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Depth Filters - nominal and absolute

Depth Filters - nominal and absolute
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Depth Filters - nominal and absolute

Product catalog summary
Overview: This document provides a detailed analysis of depth filters, focusing on nominal and absolute filter cartridges offered by Technikwolf Filtersysteme. It covers materials, applications, and technical specifications.

Types of Depth Filters:
  • Nominal Filters: These are used for general impurities and turbidity removal. Examples include WPP and WBW wound cartridges made of polypropylene or cotton, and WFMB melt-blow cartridges made of polypropylene.
  • Absolute Filters: These are designed for more demanding filtration processes, ensuring higher efficiency and safety.

Filter Materials and Construction:
  • WPP Cartridges: Made from polypropylene yarn and core, suitable for aqueous mediums, acids, and fine chemicals.
  • WBW Cartridges: Cotton yarn on a stainless steel core, used for solvents and cooling water condensate.
  • WFMB Cartridges: Feature a four-layer polypropylene structure for high dirt-retention and low differential pressure.
  • WFNMB Cartridges: Nylon construction for high-temperature and high-viscosity applications.
  • CP Cartridges: Polyethylene-coated polypropylene for consistent pore structure and high flow rates.

Technical Specifications:
  • Filter Ratings: Range from 0.5 µm to 350 µm, depending on the cartridge type.
  • Temperature Tolerance: Varies by material, with polypropylene up to 90°C and nylon up to 120°C.
  • Differential Pressure: Maximum values range from 2.5 bar to 5.5 bar, depending on the filter type and temperature.

Applications:
  • Pre-filters for water treatment, fine filters for cooling circuits, process filters for acids and lyes, and filters for photo chemicals and food and beverages.

Features and Benefits:
  • High flow rates, low differential pressures, long service life, and compliance with FDA and other regulatory standards.
  • Customizable with various adapter configurations and materials.

Graphical Data:
  • Flow rate and pressure loss graphs for different filter ratings, illustrating performance characteristics.

Technical Specifications:
  • Filter Medium: Polyester, Phenolic-resin with acrylic fibers, Polypropylene
  • Filter Ration: 1-350 µm, nominal and absolute
  • Temperature: Max 121°C for phenolic-resin, 120°C for polyester, 80°C for polypropylene
  • Differential Pressure: Varies by material and temperature, max 10 bar for phenolic-resin
  • Dimensions: Various lengths from 4 7/8" to 40"

Applications:
  • Solvents, varnishes, paints, inks, hot water, fine chemicals, cosmetics, food and beverages
  • Ultrapure water, drinking water, pre- and post-filters in water-treatment plants
  • Process filters for paints, varnishes, chemicals, and more

Characteristics and Advantages:
  • High temperature and solvent durability
  • Compact filter matrix with no binding agents
  • Long service life and high flow capacity
  • Food Contact Declaration compliance

Filter Types and Configurations:
  • CPH Depth filter cartridge: Polyester, nominal
  • ProBond Depth filter cartridge: Phenolic-resin, nominal
  • WFMBA Melt-blow cartridge: Polypropylene, absolute
  • QP-Quick-Pack Filter System: Enclosed, ready-to-use unit

Order Information:
  • Various configurations available based on filter medium, length, and adapter type
  • Specific order codes provided for each filter type
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Catalog excerpts

Depth Filters - nominal and absolute-1

Depth Filters, nominal and absolute Filtersysteme A clear Business. Filtersysteme Eine klare Sache.

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Depth Filters - nominal and absolute-2

Depth Filters, nominal and absolute A wide range of filter elements made of different materials and with different retention rates and capacities can be used to remove impurities from fluids. Generally speaking, depth filter cartridges are better-suited for clarification than surface filters such as sieves, strainers and screens, which are more appropriate for classification. Depth filter cartridges, nominal Depth filter cartridges, absolute Depth filter cartridges with nominal efficiencies are used as pre-filters or to remove general impurities and turbidity. Depth filter cartridges with absolute...

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Depth Filters - nominal and absolute-3

Depth Filters, nominal Depth filters made from a continuous fibre yarn wound around the core support The filter cartridges consist of a continuous fibre yarn, which is wound around a fixed core support. This resulting yarn-structure forms the filter layer with a corresponding layer-thickness and depth-filter effect. Due to the use of various wondering techniques, different thickness of yarn and tractive force during winding, the filter cartridges can be produced with a variety of fine filter rations. Generally speaking, filter cartridges can be manufactured from all available materials in regard...

