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- Ingersoll Rand
- 47556185001 47552954001
- Service Kit Thermostatic Valve
- USA
- 180 × 120 × 80 mm
- 1.0 kg
- Xiamen, China
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Product Overview
The Ingersoll Rand 47556185001 47552954001 Service Kit Thermostatic Valve is a replacement service kit for the thermostatic valve used in compatible rotary screw air compressors. The valve regulates oil flow through the compressor’s cooling circuit according to oil temperature, helping the machine reach and maintain its intended operating temperature.
In an oil-injected rotary screw compressor, oil performs several functions: it lubricates moving components, helps seal the compression chamber, and carries heat away from the airend. When the compressor starts from cold, the oil needs to warm up to its normal operating range. Once the oil becomes hot enough, the thermostatic valve directs more of the oil through the cooler to remove excess heat.
The 47552954001 kit is listed as a thermostatic valve service kit for selected Ingersoll Rand R90–R110 compressor maintenance configurations. It is also included in certain 8,000-hour service-kit arrangements. The precise application depends on the compressor model, cooling configuration, and installed valve assembly.
For maintenance engineers, this kit is relevant when investigating abnormal oil temperature, inconsistent temperature regulation, or suspected leakage through the thermostatic valve. These symptoms can also result from cooler restrictions, inadequate ventilation, incorrect oil level, or other cooling-system faults, so diagnosis should cover the complete oil circuit before the valve is rebuilt.
The kit services the valve rather than replacing the entire compressor cooling system. The actual repair scope depends on the components supplied in the specific kit and the condition of the existing valve body.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Ingersoll Rand |
| Part Number | 47556185001 / 47552954001 |
| Product Type | Service Kit Thermostatic Valve |
| Application | Rotary Screw Air Compressor |
| Associated Component | Thermostatic Valve |
| Primary Function | Servicing the compressor oil-temperature control valve |
| System | Compressor lubrication and cooling circuit |
| Service Context | Scheduled maintenance and valve repair |
| Dimensions | 180 × 120 × 80 mm |
| Weight | 1.0 kg |
Product Features
- Thermostatic valve servicing: Supports maintenance of the valve that regulates oil flow according to temperature.
- Oil-temperature control maintenance: Helps restore the intended valve operation when serviceable internal components have deteriorated.
- Cooling-circuit support: Maintains the oil-flow control arrangement between the compressor and its cooler.
- Scheduled service application: Can be included in applicable compressor maintenance work where the kit is specified.
- Dedicated replacement reference: Identifies the service kit separately from a complete thermostatic valve assembly.
- Existing valve reuse: Allows repair of a suitable valve body when the specified internal components can be replaced.
- Temperature-related troubleshooting: Relevant when valve operation is suspected of contributing to abnormal compressor oil temperatures.
Working Principle
The thermostatic valve responds to oil temperature by changing the route taken by oil through the compressor’s cooling circuit. Depending on the valve design, the temperature-sensitive element shifts the internal valve position to regulate flow through the cooler and the associated bypass path.
A simplified oil circuit is:
Oil Sump → Oil Filter → Thermostatic Valve → Oil Cooler or Bypass Path → Airend
When the oil is relatively cold, the valve can direct a greater proportion of the flow around the cooler so that the oil reaches its normal operating range more quickly. As the oil temperature rises, the valve progressively directs more flow through the cooler, allowing heat to be removed before the oil returns to the airend.
For example, a compressor operating in a cool factory during a morning startup may need time for the oil to warm up. Later, under sustained production load, the oil temperature rises and the cooler becomes more important. The thermostatic valve adjusts the oil-flow route to accommodate these changing conditions.
The service kit is used when the valve requires internal maintenance. Worn seals or deteriorated internal components may affect valve movement, sealing, or temperature response. After repair, the valve should be checked as part of the complete oil circuit to confirm that the compressor warms up normally and maintains its expected operating temperature.
