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PROCESS FILTERS

String wound

Depth filters with precision-wound yarn for high dirt-holding capacity and reliable clarification.

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TEX

TEX string wound filters are designed for effective depth filtration with a balance of high flow rate and particle retention. It is a Nominal rated filter with a precise winding pattern and controlled graded density that result in a higher dirt holding capacity and longer service life. TEX filters deliver robust performance in pre-filtration and clarification, in protection applications across water treatment, food & beverage, and chemical industries. 

Group image of stringwound cartridges

TEX filters are manufactured using a rigid internal core wrapped with continuous yarn in a tightly controlled winding pattern that creates distinct depth filtration zones. The winding tension and graded density allow for progressive particulate capture, reducing early clogging and maintaining stable flow. A napped yarn surface increases the total filtration area, while the inclusion of an inner core cover minimizes fiber migration in critical processes. The robust design withstands differential pressures up to 5 bar at 20°C and operates reliably across a range of fluid types, making it suitable for demanding clarification and pre-filtration applications where consistent retention and long filter life are essential.

  • High Dirt-holding Performance: The depth-wound yarn structure maximizes contaminant retention, supporting long service intervals and fewer changeouts. 
  • Low Pressure Drop with Steady Throughput: Filtration design enables efficient flow even under variable process loads or when handling high particulate volumes. 
  • Precision-wound Construction: Uniform yarn layering delivers consistent particle removal and structural reliability in dynamic flow conditions. 
  • Reduced Fiber Migration: An integrated inner core cover helps prevent yarn fibers from entering the filtrate, improving downstream protection. 
  • Chemical and Thermal Adaptability: Optional core materials support compatibility with elevated temperatures and chemically aggressive process media. 
  • Reproducible Quality Control: Manufactured under QA standards with COC available for validated or regulated installations. 
  • Food and Pharma Ready: Made using FDA-compliant yarns for safe use in beverage, food, and pharmaceutical processes.
  • Wound Fiber Yarn Options: Available in polypropylene, polyester, cotton, rayon, and fiberglass depending on application and process compatibility.
  • Pharma Process Pre-filtration: Used in upstream filtration to protect membranes and reduce loading on final filters in pharmaceutical plants. 
  • Beverage and Syrup Clarification: Removes suspended solids from syrups, juices, and process water to improve clarity and taste. 
  • Chemical and Solvent Handling: Filters aggressive chemicals, cleaning agents, and industrial solvents in production lines. 
  • Marine and Offshore Water: Applied in ballast, cooling, or onboard utility water systems for pre-treatment and particle reduction. 
  • Downstream System Protection: Acts as a reliable barrier to shield sensitive membranes and equipment from particulate fouling.

Key specifications

TEX string wound filters are designed to deliver long service life, broad media compatibility, and stable performance under varied process conditions.

Specification Value
Construction material 

Wound yarn on perforated core, inner core material options. 

Inner core cover to minimize fiber migration in PP when used.

Micron ratings available  0.5 to 100 µm 
Max differential pressure  Up to 5 bar @ 20°C (media-dependent) 
Operating temperature range  Varies by fiber and core; up to 120°C (polyester/cotton) 
Regeneration/cleaning  Limited backwash possible; typically disposable 
Lengths available  5" to 60" 
Endcap configurations  DOE, 222/fin, 226/flat, others 
Traceability/testing  In-house QA with COC available on request 
Certifications  Constructed with FDA compliant materials 

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