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- Ingersoll Rand
- 47627051001 22064695
- Minimum Pressure Check Valve Kit
- USA
- 100 × 15 × 80 mm
- 0.1 kg
- Xiamen, China
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Product Overview
The Ingersoll Rand 47627051001 22064695 Minimum Pressure Check Valve Kit is a service component for compatible oil-injected rotary screw air compressors. The minimum pressure valve regulates the pressure maintained inside the oil separator vessel during startup and normal operation. This pressure is necessary for proper oil circulation and helps the compressor’s oil separation system function as intended.
When a compressor starts, the pressure inside the separator vessel must rise sufficiently before the valve allows compressed air to flow freely toward the downstream system. Maintaining this initial pressure supports oil movement through the lubrication circuit, particularly during the period when the compressor is building operating pressure. Once the required opening conditions are reached, the valve permits compressed air to continue toward the outlet.
The valve also performs a check-valve function. It helps prevent downstream compressed air from flowing backward into the compressor when the machine stops. If the internal sealing surfaces, spring, or moving components deteriorate, the valve may lose its ability to maintain pressure or prevent reverse flow.
A faulty minimum pressure valve can produce symptoms that are easy to confuse with other compressor problems. Slow pressure buildup, abnormal oil carryover, unstable oil circulation, or air leaking back toward the compressor after shutdown may justify inspection of the valve. However, similar symptoms can result from separator restrictions, oil return problems, or faults elsewhere in the pressure system.
The 22064695 kit is identified as a minimum pressure valve service kit associated with selected Ingersoll Rand UP5 and UP6 compressor configurations. Depending on the installed valve design, the kit may contain service components such as a spring, sealing elements, a piston or guide, and retaining parts. The exact contents and compatibility should be checked against the applicable compressor parts list before maintenance begins.
For maintenance engineers, the key consideration is whether the valve can be restored using the specified service components or whether the complete valve assembly requires replacement. Correct servicing should restore the intended pressure response and reverse-flow protection without introducing leaks or restricting the compressor’s discharge path.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Ingersoll Rand |
| Model Reference | 47627051001 |
| Part Number | 22064695 |
| Product Type | Minimum Pressure Check Valve Kit |
| Product Category | Rotary Screw Air Compressor Spare Part |
| Primary Function | Maintains minimum separator vessel pressure and checks reverse airflow |
| Main System | Compressor pressure and oil separation system |
| Installation Location | Minimum pressure valve assembly at the separator vessel outlet |
| Operating Principle | Pressure-responsive valve operation with check-valve function |
| Startup Function | Helps maintain pressure needed for oil circulation |
| Shutdown Function | Helps prevent downstream compressed air from flowing backward |
| Maintenance Purpose | Servicing the compatible minimum pressure valve assembly |
| Associated Equipment | Selected Ingersoll Rand UP5 and UP6 compressor configurations |
| Compatibility Requirement | Verify the installed valve and compressor configuration |
| Dimensions | 100 × 15 × 80 mm |
| Weight | 0.1 kg |
Product Features
- Minimum pressure regulation: Supports the pressure conditions required within the separator vessel during compressor startup and operation.
- Reverse-flow protection: Helps prevent downstream compressed air from returning to the compressor after shutdown.
- Oil circulation support: Maintains the pressure conditions needed for the compressor’s lubrication circuit to operate correctly.
- Valve servicing: Supports maintenance of the applicable minimum pressure valve using the specified service components.
- Pressure response restoration: Addresses internal wear that can interfere with the valve’s opening and closing behavior.
- Sealing maintenance: Helps restore sealing performance when the relevant sealing components are included in the kit.
- Separator system compatibility: Works within the pressure control arrangement associated with the oil separator vessel.
- Maintenance identification: The 22064695 part number provides a defined reference for parts identification and service records.
- Configuration-specific fitment: Requires confirmation of the valve assembly and compressor version before installation.
- System troubleshooting support: Relevant when pressure loss, reverse airflow, or abnormal oil separation is traced to the minimum pressure valve.
Working Principle
The minimum pressure check valve combines pressure regulation with one-way flow control. Its internal spring-loaded mechanism keeps the valve closed or restricts its opening until the pressure on the compressor side reaches the required operating threshold. The exact opening pressure depends on the installed valve specification.
Rotary Screw Air End → Oil Separator Vessel → Minimum Pressure Check Valve → Aftercooler → Downstream Air System
During startup, compressed air and entrained oil enter the separator vessel. The valve retains pressure within the vessel while the compressor builds up operating conditions. This helps maintain the pressure differential needed to move lubricating oil through the intended circuit.