Role in the Compressor Oil-Temperature Control System
The thermostatic valve sits within the compressor’s oil circulation circuit, where it determines how much oil passes through the cooler and how much follows the bypass route. The service kit supports maintenance of this temperature-regulating mechanism.
| System Element | Function |
|---|---|
| Compressor Airend | Uses circulating oil for lubrication, sealing, and heat removal |
| Oil Sump | Collects and stores circulating compressor oil |
| Oil Filter | Removes contaminants from the circulating oil |
| Thermostatic Valve | Regulates oil routing according to temperature |
| 47552954001 Service Kit | Supports maintenance of the thermostatic valve |
| Oil Cooler | Removes heat from oil passing through the cooling circuit |
| Oil Bypass Passage | Routes oil around the cooler when required by valve operation |
| Oil Return Circuit | Carries oil back toward the airend |
| Temperature Monitoring System | Monitors oil or compressor operating temperature where fitted |
| Compressor Controller | Monitors operating conditions and manages configured alarms or shutdowns |
Industrial Applications
| Application | Practical Use |
|---|---|
| Industrial Manufacturing | Maintaining oil-temperature regulation in compressors supplying production equipment |
| Automotive Plants | Servicing the oil-cooling circuit of compressors supporting pneumatic machinery |
| Packaging Facilities | Maintaining compressor temperature control during sustained production cycles |
| Chemical Processing | Supporting oil-temperature regulation in plant compressed-air systems |
| Central Compressor Rooms | Servicing thermostatic valves on compatible rotary screw compressors |
| Continuous-Duty Air Systems | Addressing valve wear that may affect temperature regulation during extended operation |
| Compressor Maintenance Workshops | Rebuilding serviceable thermostatic valve assemblies |
| Preventive Maintenance Programs | Including valve service in applicable scheduled maintenance work |
| Compressor Troubleshooting | Investigating suspected valve-related temperature fluctuations or oil-cooling problems |
| Industrial Utility Systems | Maintaining the compressor oil circuit supplying plant-wide compressed air |
Installation and Maintenance
- Verify the complete part number: Confirm 47556185001 and 47552954001 against the installed valve and the compressor’s parts configuration.
- Identify the compressor configuration: Check the model, serial number, cooling arrangement, and installed thermostatic valve before selecting the service kit.
- Shut down and isolate the compressor: Follow the equipment’s approved shutdown procedure and isolate the relevant energy sources before starting maintenance.
- Depressurize the oil circuit: Confirm that the system has reached a safe pressure condition before opening any oil-containing component.
- Allow the equipment to cool: Wait until the oil and valve assembly are at a safe working temperature to prevent burns.
- Inspect the valve externally: Check for oil leakage, damaged connections, corrosion, and signs of overheating before dismantling the assembly.
- Document the original arrangement: Record the valve orientation and the position of relevant connections to support correct reassembly.
- Inspect internal components: After disassembly, examine the temperature-sensitive element, sealing surfaces, and other serviceable parts for wear or damage.
- Replace the specified components: Use the parts supplied in the verified kit and follow the applicable service instructions. Do not assume that unlisted components are included.
- Check valve movement and sealing: Confirm that the serviced mechanism moves correctly and that the relevant sealing surfaces are properly seated.
- Test the oil-temperature response: After reassembly, restore the system according to the approved procedure and monitor oil temperature, leakage, and operating behavior during startup and normal operation.
- Record the maintenance results: Document the kit reference, compressor identification, components replaced, observed condition, and post-service test results.
