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Download:Description
Maintaining a specified level of fluid cleanliness is critical to the operation and reliability of aerospace fluid systems and equipment. Ultipleat filter elements feature a laid-over pleat geometry which offers improved performance and a reduction in filtration costs.
The pleats of Ultipleat filter elements are designed to support each other along the entire length of the pleat. The total flow resistance is similar, regardless of where along the pleat the flow passes through the medium. This creates a uniform flow velocity through the filter element and, therefore, uniform build-up of dirt within the filtration medium. The result is greater dirt-holding capacity and longer filter element service life.
Features
- Laid over pleat geometry; significantly increased area and uniform flow distribution (compared to traditional fan pleat)
- High-strength construction
- Size reduction (optional)
Benefits
- Extended filter element service life (same space envelope) or
- Smaller space envelope and reduced weight
- Consistent performance throughout filter element service life
- Reduced filter element and assembly weight with similar service life and efficiency
How Does it Work?
Uniform Flow Distribution
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Conventional pleated filter element construction, showing Non-uniform flow distribution in a traditional fan-pleat filter. |
Ultipleat filter element construction showing uniform flow distribution. |
The pleats of Ultipleat filter elements are designed to support each other along the entire length of the pleat. The total flow resistance is similar, regardless of where along the pleat the flow passes through the medium. This creates a uniform flow velocity through the filter element and, therefore, uniform build-up of dirt within the filtration medium. The result is greater dirt-holding capacity and longer filter element service life.
Longer Service Life or Finer Filtration...Your Choice
The increased filtration area due to the laid-over pleat construction combined with the uniform flow distribution leads to a significant improvement in filter element service life when compared to a fan pleat construction in the same space envelope. Alternatively, customers can choose to have a finer filter and still obtain the same filter element service life as a fan-pleat design in the same space envelope.Service Life of Fan-Pleat vs. Ultipleat Filter Elements

Filter Element Service Life
This figure illustrates how an Ultipleat Filter element can achieve longer service life compared to fan-pleat fiter element with a similar envelope.

Filter Element Service Life
This figure illustrates how an Ultipleat filter element with a finer micron rating can achieve equivalent service life compared to a fan-pleat filter element with a similar envelope.
Applications
- Engine Lube Systems
- Engine Fuel Systems
- Hydraulic Systems
- Radar Cooling Systems
- Helicopter Transmission and Lube Systems
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To determine if your application is suitable, contact your local Pall sales representative.
Type
Filter Cartridges
Ordering Information
Each product is designed specifically for each aerospace application. For ordering information, contactyour local Pall Aerospace sales representative.
For part numbers beginning “AC” or “AD” contact Pall Aeropower Corp (USA).
Typical Part Numbers
For availability of specific part numbers beginning “QA0****” please contact Pall Aerospace Ltd (UK).For part numbers beginning “AC” or “AD” contact Pall Aeropower Corp (USA).
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