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Product Overview

The Ingersoll Rand 47704434001 47569978001 Gasket Pre-Filter is a maintenance component used in compatible industrial compressor filtration systems. As part of a multi-stage filtration arrangement, the pre-filter helps capture larger contaminants before they reach downstream filtration components or protected compressor equipment.

The gasket element of the assembly is particularly important because filtration performance depends not only on the filter media but also on correct sealing. A poorly seated gasket, damaged sealing surface, or incorrectly installed pre-filter can allow contaminated air to bypass the intended filtration path.

The supplied dimensions of the 47569978001 Gasket Pre-Filter are 457 × 15 × 304 mm, with a weight of 0.45 kg. Its large, relatively thin form factor makes proper positioning and sealing especially important during installation.

This component should be matched to the compressor’s actual model, filter housing, and maintenance configuration before replacement. Physical dimensions alone are not sufficient to establish compatibility.

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Product Identification

Parameter	Specification
Manufacturer	Ingersoll Rand
Main Reference	47704434001
Component Part Number	47569978001
Product Type	Gasket Pre-Filter
Primary Function	Pre-Filtration and Sealing
Application	Industrial Compressor Filtration
Dimensions	457 × 15 × 304 mm
Weight	0.45 kg
Installation Location	Compatible Filter Assembly
Maintenance Type	Preventive / Corrective Maintenance
Typical Equipment	Industrial Air Compressor Systems

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Technical Specifications

Technical Item	Specification
Brand	Ingersoll Rand
Reference	47704434001
Part Number	47569978001
Component Category	Gasket Pre-Filter
Filtration Stage	Pre-Filtration
Sealing Function	Helps Prevent Air Bypass
Dimensions	457 × 15 × 304 mm
Weight	0.45 kg
Application	Compressor Filtration System
Installation	Filter Housing / Pre-Filter Assembly
Maintenance Purpose	Restore Filtration and Sealing Performance

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What Is a Gasket Pre-Filter?

A pre-filter is normally positioned upstream of a primary or finer filtration stage. Its purpose is to intercept larger contaminants before they reach downstream filter media.

A simplified filtration arrangement is:

Ambient Air

↓

47569978001 Gasket Pre-Filter

↓

Primary Filter

↓

Compressor Intake / Protected Equipment

↓

Compressor Air End

The gasket portion also contributes to the sealing interface. The exact arrangement depends on the specific filter housing and compressor configuration.

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Main Functions

Pre-Filtration

The pre-filter helps remove larger airborne particles before they reach the main filtration stage.

This can reduce the contamination load on downstream filter media.

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Sealing

The gasket component helps maintain a controlled air path through the filter assembly.

Effective sealing prevents:

• Air bypass
• Unfiltered-air leakage
• Dust migration
• Loss of filtration efficiency

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Protection of Downstream Components

By intercepting contaminants upstream, the pre-filter can help reduce contamination entering downstream components.

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Why Pre-Filter Maintenance Matters

A pre-filter operates continuously when the associated compressor or filtration system is running. Over time it can accumulate:

• Dust
• Dirt
• Industrial particles
• Fibers
• Environmental debris

As contamination increases, airflow resistance can rise.

At the same time, deterioration of the gasket can cause leakage around the filter rather than through the filtration media.

Both conditions can negatively affect system performance.

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Typical Applications

The 47569978001 Gasket Pre-Filter can be incorporated into maintenance activities for compatible Ingersoll Rand compressor systems.

Potential industrial environments include:

• Manufacturing plants
• Automotive factories
• Chemical processing
• Food and beverage production
• Pharmaceutical facilities
• Power plants
• Water treatment facilities
• Mining operations
• Industrial workshops
• Process automation facilities

The actual application depends on the compressor and filtration assembly.

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Installation Guide

1. Confirm Compatibility

Before beginning maintenance, verify:

• Compressor model
• Compressor serial number
• Filter assembly
• Existing pre-filter
• Main reference 47704434001
• Part number 47569978001

Do not rely solely on physical dimensions when selecting a replacement component.

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2. Shut Down the Compressor

Before opening the filtration assembly:

1. Stop the compressor.
2. Disconnect or isolate electrical power.
3. Prevent accidental startup.
4. Release stored pressure where applicable.
5. Allow hot components to cool.
6. Follow plant lockout/tagout procedures.

Never service a pressurized filter assembly.

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3. Locate the Pre-Filter Assembly

Identify the filter housing or intake assembly containing the pre-filter.

Inspect the surrounding area for:

• Dust
• Oil
• Dirt
• Loose hardware
• Damaged seals
• Air leakage

Clean the exterior before opening the housing.

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4. Remove the Existing Pre-Filter

Open the filter assembly according to the applicable compressor maintenance procedure.

Carefully remove the old pre-filter.

Prevent accumulated contaminants from falling into the downstream intake passage.

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5. Inspect the Housing

Check the housing for:

• Cracks
• Corrosion
• Deformation
• Dirt accumulation
• Damaged sealing surfaces
• Loose fasteners

A damaged housing may prevent the new gasket from sealing correctly.

