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- Ingersoll Rand
- 47555210001 47552954001
- Thermostatic Valve Core
- USA
- 180 × 120 × 80 mm
- 1.0 kg
- Xiamen, China
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Product Overview
The Ingersoll Rand 47555210001 47552954001 Thermostatic Valve Core is a replacement temperature-control component used in compatible rotary screw air compressor systems. The thermostatic valve regulates the routing of compressor coolant or oil according to temperature conditions, helping the machine reach and maintain its intended operating temperature.
In an oil-injected rotary screw compressor, temperature control affects lubrication, cooling, and the separation of oil from compressed air. During startup, the coolant may need to circulate through a bypass path rather than immediately passing through the cooler. As the temperature rises, the thermostatic valve changes the flow path to direct more coolant through the cooling circuit. This helps the compressor respond to changing thermal conditions during startup and normal operation.
The valve core is the temperature-responsive element within the associated valve assembly. When the original core becomes worn or loses its temperature response, the valve may no longer regulate coolant flow as intended. Depending on the fault, the compressor may experience slow warm-up, elevated operating temperature, or inconsistent temperature control.
Replacing the core can be an alternative to replacing the complete thermostatic valve assembly when the housing and other components remain serviceable. Before ordering, the 47552954001 part number should be matched to the installed compressor and valve configuration. The associated 47555210001 reference also appears in compressor service-part listings, so the complete product identification should be retained when checking compatibility.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Ingersoll Rand |
| Part Number | 47552954001 |
| Associated Product Reference | 47555210001 |
| Product Type | Thermostatic Valve Core |
| Component Category | Compressor Temperature-Control Component |
| Primary Function | Regulates coolant flow in response to temperature |
| Application | Compatible rotary screw air compressors |
| Operating System | Compressor cooling and lubrication circuit |
| Valve Function | Temperature-responsive flow regulation |
| Installation Position | Compatible thermostatic valve assembly |
| Service Method | Replacement of the serviceable valve core |
| Dimensions | 180 × 120 × 80 mm |
| Weight | 1.0 kg |
Product Features
- Temperature-responsive operation: Supports automatic adjustment of coolant flow as the compressor warms up and operating temperature changes.
- Coolant bypass control: Helps direct coolant through the appropriate flow path during startup and normal operation.
- Thermostatic valve servicing: Allows the core to be replaced when the original temperature-responsive element no longer performs correctly.
- Support for thermal regulation: Helps maintain the intended temperature-control behavior of the compressor cooling circuit.
- Component-level repair: Can reduce the need to replace the entire valve assembly when the housing and other parts remain in good condition.
- Maintenance-focused replacement: Provides a dedicated part reference for service planning and spare-parts identification.
- Integration with existing compressor systems: Fits the designated thermostatic valve assembly when the part number and equipment configuration match.
Working Principle
The thermostatic valve core responds to changes in the temperature of the fluid passing through the associated valve assembly. Its movement changes the available flow paths, allowing the compressor’s cooling system to balance bypass circulation against heat removal through the cooler.
A typical coolant-flow arrangement is:
Compressor Airend → Coolant Circuit → Thermostatic Valve → Cooler or Bypass Path → Airend
During a cold start, the valve may direct a greater proportion of the coolant through the bypass path. This allows the compressor to warm up without immediately transferring all the coolant through the cooler. Reaching the intended operating temperature helps the system establish suitable thermal conditions for normal operation.
As the coolant temperature increases, the thermostatic element responds by changing the valve position. More coolant can then flow through the cooler, where heat is transferred to the surrounding air or another cooling medium. The resulting temperature regulation depends on the valve’s specified operating characteristics and the design of the complete compressor circuit.
If the thermostatic element sticks, loses its temperature response, or fails to move through its intended range, coolant distribution may become abnormal. A valve that remains too far toward the bypass position can contribute to overheating, while one that sends excessive coolant through the cooler during warm-up may delay temperature stabilization.
The 47552954001 core serves as the temperature-responsive part of the assembly rather than as a complete cooling system. Its performance depends on the valve housing, seals, coolant condition, cooler capacity, and surrounding circuit. When temperature problems occur, the complete flow path should be checked before the core is identified as the sole cause.
Role in the Compressor Temperature-Control System
The thermostatic valve core supports temperature regulation by controlling the position of the associated valve. The compressor’s cooling circuit, rather than the core alone, determines how much heat is removed during operation.
Compressor Airend → Coolant Flow → Thermostatic Valve Assembly → Cooler / Bypass Circuit → Compressor Airend
| System Component | Function |
|---|---|
| 47552954001 Thermostatic Valve Core | Responds to temperature changes and adjusts the valve’s flow path |
| Thermostatic Valve Housing | Provides the passages and seating surfaces for coolant control |
| Coolant or Compressor Oil | Transfers heat through the cooling and lubrication circuit |
| Oil Cooler | Removes heat from the circulating fluid |
| Compressor Airend | Generates compressed air and operating heat |
| Coolant Filter, Where Fitted | Removes contaminants from the applicable fluid circuit |
| Temperature Sensor | Provides temperature information to the controller where fitted |
| Compressor Controller | Monitors operating conditions and manages supported control functions |
| Cooling Fan | Moves air across the cooler in air-cooled installations |
| Pipework and Connections | Carry coolant between the valve, cooler, and compressor |
Industrial Applications
| Application | Typical Use |
|---|---|
| Rotary Screw Air Compressors | Maintaining temperature-responsive coolant circulation |
| Manufacturing Plants | Supporting thermal regulation in compressed-air equipment |
| Automotive Production Facilities | Maintaining compressor cooling performance for pneumatic systems |
| Packaging Plants | Supporting stable compressor operation during production shifts |
| Metalworking Workshops | Servicing temperature-control components in industrial compressors |
| Centralized Compressor Rooms | Maintaining coolant flow regulation in shared compressed-air installations |
| Industrial Utility Systems | Supporting compressor cooling and lubrication requirements |
| Compressor Overhaul Work | Replacing a worn thermostatic element during valve servicing |
| Corrective Maintenance | Addressing diagnosed temperature-control problems |
| Preventive Maintenance Programs | Inspecting thermostatic valve operation during planned compressor service |
Installation and Maintenance
- Verify the part number: Confirm 47552954001 and the associated product reference against the installed compressor’s parts identification before ordering the replacement.
