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- Ingersoll Rand
- 47642702001 37952389
- Thermostatic Valve Kit
- USA
- 90 × 90 × 105 mm
- 0.32 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Ingersoll Rand 47642702001 37952389 Thermostatic Valve Kit is a service component used in the oil temperature control circuit of oil-injected screw compressors. The thermostatic valve regulates the route of compressor oil between the oil cooler and the compressor oil circuit according to operating temperature.
Oil temperature has a direct effect on lubrication, sealing, cooling, and compressor operating conditions. During startup, the thermostatic valve can help prevent excessive cooling by controlling how much oil is directed through the oil cooler. As the oil reaches the appropriate operating temperature, the valve changes its flow path to support normal oil cooling.
The 47642702001 kit is suitable for compressor maintenance where the thermostatic valve or its internal service components require replacement. It can be used during scheduled oil-system maintenance or when abnormal oil temperature behavior indicates a problem in the temperature-control circuit.
Technical Specifications
| Parameter | Details |
|---|---|
| Model | 47642702001 |
| Part Number | 37952389 |
| Product Type | Thermostatic Valve Kit |
| Application | Oil-Injected Screw Compressors |
| System Function | Compressor Oil Temperature Control |
| Valve Function | Thermostatic Oil Flow Regulation |
| Service Purpose | Thermostatic Valve Replacement / Maintenance |
| Dimensions | 90 × 90 × 105 mm |
| Weight | 0.32 kg |
Product Features
- Thermostatic Oil Control: Regulates compressor oil flow according to oil temperature.
- Oil Circuit Management: Controls whether oil is routed through the oil cooler or continues through the compressor oil circuit.
- Startup Temperature Control: Helps the compressor reach suitable oil operating conditions after startup.
- Cooling Regulation: Supports appropriate oil cooling once operating temperature increases.
- Screw Compressor Application: Intended for oil-injected compressor oil-system maintenance.
- Valve Kit Configuration: Provides service components for maintaining the applicable thermostatic valve assembly.
- Lubrication Support: Helps maintain oil conditions required for lubrication and sealing.
- Maintenance Replacement: Suitable for corrective repairs and scheduled compressor servicing.
Working Principle
Oil leaving the compressor’s oil circuit is directed toward the thermostatic control section. The valve responds to oil temperature and changes the available flow path.
When the compressor oil is relatively cool, the thermostatic valve restricts or reduces flow through the oil cooler so that the oil can warm toward its normal operating range. As oil temperature rises, the valve progressively directs more oil through the cooler.
The cooled oil then returns to the compressor lubrication and injection circuit. This temperature-dependent flow control helps avoid both excessive oil temperature and unnecessary overcooling.
Compressor Oil Circuit → Thermostatic Valve → Oil Cooler / Bypass Path → Oil Filter → Compression Element
Role in an Oil-Injected Screw Compressor Control Architecture
| System Element | Function |
|---|---|
| Screw Compression Element | Compresses air while using oil for cooling, lubrication, and sealing |
| Thermostatic Valve | Regulates oil flow according to temperature |
| Oil Cooler | Removes heat from circulating compressor oil |
| Oil Filter | Removes contaminants from compressor oil |
| Oil Circuit | Circulates cooled and filtered oil through the compressor |
| Oil Temperature Sensor | Monitors compressor oil temperature |
| Pressure Sensor | Monitors compressor pressure conditions |
| Air/Oil Separator | Separates oil from compressed air |
| Oil Return Circuit | Returns separated oil to the compressor oil system |
| Compressor Controller | Monitors operating conditions and controls compressor operation |
| Cooling System | Supports heat rejection from compressor oil and compressed air |
| Maintenance System | Tracks oil-system service and component replacement |
Industrial Applications
| Application | Typical Use |
|---|---|
| Manufacturing Plants | Oil temperature control in plant screw compressors |
| Automotive Production | Compressor systems supplying pneumatic production equipment |
| Chemical Processing | Compressor oil-system maintenance in process utilities |
| Food and Beverage | Screw compressor servicing for plant compressed-air systems |
| Pharmaceutical Facilities | Compressor maintenance for controlled utility systems |
| Textile Manufacturing | Temperature management in continuously operated compressors |
| Packaging Lines | Compressor systems supporting pneumatic machinery |
| Machine Shops | Oil-injected screw compressors for pneumatic tools |
| Industrial Utilities | Compressor cooling and lubrication circuit maintenance |
| Compressor Service Centers | Thermostatic valve inspection and replacement |
Installation and Maintenance
- Verify the Part Number: Confirm 47642702001 and 37952389 against the applicable compressor documentation before installation.