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6. Clean the Sealing Surface

Before installing the replacement component:

• Remove dust.
• Remove old gasket residue where applicable.
• Clean the contact surface.
• Check for scratches or deformation.

The sealing surface should be clean and free from foreign material.

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7. Inspect the New Pre-Filter

Before installation, inspect the 47569978001 component for:

• Tears
• Cracks
• Deformation
• Contamination
• Damaged edges
• Manufacturing damage

Do not install a damaged component.

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8. Confirm Orientation

Compare the replacement component with the original assembly.

Verify:

• Correct orientation
• Correct seating position
• Correct gasket location
• Proper alignment with the housing

A large gasket-style component can appear correctly installed while still being misaligned around part of the housing.

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9. Install the Pre-Filter

Carefully position the component in the filter assembly.

Make sure the gasket is:

• Fully seated
• Evenly positioned
• Not twisted
• Not folded
• Not pinched
• Not displaced

Do not use excessive force to push the component into position.

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10. Reassemble the Housing

Close the filter assembly and reinstall all required hardware.

Check:

• Cover alignment
• Fasteners
• Clamps
• Sealing surfaces
• Filter seating

Tighten hardware according to the applicable equipment maintenance procedure.

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11. Restore the Compressor

After confirming correct installation:

1. Remove tools and foreign objects.
2. Restore the filter assembly.
3. Restore electrical power.
4. Start the compressor.
5. Allow the compressor to reach normal operating conditions.
6. Monitor the filtration system.

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12. Check for Air Bypass

During initial operation, inspect the filter assembly for signs of leakage.

Look for:

• Air leakage
• Abnormal vibration
• Dust movement
• Unusual noise
• Pressure abnormalities

A damaged or incorrectly seated gasket may allow air to bypass the filtration media.

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Commissioning Verification

After installation, verify the following.

Filter Seating

Confirm that the pre-filter remains correctly positioned after the compressor reaches operating conditions.

Airflow

Check for normal intake airflow.

Differential Pressure

Where monitoring is available, check the pressure differential across the filtration system.

Leakage

Inspect the gasket interface for bypass leakage.

Compressor Performance

Monitor:

• Operating pressure
• Temperature
• Motor current
• Load/unload behavior

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Troubleshooting Guide

Air Filter System Has High Pressure Drop

Possible causes include:

• Contaminated pre-filter
• Blocked primary filter
• Incorrect pre-filter installation
• Restricted intake path
• Excessive environmental contamination

Inspect the complete filtration system rather than replacing only the pre-filter.

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Air Bypasses the Pre-Filter

Possible causes:

• Gasket incorrectly positioned
• Damaged gasket
• Uneven seating
• Damaged housing
• Deformed sealing surface

Inspect the entire gasket interface.

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Dust Appears Downstream

Possible causes include:

• Pre-filter damage
• Gasket leakage
• Incorrect installation
• Filter housing bypass
• Damaged primary filter

Check both filtration stages.

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Compressor Has Reduced Airflow

Potential causes include:

• Dirty pre-filter
• Blocked primary filter
• Intake restriction
• Incorrect gasket installation
• Damaged filter housing

Compare the differential pressure before and after maintenance when possible.

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Compressor Overheats

Possible causes include:

• Restricted intake airflow
• Excessive filter pressure drop
• Dirty cooling system
• High ambient temperature
• Poor ventilation
• Compressor overload

The pre-filter should be inspected as part of the complete airflow investigation.

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Gasket Is Damaged During Installation

Possible causes:

• Excessive force
• Misalignment
• Sharp housing edges
• Incorrect installation technique
• Incorrect component

Do not continue operating with a visibly damaged sealing component.

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Gasket Becomes Deformed

Possible causes:

• Improper storage
• Incorrect installation
• Excessive compression
• Incorrect housing alignment
• Component mismatch

Verify the installation arrangement before restarting the equipment.

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Filter Becomes Contaminated Quickly

Rapid contamination may result from:

• High dust levels
• Dirty compressor room
• Construction activity
• Poor environmental control
• Upstream filtration problems

Investigate the operating environment if replacement intervals become unusually short.

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Abnormal Noise After Installation

Possible causes:

• Loose housing
• Gasket vibration
• Improper seating
• Air leakage
• Filter assembly damage

Stop the compressor if abnormal noise indicates possible mechanical damage.

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Preventive Maintenance

Routine Inspection

Inspect the filtration assembly for:

• Dust accumulation
• Gasket condition
• Filter loading
• Air leakage
• Housing damage

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Differential Pressure Monitoring

If the system provides differential-pressure monitoring, record values during normal operation.

A rising pressure differential may indicate progressive filter loading.

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Gasket Inspection

Look for:

• Cracks
• Hardening
• Flattening
• Tears
• Deformation
• Loss of elasticity

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Environmental Inspection

Evaluate the compressor-room environment for:

• Dust
• Smoke
• Fibers
• Moisture
• Chemical contamination

Harsh environments can accelerate filter and gasket deterioration.

