Category Archives: Membrane Filter Cartridges

TefTEC PTFE Membrane Filter Series

Absolute Rated PTFE Membrane Filter Cartridge

TefTEC cartridge filters are constructed with naturally hydrophobic PTFE membrane and polypropylene support layers and components. The HIMA retentive PTFE membrane offers superior hydrophobicity and water intrusion resistance compared to PVDF and polypropylene membranes, and the cartridge construction offers a cost-effective alternative to all fluorocarbon filters. TefTEC filters are ideal for gas/vent applications and the filtration of aggressive chemicals and solvents.

TefTEC Filter Features–Benefits

  • High surface area, single-layer construction provides superior flow rates and minimizes filtration system size
  • 100% Flushed with DI water and integrity tested
  • Meets applicable CFR criteria and USP Class VI Biological Test for Plastics
  • Filters are manufactured in an ISO Class 7 Cleanroom Environment
  • Filters are flushed, tested and packaged in a Class ISO 7 clean room
  • Manufactured using current Good Manufacturing Practices
  • Each filter element stamped with pore size, lot and serial number for identification and traceability

Applications

Aggressive chemicals • Tank Vents • Strong acids/bases • Compressed gases • Solvents • Photoresists • Pharmaceutical Intermediates • Hot DI water • Fermentation air

Graver TEFTEC Membrane filter CartridgeDownload Brochure

WaterTEC Filter Series

Absolute Rated Polyethersulfone Membrane Filter Cartridges

The WaterTEC filter series is constructed of absolute rated, hydrophilic, asymmetric polyethersulfone membrane and polypropylene components. The filter is designed for overall filtration economy and provides excellent flow rates and throughputs.

Filter Features– Benefits

  • Low pressure drop reduces energy costs  
  • High dirt holding capacity minimizes change-outs and down time  
  • All thermal bonded construction with no adhesives  
  • Available in all common configurations to allow use of existing filter housings  
  • Cost effective absolute filtration  
  • All materials are FDA listed for food and beverage contact (U.S. CFR, Title 21)  
  • Meets USP, Class VI for plastics

Typical Applications

  • General water filtration  
  • DI water prefilter  
  • DI water post filter  
  • Aqueous based chemical processing
Graver WATERTEC – Membrane filter cartridgeDownload brochure

ZTEC™- WB Polyethersulfone Membrane Cartridge Filters

Pleated Polyethersulfone (PES) Membrane for Critical Filtration in Wine and Beer

 

 ZTEC WB cartridge filters utilize a special polyethersulfone membrane to provide consistent removal of spoilage organisms and inorganic particulate. The product offers excellent retention efficiency and extended on-stream life making it an ideal filter for the clarification of beer and wine.

The PES membrane, available with either 0.65 or 0.45 μm pore sizes, is designed to meet and surpass the filtration criteria necessary to maintain product quality and characteristics. Produced in an ISO Class 7 cleanroom, the cartridges are integrity tested during production to assure performance and consistency.

Filter Features– Benefits

 

  • Manufactured in an ISO Class 7 Cleanroom Environment
  • 100% flushed with 18MΩ water and integrity tested
    Low adsorption of protein, color and flavor components
  • All materials are FDA listed for food and beverage contact
  • Repeatably Steamable/Sanitizable
    High log reduction values for spoilage organisms
  • High retention (LVR>7) of yeast and other spoilage organisms
  • Pore size, lot and serial number are stamped on each filter element for identification and traceability

 

Typical Applications

White Wine • Red Wine • Beer • Sparkling Wine • Wine/Malt Coolers • Champagne • Distilled Spirits

Filter Specifications

Media:

Asymmetric Polyethersulfone membrane

 
Inner core, end caps, cage:

 

Polypropylene

 

 

Support layers:

 

 

Spunbonded Polypropylene

 
Gaskets/O-Rings options: Buna-N, EPDM, Silicone, Viton, Teflon Encapsulated Viton (O-Rings only)
Micron ratings:

 

0.2 μm, 0.45 μm, 0.65 μm

 
Dimensions and Operating Parameters

P (DOE), P2 (226/flat), P3 (222/flat), M1 (3/4’’ male NPT), M2 (1’’ male NPT)

