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- Ingersoll Rand
- 47704435001 47690462001
- Minimum Pressure Valve Kit
- USA
- 100 × 15 × 80 mm
- 0.1 kg
- Xiamen, China
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Product Overview
The Ingersoll Rand 47704435001 47690462001 Minimum Pressure Valve Kit is a service component designed for compatible Ingersoll Rand oil-injected compressor systems. The minimum pressure valve is an important part of the compressor air and oil separation system because it helps maintain the required internal pressure during operation and supports proper oil circulation.
In an oil-injected screw compressor, the minimum pressure valve works together with the air-oil separator, oil circuit, and compressed-air outlet. Its purpose is not simply to open and close the compressed-air outlet. It also helps establish the minimum pressure required inside the separator system so that the compressor can maintain appropriate oil circulation and separation conditions.
The 47690462001 designation identifies the associated Minimum Pressure Valve Kit, while 47704435001 is the supplied product reference. The specified dimensions are 100 × 15 × 80 mm, with a product weight of approximately 0.1 kg.
A properly functioning minimum pressure valve contributes to stable compressor operation, particularly during startup, low-load operation, and changing compressed-air demand.
Because valve configuration and service requirements can differ between compressor models, the complete part number and applicable equipment model should always be verified before replacement.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Ingersoll Rand |
| Product / Part Number | 47704435001 |
| Associated Part Number | 47690462001 |
| Product Type | Minimum Pressure Valve Kit |
| Primary Function | Minimum pressure regulation |
| Application | Oil-injected compressor systems |
| Main Function | Maintains minimum internal compressor pressure |
| Dimensions | 100 × 15 × 80 mm |
| Weight | 0.1 kg |
| Installation | Compressor air/oil separation system |
| Mounting | Equipment-specific valve assembly |
| Maintenance Category | Service / replacement kit |
| Operating Environment | Industrial compressor environment |
| Application | Compressor pressure and oil-circulation control |
| System Integration | Air-oil separator and compressed-air circuit |
Function and Working Principle
The primary function of the Ingersoll Rand 47704435001 47690462001 Minimum Pressure Valve Kit is to help maintain a minimum pressure within the compressor separator system.
A simplified compressor flow path can be represented as:
Air Intake → Compression Element → Air/Oil Separator → Minimum Pressure Valve → Compressed-Air Outlet
At the same time, separated oil follows a separate circulation path:
Air/Oil Separator → Oil Return Circuit → Compressor Element
During compressor startup and low-demand conditions, the minimum pressure valve helps prevent the internal pressure from falling below the level required for proper operation.
Once the compressor reaches suitable operating conditions, the valve allows compressed air to flow toward the downstream air system.
The valve therefore helps balance several operating requirements:
- Internal compressor pressure
- Oil circulation
- Air-oil separation
- Compressed-air delivery
- Compressor startup behavior
- System stability
The precise opening characteristics and operating pressure depend on the compressor design and the applicable valve assembly.
Role in Industrial Compressor Systems
The minimum pressure valve is an important component in many oil-injected screw compressor systems.
A typical compressor may contain:
- Air Filter
- Intake Valve
- Compressor Element
- Oil Injection System
- Air-Oil Separator
- Minimum Pressure Valve
- Oil Filter
- Oil Cooler
- Air Cooler
- Oil Return Line
- Check Valve
- Pressure Sensors
- Temperature Sensors
- Compressor Controller
- Compressed-Air Outlet
The minimum pressure valve works closely with the air-oil separator.
The separator removes oil from the compressed-air stream, while the minimum pressure valve controls the flow of compressed air leaving the separator system. Maintaining appropriate internal pressure supports effective oil separation and oil circulation.
If the valve does not operate correctly, the compressor may experience abnormal pressure behavior, poor oil circulation, or unstable operating conditions.
Industrial Applications
The Ingersoll Rand 47704435001 / 47690462001 Minimum Pressure Valve Kit is intended for maintenance of compatible industrial compressor systems.
Industrial Air Compressors
Oil-injected screw compressors are widely used in manufacturing plants and industrial facilities. The minimum pressure valve helps maintain proper compressor operating conditions.
Manufacturing Facilities
Production equipment often depends on a stable compressed-air supply. Proper valve operation helps the compressor respond correctly to changing air demand.
Automotive Manufacturing
Automotive production lines use compressed air for pneumatic tools, actuators, assembly equipment, and automated systems. Reliable compressor operation is therefore essential.
Packaging Systems
Packaging machinery commonly uses pneumatic cylinders, valves, and actuators. A properly maintained compressor contributes to stable pneumatic performance.
