Introduction

Pleated filter cartridges are among the most common and efficient designs used in liquid and gas filtration. These cartridges incorporate pleated membrane or media layers arranged in a cylindrical form, significantly increasing filtration area and extending service life while maintaining compact size and consistent performance.

Structure Overview

• Core: A rigid support tube (typically polypropylene or stainless steel) providing mechanical stability.
• Filtration layer: Pleated membrane or depth media made of PES, PP, PTFE, PVDF, Nylon, or microfiber glass.
• Outer support layer: Protects the pleated structure from deformation and provides flow uniformity.
• End caps and sealing: Thermally welded or bonded, ensuring complete integrity and leak-free design.

Working Principle

Liquid or gas flows from the outer surface to the inner core through the pleated filtration media. Particles, microorganisms, or contaminants are captured on or within the membrane depending on pore size and filtration type (surface or depth filtration).

Uses and Advantages

1. Highly increased filtration area per unit volume due to pleated geometry.
2. Extended lifespan and reduced filtration cost over time.
3. Versatile — compatible with a wide variety of filter media materials.
4. Available in multiple micron ratings for coarse, fine, or sterilizing filtration.
5. Designed for easy installation in standard housings and systems.

Application Industries

• Pharmaceuticals — sterile filtration of liquids and gases, buffer solutions, and injectables.
• Food & Beverage — clarification of syrup, beer, dairy products, and water.
• Microelectronics — ultrapure water and chemical filtration in semiconductor manufacturing.
• Chemical processing — removal of suspended solids and impurities from process streams.
• Environmental and water treatment — final filtration and polishing applications.

Key Features

1. High surface area design with uniform pleats for maximum flow and efficiency.
2. Stable mechanical strength and low differential pressure.
3. Available in multiple end cap configurations (DOE, SOE, 222/226 fittings).
4. Made from various membrane materials to suit chemical and thermal requirements.
5. Supports sterilization methods such as autoclaving, steam, or gamma radiation.

Conclusion

Pleated filter cartridges represent an optimized, high-efficiency approach to modern filtration. Their modular design, broad compatibility, and long service life make them a fundamental component in pharmaceutical, food, water treatment, and industrial filtration systems.

Purchase Suggestion

Contact our engineering team for tailored pleated filter cartridge solutions that match your membrane material, micron rating, and system specifications.