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Interface Devices 12604 - Coalescent Filter Element

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The Interface Devices 12604 Coalescent Filter Element is a high-efficiency replacement filter designed to remove oil, water, and fine particulate contaminants from gas streams in nitrogen and oxygen booster systems. This coalescing filter element helps ensure clean, dry gas, protecting critical components and supporting reliable booster performance.

General Information
Part #12604
ManufacturerInterface Devices
Shipping Information
Product Weight0.15 lbs.
Product Dimensions5 x 3 x 2 in.
Schedule B8421290065
ECCNEAR99

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AIRCRAFT COMPATIBILITY

Compatible Aircraft*
*This list is for general reference only and may not be entirely accurate for all aircraft. Please confirm all equipment meets the requirements of your aircraft with the owners/maintenance manuals prior to purchasing or using with your aircraft.

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QUESTIONS & ANSWERS

Question:
What is the Interface Devices 12604 Coalescent Filter Element used for?
Answer:

The 12604 coalescent filter element is used to remove contaminants such as oil, water, and particulates from gas streams in booster systems. It helps ensure clean and dry gas enters or exits the system. This is critical for maintaining performance and preventing damage to sensitive components. It is commonly used in nitrogen and oxygen booster applications.

Asked March 20, 2026
Question:
How does a coalescent filter element work?
Answer:

A coalescent filter element works by forcing gas through a dense filtration medium that captures fine droplets and particles. Small liquid aerosols combine into larger droplets as they pass through the filter. These larger droplets then separate and drain away from the gas stream. This process results in cleaner, drier gas output.

Asked March 20, 2026
Question:
What types of contaminants does the 12604 filter remove?
Answer:

The 12604 coalescent filter removes oil aerosols, water vapor, and fine solid particles such as dust and debris. It acts as both a liquid separator and a particulate filter. This dual-function filtration helps protect booster components from wear and contamination. Clean gas improves overall system reliability.

Asked March 20, 2026
Question:
Why is a coalescent filter important in a gas booster system?
Answer:

A coalescent filter is essential for protecting the booster from contamination and moisture. Contaminants can cause corrosion, reduce efficiency, and damage internal components. By removing these impurities, the filter helps extend equipment life. It also supports consistent and safe system operation.

Asked March 20, 2026
Question:
Where is the coalescent filter element typically installed?
Answer:

Coalescent filter elements are typically installed at the inlet or outlet of a gas booster system. At the inlet, they protect the booster from incoming contaminants. At the outlet, they ensure the delivered gas is clean and dry. Proper placement depends on the system design and application.

Asked March 20, 2026
Question:
What level of filtration does a coalescent filter provide?
Answer:

Coalescent filters are designed for high-efficiency filtration, often removing contaminants down to sub-micron levels. This allows them to capture very fine particles and liquid aerosols. High filtration efficiency is important for sensitive aviation and industrial systems. It helps maintain optimal system performance.

Asked March 20, 2026
Question:
How does the 12604 filter improve booster performance?
Answer:

By removing contaminants, the 12604 filter helps maintain smooth and efficient booster operation. Clean gas reduces wear on internal components and minimizes the risk of system failure. This leads to more consistent pressure output and improved reliability. It also helps reduce maintenance requirements.

Asked March 20, 2026
Question:
How often should the coalescent filter element be replaced?
Answer:

Replacement intervals depend on operating conditions and contamination levels. Systems exposed to higher moisture or particulate levels may require more frequent replacement. Regular inspection is recommended to ensure optimal performance. Replacing the filter as needed helps maintain system efficiency and safety.

Asked March 20, 2026
Question:
Can the 12604 coalescent filter element help reduce maintenance costs?
Answer:

Yes, by preventing contaminants from entering the system, the filter reduces wear and potential damage. This helps lower maintenance and repair costs over time. Cleaner operation also reduces downtime. It is a cost-effective way to protect critical equipment.

Asked March 20, 2026
Question:
Is the 12604 filter suitable for both nitrogen and oxygen booster systems?
Answer:

The 12604 coalescent filter element is suitable for use in gas booster systems that require clean, dry gas. It can be used in nitrogen and oxygen applications when properly specified. Ensuring compatibility with the system is important for safe operation. Always follow manufacturer guidelines when selecting replacement components.

Asked March 20, 2026