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Depth Filters - nominal and absolute-4

WPP wound cartridge, nominal flow rate in reference to 10“ (water) WBW wound cartridge, nominal flow rate in reference to 10“ (water) 20 25 30 Flow rate (l/min) 20 25 30 Flow rate (l/min) Adapter Configurations Filter ration Core material P Polypropylene Filter length Special lengths per request Surface (Wounding of cartridge) Core extended

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Depth Filters - nominal and absolute-5

Depth Filters, nominal Depth filter with 4 filter layers made entirely of polypropylene The WFMB melt-blow cartridge is manufactured in the melt-blow process where-by four different spray nozzles are used to combine fine and coarse continuous fibers to form a multilayer structure. The fine layers are situated on the inside of the depth filter structure; the coarse layers on the outside. Due to this four-level gradiation coarse particles are retained in the outer layers and finer particles in the inner layers. This construction ensures a long service life, high dirtretention capacity and low differential...

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Depth Filters - nominal and absolute-6

Flow rate Values in reference to 10“ element 14 16 Flow rate (L/min.) Adapter Configuration Sealing compound Dirt retention with testing dust (coarse)

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Depth Filters - nominal and absolute-7

Depth Filters, nominal Depth filter cartridge made entirely of nylon The WFNMB nylon melt-blow cartridge has a very stable filter matrix and is manufactured in the meltblow process. The WFNMB is built up with a step-like configuration of decreasing pore-structure from the outside to the inside and contains a nylon core support. This assures the stability of the WFNMB in very high temperatures as well as in mediums with a high viscosity. The special chemical resistance of nylon in particular allows its use for solvents, paints and varnishes. The WFNMB nylon melt-blow cartridge can be delivered...

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Depth Filters - nominal and absolute-8

Flow rate Values in reference to 10“ (water) Flow rate (l/min) Efficiency (%) filter cartridge particle size Adapter Configurations Order information WFNMB Sealing compound 005: WFNMB: Nylon Melt-blow cartridge

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Depth Filters - nominal and absolute-9

Depth filter, nominal Depth filter cartridges with a constant perforation structure made of PE-coated PP fiber The CP Depth filter cartridge consists of 100 % polyethylene-coated polypropylene fiber soldered together at their cross points. The attained ultrapure and exceptionally compact filter matrix assures a repetitious accuracy of filtration characteristics for top quality applications. The CP Depth filter cartridge is a typical classification cartridge with a consistent pore-structure and filter ration from the outside to the inside. In addition the depth filter structure assures a high...

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Depth Filters - nominal and absolute-10

Flow rate 40 50 Flow rate (l/min.) Flow rate 40 50 Flow rate (l/min.) Adapter Configurations Sealing compound PE Flat seal (gasket)

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Depth Filters - nominal and absolute-11

Depth filter, nominal Depth filter made of polyester The CPH Depth filter cartridge consists of 100 % polyester fibres, therefore retaining an excellent chemical resistance to solvents. The thermal durability ranges to 120 ˚C. The CPH Depth filter cartridge is equipped with an ultrapure and exceptionally compact filter matrix and guarantees repeatable filter characteristics for high quality applications. CPH Depth filter cartridges can also be delivered with an adapter and end caps made of polyester Code 3, Code 8 and Code 7. Additional outstanding CHP Depth filter cartridge characteristics are...

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Depth Filters - nominal and absolute-12

Flow rate 40 50 Flow rate (l/min.) Adapter Configurations Sealing compound

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Depth Filters - nominal and absolute-13

Depth filter, nominal Depth filters made of phenolic-resin with acrylic fibers The ProBond Depth filter cartridge with a nominal filtration rate has a two-stage construction. An outer, spiral-form filter-layer, serves as a pre-filter. The inner, finer filter layer define the actual filter ration. Due to the use of long, phenolic-resin impregnated acrylic fibers the ProBond possesses a stable filter structure and permits construction without a core support. ProBond Depth filter cartridges contain no silicon and are therefore especially suited for simple filtration uses or pre-filter applications...

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Depth Filters - nominal and absolute-14

Flow rate (l/min.) ProBond phenolicresin cartridge

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Depth Filters - nominal and absolute-15

Depth filter, absolute Absolute depth filter with perforated surface made entirely of polypropylene The WFMBA Depth filter with absolute filtration rate is produced in the meltblow process. The perforated surface offers an enlarged filter surface area as well as a better binding for the continuous fibers on the filter surface. The filter is structured with a consistent pore-structure which decreases towards the middle, allowing a construction without a core support in the centre. The WFMBA melt-blow cartridge can be delivered optionally with open ends on both sides or with standard adapter constructions....

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Depth Filters - nominal and absolute-16

Dirt-retention with testing dust (coarse) Flow rate Values in reference to 10“ element Flow rate (l/min) Values in reference to 10“ element Efficiency (%) Filter cartridge Adapter Configurations Order information WFMBA- Sealing compound A: PE-Flat seal (gasket) WFMBA Melt-blow cartridge

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.