Process Industries
Chemical, petrochemical, food processing, and other industrial facilities may use oil-injected compressors as plant utility equipment.
Continuous-Duty Compressor Installations
Compressors operating for extended periods require reliable pressure-control and lubrication components. Regular inspection of the minimum pressure valve can help identify potential problems before they result in major equipment downtime.
Installation and System Integration
Correct installation of the 47704435001 / 47690462001 Minimum Pressure Valve Kit is important because the component operates within the compressor’s pressurized air and oil circuit.
Before installation, maintenance personnel should verify:
- Compressor model
- Correct valve kit part number
- Valve dimensions
- Connection configuration
- Sealing components
- Valve housing condition
- Oil condition
- Separator condition
- Applicable pressure specifications
- Maintenance requirements
Basic Installation Procedure
- Shut down the compressor according to the approved maintenance procedure.
- Isolate the compressor from electrical and pneumatic energy sources.
- Allow the equipment to cool to a safe maintenance temperature.
- Completely relieve applicable internal pressure.
- Confirm that the separator system is safe to service.
- Locate the minimum pressure valve assembly.
- Remove the existing valve or service components.
- Inspect the valve housing and connection surfaces.
- Clean the relevant sealing surfaces.
- Inspect O-rings, gaskets, springs, and related components.
- Compare the replacement kit with the removed components.
- Install the new 47704435001 / 47690462001 kit correctly.
- Ensure that all sealing components are properly positioned.
- Secure the valve assembly according to the equipment maintenance specification.
- Reconnect all applicable air and oil connections.
- Restore the compressor to service.
- Start the compressor under controlled conditions.
- Monitor separator pressure and outlet pressure.
- Check for air or oil leakage.
- Verify normal compressor loading and unloading behavior.
- Record the maintenance operation.
Because the minimum pressure valve is part of a pressurized system, servicing should only be performed after the compressor has been properly isolated and depressurized.
Minimum Pressure Valve Maintenance Considerations
The minimum pressure valve can be affected by contamination, mechanical wear, damaged sealing components, or changes in spring and valve performance.
Potential warning signs include:
- Abnormal separator pressure
- Slow compressor pressure buildup
- Unstable discharge pressure
- Excessive oil carryover
- Poor oil circulation
- Abnormal compressor loading
- Abnormal unloading behavior
- Air leakage
- Oil leakage
- Increased operating temperature
A faulty minimum pressure valve should not automatically be assumed to be the only cause of abnormal compressor behavior.
Similar symptoms can also be associated with:
- Blocked oil-return lines
- Restricted air-oil separators
- Incorrect oil level
- Contaminated oil
- Faulty sensors
- Intake valve problems
- Control-system issues
- Downstream air-system problems
A complete system diagnosis is therefore recommended before replacing major components.
Relationship Between the Minimum Pressure Valve and Air-Oil Separator
The minimum pressure valve and air-oil separator perform different but closely related functions.
The air-oil separator is responsible for separating oil from the compressed-air stream.
The minimum pressure valve controls the release of compressed air from the separator system and helps maintain the internal pressure required for stable operation.
The relationship can be simplified as:
Compression → Air/Oil Separation → Minimum Pressure Regulation → Compressed-Air Delivery
If the minimum pressure valve is operating incorrectly, separator performance can also be affected because the pressure conditions inside the separator system may change.
For this reason, when troubleshooting excessive oil carryover or abnormal separator pressure, both the separator and minimum pressure valve should be considered.
Compatible System Components
The minimum pressure valve kit typically works together with several components within an oil-injected compressor system.
| Component | Function |
|---|---|
| Minimum Pressure Valve | Maintains minimum separator-system pressure |
| Air-Oil Separator | Separates oil from compressed air |
| Compressor Element | Compresses incoming air |
| Air Filter | Removes contaminants from intake air |
| Oil Filter | Filters circulating lubrication oil |
| Oil Cooler | Controls oil temperature |
| Air Cooler | Reduces compressed-air temperature |
| Oil Return Line | Returns separated oil to the compressor |
| Intake Valve | Controls compressor air intake |
| Check Valve | Helps control air or oil flow direction |
| Pressure Sensor | Monitors system pressure |
| Temperature Sensor | Monitors operating temperature |
| Compressor Controller | Controls compressor operation |
| Oil Reservoir | Stores and circulates lubrication oil |
The exact configuration depends on the specific Ingersoll Rand compressor model.