Compatible System Components
| Component | Function |
|---|---|
| Ingersoll Rand 47552954001 Thermostatic Valve Kit | Services the thermostatic valve |
| Thermostatic Valve Assembly | Regulates oil flow through the cooler and bypass circuit |
| Ingersoll Rand 23424922 Oil Filter | Filters circulating oil in applicable compressor configurations |
| Ingersoll Rand 23545841 Air/Oil Separator | Separates entrained oil from compressed air |
| Ingersoll Rand 23429822 Air Filter | Filters incoming air before compression |
| Ingersoll Rand 23497001 Panel Filter | Filters air entering the applicable compressor cabinet ventilation assembly |
| Oil Cooler | Removes heat from the compressor’s circulating oil |
| Oil Bypass Passage | Provides an alternative oil-flow path around the cooler |
| Oil Lines and Fittings | Carry oil between the valve, cooler, and compressor |
| Temperature Sensors | Provide temperature measurements where fitted |
| Compressor Controller | Monitors operating conditions and processes configured alarms |
Recommended Related Models
| Model / Part Number | Product Type | Typical Application |
|---|---|---|
| Ingersoll Rand 47552954001 | Thermostatic Valve Service Kit | Reference kit for compatible thermostatic valve assemblies |
| Ingersoll Rand 47556185001 | Service Kit Part Reference | Associated catalog reference supplied for this product |
| Ingersoll Rand 47555210001 | 8,000-Hour Air-Cooled Service Kit | Scheduled maintenance package for specified R90–R110NE configurations |
| Ingersoll Rand 99289894 | Minimum Pressure Check Valve Repair Kit | Servicing the minimum pressure check valve |
| Ingersoll Rand 23531585 | Intake Valve Kit | Servicing the intake valve on applicable compressor configurations |
| Ingersoll Rand 23424922 | Oil Filter | Oil-circuit filtration maintenance |
| Ingersoll Rand 23429822 | Air Filter | Compressor intake filtration maintenance |
| Ingersoll Rand 23497001 | Panel Filter | Compressor cabinet ventilation pre-filtration |
| Ingersoll Rand 23545841 | Air/Oil Separator | Air/oil separation element replacement |
| Ingersoll Rand 47555464001 | Cooler Seal Kit | Cooler sealing maintenance on applicable water-cooled configurations |
| Ingersoll Rand R90 | Rotary Screw Air Compressor | Check thermostatic valve and service-kit compatibility |
| Ingersoll Rand R110 | Rotary Screw Air Compressor | Verify the installed valve and cooling configuration |
| Ingersoll Rand R90NE | Rotary Screw Air Compressor | Check compatibility with the applicable NE configuration |
| Ingersoll Rand R110NE | Rotary Screw Air Compressor | Related compressor configuration for service-kit selection |
| Ingersoll Rand RS90 | Rotary Screw Air Compressor | Related RS-series compressor; verify the installed valve reference |
| Ingersoll Rand RS110 | Rotary Screw Air Compressor | Related RS-series compressor for maintenance-parts comparison |
Key Advantages
- Supports servicing of the compressor’s oil-temperature control valve.
- Helps restore correct oil routing when compatible internal components are worn.
- Supports maintenance of the lubrication and cooling circuit.
- Provides a dedicated part reference for service planning.
- Can be used during scheduled maintenance when specified for the installed compressor.
Technical FAQs
What does the thermostatic valve control in an oil-injected rotary screw compressor?
It regulates oil flow through the cooler and bypass path according to temperature. This helps the compressor warm up appropriately after startup and remove excess heat during sustained operation.
Is the 47552954001 kit a complete replacement valve?
The product is identified as a thermostatic valve service kit, not necessarily a complete valve assembly. Confirm the kit contents and the condition of the existing valve before deciding whether a rebuild or complete assembly replacement is appropriate.
Which compressor configurations should be checked before using this kit?
The 47552954001 reference appears in maintenance arrangements for selected R90–R110NE compressors. Confirm the exact model, serial number, cooling method, and installed valve configuration before ordering or installing the kit.
What could cause oil temperature to remain too high after the valve has been serviced?
Possible causes include a restricted oil cooler, inadequate cooling airflow, incorrect oil level, contaminated oil, or a valve that has not been assembled or installed correctly. Check the complete cooling circuit and verify valve operation rather than assuming the service kit itself is the cause.