- Shut Down the Compressor: Stop the compressor and isolate it from the compressed-air network.
- Depressurize the System: Release pressure from the compressor and connected oil/air circuits before opening the valve assembly.
- Allow the Oil System to Cool: Wait until oil and surrounding components reach a safe service temperature.
- Inspect the Existing Valve: Check for contamination, mechanical wear, sticking, or other visible damage.
- Clean the Valve Area: Prevent dirt and foreign material from entering the oil circuit during maintenance.
- Replace Kit Components: Install the thermostatic valve kit components according to the applicable service procedure.
- Inspect Sealing Surfaces: Check valve interfaces and sealing areas for damage or contamination.
- Check Oil Cooler Flow Paths: Verify that the cooler and bypass path are free from restrictions.
- Check Oil Circuit Connections: Confirm that oil lines and fittings are correctly installed and secured.
- Monitor Oil Temperature: Observe oil temperature during startup and normal loaded operation after maintenance.
- Record Maintenance: Document the replacement and operating observations for future compressor service.
Related Components
| Component | Function |
|---|---|
| Oil Cooler | Removes heat from circulating compressor oil |
| Oil Filter | Filters contaminants from compressor oil |
| Thermostatic Valve Housing | Provides the flow-control body for the thermostatic valve |
| Oil Temperature Sensor | Monitors oil temperature |
| Oil Return Line | Returns recovered oil to the compressor |
| Air/Oil Separator | Separates compressor oil from compressed air |
| Screw Compression Element | Generates compressed air and uses oil for cooling and sealing |
| Pressure Sensor | Monitors compressor pressure |
| Compressor Controller | Controls compressor operating sequences |
| Cooling Fan / Cooling System | Supports heat rejection from the compressor |
| Oil Piping | Transfers oil through the lubrication and cooling circuit |
| Sealing Components | Prevent oil leakage around service connections |
Recommended Related Models
| Model | Product Type / Application |
|---|---|
| Ingersoll Rand 47642702001 37952389 | Thermostatic Valve Kit |
| Ingersoll Rand 47642702001 99289894 | Minimum Pressure Check Valve Repair Kit |
| Ingersoll Rand 47642702001 54509427 | Air/Oil Separator |
| Ingersoll Rand 47642701001 | Air/Oil Separator |
| Ingersoll Rand 47642700001 | Air Filter |
| Ingersoll Rand 47639430001 | Pre-Filter |
| Ingersoll Rand 47639431001 | Air Filter |
Key Advantages
- Supports automatic oil temperature regulation.
- Helps maintain suitable compressor oil operating conditions.
- Controls oil flow through the cooler and bypass path.
- Supports lubrication, cooling, and sealing functions.
- Suitable for thermostatic valve maintenance and replacement.
- Helps restore proper oil-system temperature behavior after valve service.
Technical FAQs
What is the purpose of the 37952389 thermostatic valve kit?
It is used to service the thermostatic valve responsible for regulating compressor oil flow according to temperature, including flow through the oil cooler and bypass path.
Why does the compressor need a thermostatic oil valve?
The compressor oil must operate within an appropriate temperature range. The thermostatic valve adjusts the oil flow path to help prevent excessive cooling during startup and excessive oil temperature during normal operation.
What symptoms may indicate a thermostatic valve problem?
Abnormally low or high oil temperature, slow temperature stabilization, unstable oil temperature, or unusual compressor oil-cooling behavior can indicate a problem with the thermostatic valve or related oil circuit components.
Should the oil cooler be inspected when replacing the thermostatic valve?
Yes. The oil cooler, bypass path, oil lines, and connections should be checked for blockage, contamination, or restricted flow because these conditions can affect thermostatic control even after the valve kit has been replaced.