separator system into the downstream air circuit.
5. What components are included in the 47690462001 rebuild kit?
Available product information describes the kit as containing components such as springs, washers, rings, and metal pieces used to rebuild the MPCV assembly.
6. Can this kit be used when the complete MPCV is damaged?
A rebuild kit is intended for serviceable valve assemblies. If the valve body, sealing surfaces, or other major components have excessive wear or physical damage, replacing the complete MPCV may be more appropriate.
7. What symptoms may indicate MPCV problems?
Possible indications include abnormal separator pressure, unstable compressor loading behavior, excessive oil carryover, unusual pressure fluctuations, or abnormal compressor operating conditions. These symptoms can also originate elsewhere in the system and require proper diagnosis.
8. How does MPCV condition affect oil separation?
The MPCV helps maintain the pressure conditions under which the separator system operates. Incorrect valve operation can disturb the pressure balance and consequently affect oil-separation performance.
9. Should the MPCV be inspected before rebuilding it?
Yes. The valve should be checked for scoring, corrosion, contamination, damaged sealing surfaces, spring condition, and unrestricted mechanical movement before installing the rebuild components.
10. What should be verified before ordering 47704436001 / 47690462001?
The compressor model, serial number, MPCV configuration, and existing part number should be checked. The documented RS45–75i/N application makes configuration verification particularly important.