Once the pressure reaches the valve’s opening threshold, the valve allows compressed air to pass toward the aftercooler and downstream piping. It must then maintain the appropriate flow while preventing unwanted pressure loss through its sealing surfaces.
When the compressor stops, pressure may remain in the plant’s receiver and distribution piping. The check function helps prevent this downstream pressure from flowing backward into the separator vessel and internal compressor components. A worn seat, damaged seal, weakened spring, or sticking internal mechanism can compromise this behavior.
The 22064695 service kit is relevant when inspection identifies a fault in the serviceable parts of the compatible valve. The valve body and other non-kit components should also be examined, because damaged seating surfaces or a defective housing may prevent a successful repair even when the internal parts are replaced.
Troubleshooting should include the separator vessel, oil return circuit, and downstream pressure conditions. A valve that fails to open correctly can restrict air delivery, while one that fails to close or seal correctly can allow pressure to escape or reverse flow to occur. These different failure modes require inspection rather than assuming that every pressure-related symptom has the same cause.
Role in an Ingersoll Rand Compressor Pressure Control System
The minimum pressure check valve sits at the boundary between the separator vessel and the downstream compressed air circuit. It helps retain pressure during startup, supports oil circulation, and controls the release of compressed air from the separator system.
Air End → Separator Vessel → Minimum Pressure Check Valve → Aftercooler → Air Receiver → Plant Distribution Network
| System Component | Function |
|---|---|
| 22064695 Minimum Pressure Check Valve Kit | Services the applicable minimum pressure valve mechanism |
| Minimum Pressure Valve Assembly | Maintains the required internal pressure and checks reverse airflow |
| Oil Separator Vessel | Separates oil from compressed air and provides the pressure vessel for the separation stage |
| Oil Separator Element | Removes entrained oil from compressed air |
| Oil Return Line | Returns recovered oil to the lubrication circuit |
| Compressor Air End | Compresses incoming air and mixes it with lubricating oil |
| Aftercooler | Reduces compressed air temperature before downstream delivery |
| Air Receiver | Stores compressed air for plant demand |
| Downstream Check or Isolation Valves | Control airflow within the external compressed air network where fitted |
| Pressure Sensors | Monitor operating pressure for control and fault detection |
| Compressor Controller | Coordinates loading, unloading, and shutdown functions |
Correct valve operation depends on the condition of the internal mechanism and the wider pressure circuit. A serviceable valve cannot compensate for a blocked oil return line, damaged separator element, or unrelated leakage elsewhere in the compressor.
Industrial Applications
| Application | Typical Use |
|---|---|
| General Manufacturing | Maintaining pressure control in compressors supplying pneumatic production equipment |
| Automotive Production | Supporting separator pressure and oil circulation in central compressor installations |
| Metalworking Plants | Servicing minimum pressure valves in compressors supplying machine tools and air-powered equipment |
| Packaging Facilities | Maintaining compressor pressure behavior during changing production demand |
| Plastics Processing | Supporting pressure control in compressors supplying pneumatic machinery |
| Textile Manufacturing | Maintaining oil separation and pressure control in industrial compressed air systems |
| Industrial Assembly | Addressing valve-related pressure problems in compressors serving assembly tools |
| Central Compressor Rooms | Servicing minimum pressure valve assemblies in shared plant air systems |
| Continuous-Duty Operations | Maintaining pressure control in compressors operating for extended shifts |
| Preventive Maintenance Programs | Replacing worn valve components when inspection identifies deterioration |
The appropriate service interval depends on compressor operating hours, pressure behavior, contamination, and the condition of the valve assembly. Maintenance should follow the applicable equipment procedure rather than relying on a universal replacement interval.
Installation and Maintenance
- Verify the part number: Confirm 47627051001 and 22064695 against the compressor’s parts documentation and the installed minimum pressure valve configuration.
- Isolate the compressor: Stop the machine, disconnect the required electrical supply, and follow the site’s lockout and tagout procedure.
- Depressurize the system: Release stored pressure from the separator vessel and relevant piping according to the compressor service procedure before opening the assembly.
- Allow components to cool: Wait until the oil and surrounding components reach a safe temperature for maintenance.
- Record the valve arrangement: Note the valve orientation, connection positions, and component order before disassembly.
- Inspect the valve body: Check the seating surfaces, internal bore, and mounting interfaces for scoring, contamination, corrosion, or mechanical damage.
- Verify the kit contents: Match the supplied service components against the applicable parts list before removing the original components.
- Examine internal parts: Check the spring, piston or moving element, guides, retainers, and seals included in the assembly for wear or deformation.
- Clean the service area: Prevent dirt and foreign material from entering the separator vessel or downstream air circuit during repair.