Recommended Alternative Models
The following related components and product categories may be considered when evaluating compressor pressure-control and service requirements. They should not automatically be treated as direct replacements for the 47704435001 / 47690462001.
| Model / Series | Type | Key Feature | Application |
|---|---|---|---|
| Ingersoll Rand 47704435001 / 47690462001 | Minimum Pressure Valve Kit | Minimum pressure control | Compatible compressor systems |
| Ingersoll Rand Minimum Pressure Valve Series | Pressure Valve | Separator pressure regulation | Oil-injected compressors |
| Ingersoll Rand Air-Oil Separator Series | Air-Oil Separator | Oil and air separation | Compressor maintenance |
| Ingersoll Rand Oil Filter Series | Oil Filter | Lubrication oil filtration | Compressor systems |
| Ingersoll Rand Air Filter Series | Air Filter | Intake air filtration | Compressor intake |
| Ingersoll Rand Oil Return Components | Oil Return Assembly | Separated-oil recovery | Lubrication systems |
| Ingersoll Rand Check Valve Series | Check Valve | Flow-direction control | Compressor air/oil circuits |
When selecting a replacement valve kit, the compressor model, complete part number, valve configuration, dimensions, sealing arrangement, operating-pressure requirements, and housing design should all be verified.
Key Advantages
- Designed for compatible Ingersoll Rand compressor systems
- Helps maintain minimum internal compressor pressure
- Supports stable air-oil separator operation
- Helps maintain proper oil circulation
- Supports reliable compressor startup
- Helps regulate compressed-air discharge
- Suitable for oil-injected compressor systems
- Compact component design
- Dimensions of 100 × 15 × 80 mm
- Product weight of approximately 0.1 kg
- Associated with part number 47690462001
- Suitable for preventive maintenance
- Useful for compressor service and replacement
- Helps support stable long-term compressor operation
Technical FAQs
What is the Ingersoll Rand 47704435001 47690462001?
The Ingersoll Rand 47704435001 / 47690462001 is identified as a Minimum Pressure Valve Kit designed for compatible oil-injected compressor systems.
What is the main function of a minimum pressure valve?
Its primary function is to help maintain the minimum pressure required within the compressor’s separator and lubrication system while controlling compressed-air discharge.
Why is minimum pressure important?
Maintaining suitable internal pressure supports proper oil circulation and air-oil separation and helps the compressor operate correctly during startup and changing load conditions.
What are the dimensions of the valve kit?
The specified dimensions are 100 × 15 × 80 mm.
How much does the valve kit weigh?
The specified weight is approximately 0.1 kg.
What symptoms may indicate a minimum pressure valve problem?
Possible symptoms include abnormal separator pressure, slow pressure buildup, unstable discharge pressure, excessive oil carryover, abnormal loading behavior, or air leakage.
Can a minimum pressure valve cause oil carryover?
A malfunctioning valve can contribute to abnormal separator operating conditions, which may affect oil separation. However, excessive oil carryover can have several causes and should be diagnosed as a complete system problem.
How often should the minimum pressure valve be replaced?
Replacement intervals depend on the specific compressor model, operating conditions, maintenance schedule, and condition of the valve and associated components.
Can another valve with the same dimensions replace this kit?
Not necessarily. Valve dimensions alone are insufficient to establish compatibility. Operating pressure, flow characteristics, connection configuration, sealing arrangement, and compressor model must also be considered.
What should be checked before installation?
The compressor model, part number, valve configuration, sealing components, housing condition, operating pressure, and applicable maintenance specifications should be verified before installation.
Is it safe to replace the valve while the compressor is pressurized?
No. The compressor must be properly shut down, isolated, and depressurized before servicing components within the pressurized air and oil circuit.
Conclusion
The Ingersoll Rand 47704435001 47690462001 Minimum Pressure Valve Kit is an important pressure-control component for compatible oil-injected compressor systems. Its primary role is to help maintain suitable internal pressure within the separator system while supporting proper oil circulation and compressed-air delivery.
With specified dimensions of 100 × 15 × 80 mm and a weight of approximately 0.1 kg, the valve kit is a compact but important component within the compressor’s air and oil circuit.
The minimum pressure valve works closely with the air-oil separator, oil filter, oil-return circuit, compressor element, and control system. Proper operation of these components is essential for maintaining stable compressor performance.
For maintenance engineers and industrial equipment operators, correct part-number identification is critical before replacement. The 47704435001 / 47690462001 designation, compressor model, valve configuration, sealing arrangement, pressure requirements, and installation specifications should all be verified.
Regular inspection and timely service of the minimum pressure valve can help maintain stable separator pressure, proper oil circulation, reliable compressor startup, and dependable long-term operation of compatible Ingersoll Rand compressor systems.