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Replacement Checklist

Inspection Item	Verification
Compressor Model	Confirmed
Serial Number	Confirmed
Main Reference	47704434001
Component Number	47569978001
Dimensions	457 × 15 × 304 mm
Weight	0.45 kg
Compressor Isolated	Completed
Pressure Released	Completed
Existing Pre-Filter Removed	Completed
Housing Inspected	Completed
Sealing Surface Cleaned	Completed
Replacement Component Inspected	Completed
Orientation Verified	Completed
Gasket Correctly Seated	Completed
Housing Reassembled	Completed
Leakage Checked	Completed
Differential Pressure Checked	Completed
Compressor Performance Verified	Completed

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Related Compressor Components

The pre-filter normally works together with several other compressor components.

Component	Typical Function
Air Filter	Removes Airborne Contaminants
Pre-Filter	Captures Larger Contaminants
Filter Housing	Supports Filtration Elements
Intake Valve	Controls Compressor Intake
Air-Oil Separator	Separates Oil From Compressed Air
Oil Filter	Filters Compressor Oil
Minimum Pressure Valve	Maintains Minimum System Pressure
Temperature Control Valve	Regulates Oil Temperature
Compressor Air End	Compresses Incoming Air

Actual component compatibility depends on the compressor configuration.

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Key Advantages

Supports Multi-Stage Filtration

The pre-filter can reduce the contamination burden placed on downstream filtration components.

Helps Prevent Air Bypass

The gasket function supports proper sealing between the filter assembly and housing.

Protects Downstream Equipment

Effective pre-filtration helps reduce the amount of larger particulate contamination entering the downstream filtration system.

Supports Stable Airflow

A clean and correctly installed pre-filter helps maintain the intended intake airflow.

Suitable for Maintenance Programs

The component can be maintained or replaced as part of scheduled compressor filtration service.

Compact Maintenance Component

The supplied dimensions are 457 × 15 × 304 mm, with a weight of 0.45 kg, making it suitable for planned maintenance inventory.

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Frequently Asked Questions

What is Ingersoll Rand 47569978001?

It is a Gasket Pre-Filter associated with the supplied 47704434001 reference for compatible Ingersoll Rand compressor filtration equipment.

What are the dimensions?

The supplied dimensions are:

457 × 15 × 304 mm

What is the weight?

The supplied weight is:

0.45 kg

What does a pre-filter do?

A pre-filter is generally installed upstream of a primary filter to capture larger contaminants and reduce the contamination load on the downstream filtration stage.

What is the purpose of the gasket?

The gasket helps create a controlled sealing interface so that contaminated air does not bypass the intended filtration path.

What happens if the gasket is installed incorrectly?

Air may bypass the filter, allowing contaminants to enter downstream equipment and potentially reducing filtration performance.

What are signs of gasket failure?

Common indications include:

• Air leakage
• Dust downstream of the filter
• Abnormal pressure drop
• Visible gasket deformation
• Unusual intake noise

Should the filter housing be cleaned during replacement?

Yes. The sealing surfaces and surrounding housing should be inspected and cleaned before installing the replacement component.

How often should the pre-filter be replaced?

The appropriate interval depends on operating hours, environmental contamination, differential pressure, and the maintenance requirements of the specific compressor system.

Can this component be installed on any Ingersoll Rand compressor?

No. Compatibility must be confirmed against the actual compressor model, serial number, filter assembly, and applicable parts information.

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Installation Checklist

Item	Status
Correct Component Identified	✓
Compressor Isolated	✓
Pressure Released	✓
Existing Pre-Filter Removed	✓
Housing Inspected	✓
Sealing Surface Cleaned	✓
Replacement Component Inspected	✓
Correct Orientation Confirmed	✓
Gasket Properly Seated	✓
Housing Secured	✓
Air Leakage Checked	✓
Differential Pressure Checked	✓
Compressor Restarted	✓
System Performance Verified	✓

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Conclusion

The Ingersoll Rand 47704434001 47569978001 Gasket Pre-Filter is a maintenance component designed to support effective pre-filtration and sealing within compatible industrial compressor filtration systems. Its dual role in contamination control and sealing makes correct installation particularly important.

The supplied component dimensions are 457 × 15 × 304 mm, with a weight of 0.45 kg. During replacement, technicians should pay close attention to the condition of the filter housing, sealing surfaces, component orientation, and gasket seating. Even a high-quality filter element cannot provide effective protection if air is able to bypass the filtration path.

For reliable operation, maintenance should be performed with the compressor stopped, isolated, depressurized, and cooled as necessary. After installation, the system should be checked for leakage, abnormal pressure drop, airflow restrictions, and changes in compressor operating behavior.

When correctly matched to the applicable compressor configuration and properly installed, the 47569978001 Gasket Pre-Filter can help maintain clean intake airflow, reduce the contamination burden on downstream filtration, and support reliable long-term operation of compatible Ingersoll Rand compressed-air systems.