- Install the service components: Follow the applicable procedure for component orientation, seal placement, lubrication requirements, and tightening specifications.
- Verify valve operation: After reassembly and an approved restart, check pressure buildup, discharge behavior, leakage, and reverse-flow symptoms.
- Document the service: Record the installed kit reference, replaced components, observed fault, and post-maintenance pressure readings.
If the compressor continues to lose pressure or exhibit abnormal oil carryover after servicing, investigate the separator element, oil return circuit, valve body condition, and downstream pressure system before replacing further components.
Related Components
| Component | Function |
|---|---|
| Ingersoll Rand 22064695 | Minimum pressure check valve service kit |
| Minimum Pressure Valve Assembly | Controls separator vessel pressure and prevents reverse airflow |
| Ingersoll Rand 22099352 Valve Assembly | Associated minimum pressure valve assembly reference |
| Ingersoll Rand 54731583 Valve Assembly | Related valve assembly reference for applicable service configurations |
| Oil Separator Element | Separates entrained oil from compressed air |
| Oil Separator Vessel | Houses the separator element and maintains internal pressure |
| Oil Return Line | Carries recovered oil back to the compressor lubrication circuit |
| Compressor Oil Filter | Removes contaminants from circulating lubricant |
| Aftercooler | Cools compressed air leaving the separation stage |
| Air Receiver | Stores compressed air and supports variations in downstream demand |
Recommended Related Models
| Model / Product Reference | Product Type | Typical Application |
|---|---|---|
| Ingersoll Rand 22064695 | Minimum Pressure Check Valve Kit | Servicing compatible minimum pressure valve assemblies |
| Ingersoll Rand UP5-11 | Rotary Screw Air Compressor | Pressure valve maintenance in specified UP5 configurations |
| Ingersoll Rand UP5-15 | Rotary Screw Air Compressor | Minimum pressure valve service where the parts list specifies 22064695 |
| Ingersoll Rand UP5-18 | Rotary Screw Air Compressor | Oil separation and pressure control maintenance in compatible configurations |
| Ingersoll Rand UP5-22 | Rotary Screw Air Compressor | Minimum pressure valve servicing in applicable UP5 arrangements |
| Ingersoll Rand EW5-22 | Rotary Screw Air Compressor | Pressure valve maintenance subject to configuration verification |
| Ingersoll Rand VSD15 | Variable-Speed Rotary Screw Air Compressor | Minimum pressure valve servicing where the installed parts list matches |
| Ingersoll Rand VSD22 | Variable-Speed Rotary Screw Air Compressor | Pressure control maintenance in compatible configurations |
| Ingersoll Rand UP6-20 | Rotary Screw Air Compressor | Minimum pressure valve service in specified UP6 versions |
| Ingersoll Rand UP6-25 | Rotary Screw Air Compressor | Separator pressure control maintenance where compatible |
| Ingersoll Rand UP6-30 | Rotary Screw Air Compressor | Minimum pressure valve service subject to the installed valve reference |
Key Advantages
- Supports maintenance of the compressor’s minimum pressure and check-valve functions.
- Helps retain separator vessel pressure during startup.
- Supports the pressure conditions needed for oil circulation and separation.
- Helps prevent downstream compressed air from flowing backward after shutdown.
- Allows service of compatible valve components without automatically replacing the complete assembly.
- Provides a specific part number for maintenance identification and service records.
Technical FAQs
What does the minimum pressure check valve do during compressor startup?
It helps retain pressure inside the separator vessel until the compressor reaches the valve’s opening threshold. This supports oil circulation and the intended operation of the oil separation system before compressed air flows freely downstream.
Can a faulty minimum pressure valve cause oil carryover?
Yes. If the valve fails to maintain the required pressure conditions, oil circulation and separation performance may be affected. However, a damaged separator element, blocked oil return line, or incorrect oil level can also cause oil carryover and should be checked during diagnosis.
Which Ingersoll Rand compressors use the 22064695 kit?
The 22064695 kit is listed for selected UP5 and UP6 compressor configurations, including certain UP5-11, UP5-15, UP5-18, UP5-22, UP6-20, UP6-25, and UP6-30 models, as well as some EW5 and variable-speed versions. The installed valve assembly and compressor parts list must be checked to confirm compatibility.
When should the complete minimum pressure valve be replaced instead of servicing it with this kit?
A service kit may be suitable when the fault is limited to replaceable internal components. If the valve body, internal seating surfaces, or mounting interfaces are damaged, the kit may not restore correct operation. Inspect the complete assembly and follow the applicable service procedure before deciding between a repair and full valve replacement.