- Identify the valve assembly: Locate the thermostatic valve and establish which coolant passages and connections belong to the assembly being serviced.
- Investigate the temperature fault: Review operating-temperature trends, startup behavior, cooling performance, and available controller indications before deciding that the valve core requires replacement.
- Shut down the compressor: Stop the machine using the approved shutdown procedure and prevent an unexpected restart during maintenance.
- Allow the system to cool: Wait until the coolant and surrounding components have reached a safe temperature before opening the circuit.
- Isolate and depressurize the equipment: Follow the applicable electrical isolation and pressure-release procedures before dismantling the valve assembly.
- Inspect the valve housing: Check the housing, seating surfaces, passages, and connections for contamination, corrosion, cracking, or other damage that could affect valve operation.
- Examine the removed core: Look for sticking, deposits, damaged sealing surfaces, or other signs consistent with the diagnosed temperature-control fault.
- Install the replacement core: Follow the applicable service procedure for orientation, seals, assembly sequence, and tightening requirements. Do not reuse damaged sealing components.
- Check the coolant circuit: Inspect accessible hoses, connections, cooler passages, and relevant filters for leakage or restrictions that could produce similar temperature symptoms.
- Verify temperature-control behavior: Restore the compressor according to the approved procedure and monitor warm-up, operating temperature, and cooling response under appropriate conditions.
- Record the maintenance results: Document the replacement part number, operating hours, observed fault, additional work performed, and temperature behavior after servicing.
Compatible System Components
| Component | Function |
|---|---|
| Compatible Ingersoll Rand Rotary Screw Compressor | Provides the compressor platform for the thermostatic valve core |
| Thermostatic Valve Housing | Contains the core and directs coolant through the designated flow paths |
| Oil Cooler | Removes heat from the circulating coolant or compressor oil |
| Coolant or Oil Filter | Filters the applicable fluid circuit where fitted |
| Temperature Sensor | Supplies temperature measurements where incorporated into the system |
| Compressor Controller | Monitors temperature and other supported operating conditions |
| Cooling Fan | Provides airflow across the cooler in air-cooled systems |
| Coolant Hoses and Pipework | Carry fluid through the cooling and bypass circuits |
| Seals and O-Rings | Maintain sealing at the specified valve interfaces |
| Compressor Airend | Generates compressed air and heat during operation |
Recommended Related Models
| Model / Part Number | Product Type | Main Application |
|---|---|---|
| Ingersoll Rand 47552954001 | Thermostatic Valve Core | Replacement of the specified temperature-responsive valve element |
| Ingersoll Rand 47555210001 | Compressor Service Kit Reference | Related compressor service-parts reference |
| Ingersoll Rand 22477525 | Thermostatic Valve Core | Temperature-control servicing for compatible M-Series compressor configurations |
| Ingersoll Rand 22477541 | Temperature Control Valve | Related temperature-control component for applicable compressor systems |
| Ingersoll Rand 22125215 | Thermostatic Valve Assembly | Thermostatic valve assembly used in specified M200 applications |
| Ingersoll Rand 22125223 | Brass-Body Thermostatic Valve | Temperature-control valve with a specified 71°C rating |
Key Advantages
- Supports temperature-responsive coolant-flow regulation in compatible compressor systems.
- Allows the thermostatic element to be serviced without automatically replacing the complete valve housing.
- Helps restore the intended warm-up and cooling behavior when the core is responsible for a fault.
- Provides a defined replacement reference for maintenance planning.
- Supports diagnosis and repair of compressor temperature-control problems.
Technical FAQs
What is the difference between a thermostatic valve core and a complete thermostatic valve?
The core is the temperature-responsive element that changes position as fluid temperature changes. The complete valve assembly also includes the housing and associated flow passages. Replacing only the core may be appropriate when the housing remains serviceable and the fault is isolated to the temperature-responsive element.
Can a faulty thermostatic valve core cause a compressor to overheat?
Yes. If the core fails to direct sufficient coolant through the cooler, the compressor may operate above its intended temperature range. However, a blocked cooler, restricted coolant flow, a failed cooling fan, or another system fault can produce similar symptoms and should also be investigated.
Why might a compressor take unusually long to reach its normal operating temperature after startup?
A thermostatic valve that directs too much coolant through the cooler during warm-up may delay temperature stabilization. Ambient conditions, operating load, coolant condition, and other cooling-system characteristics can also affect warm-up time, so the valve should be assessed alongside the rest of the circuit.
Should the complete thermostatic valve be replaced when the core is faulty?
Not necessarily. If the valve housing, seating surfaces, and other serviceable components remain in acceptable condition, replacing the core may be sufficient. A complete valve replacement may be necessary if the housing is damaged, the passages are compromised, or the applicable service procedure requires assembly replacement.