Coalescing Filter Cross Reference | Equivalent Filter Grades by Brand
Published by Filter Element Store on Apr 10, 2026
Coalescing filter cross references can be confusing, especially when comparing different brands, grades, and filtration efficiencies.
Different manufacturers use different naming systems, efficiency ratings, and part number formats. This guide simplifies how major brands compare and helps identify equivalent filter elements based on function, not just part number.
Coalescing Filter Grade Cross Reference
Most coalescing filters fall into similar performance categories, even though each manufacturer uses different naming conventions.
| Brand | Grade | Filtration Stage | Typical Use |
|---|---|---|---|
| Balston | DX | Coarse coalescing | Bulk oil aerosol and liquid removal ahead of dryers or finer filters |
| Domnick Hunter | AO | Coarse coalescing | General purpose pre-filter stage for removing liquid oil and water |
| Parker | Grade 10 | Coarse coalescing | Prefilter for high liquid loading and upstream protection |
| Balston | BX | High efficiency coalescing | Fine oil aerosol removal for general plant air systems |
| Domnick Hunter | AA | High efficiency coalescing | High efficiency filtration downstream of pre-filters |
| Parker | Grade 6 | High efficiency coalescing | Standard high-efficiency element for compressed air systems |
| Balston | SA / AQ | Ultra-high efficiency coalescing | Very fine aerosol removal for critical or instrumentation air |
| Parker | Grade 4 | Ultra-high efficiency coalescing | Ultra-fine filtration for sensitive downstream applications |
| Domnick Hunter | AC | Oil vapor removal stage | Final filtration stage for removing oil vapor and odor |
| Balston | CI Series | Oil vapor removal stage | Activated carbon stage for hydrocarbon vapor removal |
Major Coalescing Filter Brands
Balston / Parker
Balston filters use a structured part number format based on series and grade. These elements are commonly cross-referenced to Parker Finite equivalents when available, with alternate equivalents sometimes matched through other bridge brands.
View Balston Cross Reference →
Domnick Hunter
Domnick Hunter filters use grades such as AO, AA, and ACS to define filtration performance. These grades align closely with standard coalescing and high-efficiency filter stages used across other compressed air brands.
View Domnick Hunter Cross Reference →
Parker Finite
Finite filters, also from Parker Filtration, use a more traditional grade-based approach. They are one of the clearest reference points when comparing coalescing filter performance across brands.
Ingersoll Rand
Ingersoll Rand compressed air filters use proprietary part numbers but generally follow similar staged filtration concepts for coalescing and particulate removal.
Kaeser
Kaeser filters use a staged filtration approach designed around system efficiency and air quality requirements, similar to other major compressed air manufacturers.
Sullair
Sullair filters are commonly used in industrial compressed air systems and can often be cross-referenced based on function, size, and filtration stage.
Headline
Headline is useful as a bridge brand in cross reference work, especially where direct Balston and Finite alternatives overlap. It is not the main focus of this chart, but it can be very helpful when tracking down exact size and grade equivalents.
How to Cross Reference a Coalescing Filter
- Identify the filtration stage first
- Match the physical size and dimensions
- Compare efficiency levels across brands
- Confirm compatibility with the housing and application
Need Help Cross-Referencing a Filter?
We can help match coalescing filter elements across different brands based on your application, part number, or specifications.