PP String Wound Depth Filter Cartridge for Industrial Water Treatment

PP String Wound Depth Filter Cartridge for Industrial Water Treatment

High-Capacity Depth Filtration for Demanding Industrial Applications

The PP String Wound Depth Filter Cartridge is engineered to deliver consistent, high-performance sediment filtration in a wide range of industrial water treatment systems. Constructed from 100% pure polypropylene yarn, this filter offers excellent chemical resistance, a wide range of micron ratings, and long service life under demanding conditions.

Its depth-wound structure allows for true depth filtration — larger particles are trapped on the outer layers, while finer particles are captured deep within the cartridge. This design ensures higher dirt-holding capacity, low pressure drop, and efficient protection for downstream equipment like pumps, RO membranes, and heat exchangers.

Quick Overview of the PP String Wound Filter Cartridge

Type: Depth Filter Cartridge

Filtration Media: 100% Polypropylene Yarn

Micron Ratings: 0.5 – 200 µm (customizable)

Length Options: 5"–70" (commonly 10", 20", 30", 40", 50", 70")

Outer Diameter: 63 mm (standard), 114–115 mm (jumbo)

Applications: Industrial process water, desalination, food, petrochemical, and more

Key Features

✅ 100% Polypropylene Construction
Pure PP yarn ensures broad chemical compatibility and no media migration.

✅ Depth Filtration Design
Progressive density structure captures particles from outer to inner layer.

✅ High Dirt-Holding Capacity
Extended service life and reduced replacement frequency.

✅ Wide Chemical Compatibility
Resists acids, alkalis, brine, and solvents; ideal for RO pre-filtration and industrial fluids.

✅ Low Extractables
No adhesives or surfactants — safe for sensitive RO systems and high-purity applications.

✅ High Customizability
Available in multiple lengths, micron ratings, and core materials (PP, SS, GI).

Specifications

Applications

✅ Industrial Water Treatment
Pre-filtration for high-volume process water and RO systems in manufacturing plants.

✅ Desalination Systems
50"–70" filters used for seawater and brackish water pre-treatment in large-scale RO units.

✅ Food & Beverage Industry
Filtration of syrups, edible oils, beverages, and process water.

✅ Chemical & Petrochemical Processing
Removes impurities from corrosive fluids to protect sensitive equipment.

✅ Power Generation
Filtration of cooling water, boiler feedwater, and condensate.

✅ Mining & Metalworking
Removes silt and solids from mine water or cutting fluids.

✅ Oil & Gas Industry
Filtration of completion fluids, injection water, and acrylates.

✅ Pulp & Paper
Clarifies process water to improve pulp purity and paper quality.

Why Choose AALfilter’s PP String Wound Depth Filters?

✅ Gradient density for true depth filtration

✅ Broad chemical compatibility with aggressive liquids

✅ High flow rates and low pressure drop

✅ Supports both standard and high-flow housings

✅ Cost-effective with long replacement cycles

✅ Available in custom sizes and micron ratings

Need Technical Support or Custom Options?

Our technical team is ready to assist with system compatibility, sizing, and application-specific solutions. Customizations in length, micron rating, end cap, or core materials are available upon request.

Explore More Depth Filtration Products

Looking for other depth filtration options? Check out our related high-performance cartridges:

Standard PP Melt Blown Sediment Filter 

Cotton String Wound filter

Big Blue Poly Spun Sediment Filter 

High Flow Filter Cartridges – For Large Volume Water Filtration »