 
Nominal lengths:

 

9.76″ 10″ 20″ 30″ 40″
24.7, 25.4, 50.8, 76.2, 101.6 cm

 
Outside diameter:

 

2.7″
6.9 cm

 
Inside diameter:

 

2.54 cm

 
Surface Area

 

7.5 ft2 . (0.7 m 2 ) per 10 inch element

 
Maximum operating temperature:

 

80°C

 
Differential pressure:

80 psid @ 70°F (5.5 bar @ 21°C)

40 psid @ 176°F (2.8 bar @ 80°C)

 

 

Performance Specifications

Hot DI Water

Filter cartridge will withstand temperatures of 185°F (985°C) for up to 30 consecutive minutes.

Cleaning/Sanitization

Compatible with most common chemical cleaning, sanitizing and sterilizing agents and with pH range from 1–14. Consult factory for specific compatibility information.

Steam/Autoclave

Cartridges may be steamed or autoclaved for at least 50 thirty minute cycles @ 275°F (135°C).

Typical Bacterial Retention Performance

0.2μm: LRV for B diminuta ≥8  
0.45μm: LRV for S. marcescens ≥ 11 LRV for L. brevis ≥ 10  
0.65μm: LRV for S. cerevisiae ≥ 10 LRV for L. brevis ≥7  

Integrity Test Specifications

Minimum Bubble Point values and maximum Diffusive Air Flow (per 10-inch cartridge) values for ZTEC-B filters wet with water:

Pore Size Bubble Point Diffusive Air Flow
     
0.2 μm: ≥ 38psig (2.6 bar) ≤ 35cc/min @ 30psig (2.1 bar)
0.45 μm: ≥ 25psig (1.7 bar) ≤ 35cc/min @ 20psig (1.4 bar)
0.65 μm: ≥ 18psig (1.2 bar) ≤ 35cc/min @ 15psig (1.0 bar)

FDA Listed Materials

All materials comply with FDA title 21 of the Code ofFederal Regulations Sections 174.5, as applicable for foodand beverage contact.

Graver ZTEC-WB – Membrane Filter CartridgeDownload brochure
Graver Technologies logo

Graver Technologies Filtration specialists

Germ Africa distribute the renowned Graver Technologies range of filtration media, Ion Exchange Resins and adsorbents.

In the 1880’s Graver was part of Union Tank Carbide, which Supplied water treatment for pressure steam boilers.

Graver then became central to the supply of water treatment equipment to power generation and chemical processing industries.

The Graver Chemical Company which had become a Supplier of Ion Exchange resins, adsorbents and condensate filters was then established.

And finally Graver Technologies came along with a name change in 1998 with expansion into filtration and separation technologies.

The headquarters are now located in Delaware, USA, and Graver Technologies has become one of the world’s largest manufacturers of filtration products.

Graver Technologies quality systems are ISO 9001:2000 compliant, and their membrane filters are flushed, tested and packaged in a Class ISO 7 clean room, they have a suitable filter cartridge for almost any liquid or compressed gas filtration application.

The Graver Range includes a wide variety of filter cartridges in the following formats.

Graver Technologies is one of the fastest growing filtration companies in the world and continues to server its clients with quality products at affordable prices.

Filter Cartridges

Filtration and Particle removal

Filtration

The Filtration Division of Germ Africa offer a wide range of locally manufactured and imported filtration related products including:

Our fields of expertise extend to the following areas where we can help you achieve your aims.

  • Water Purification

–Ion exchange resins and back washable filters for condensate polishing and ultra pure water applications

  • Trace Contaminant Reduction

–Adsorbent media for removing organic, inorganic and heavy metal impurities from industrial and aqueous fluids

  • Process Filtration

–Liquid, air and gas filters and cross flow membranes for clarification of industrial and critical process streams

Our exclusive range of imported filter cartridges are supplied by Graver Technologies of the USA.

Whilst we manufacture as well as import a range of filter bags from FSI/PALL, these bags are primarily used in the automotive sector due to their speciality in nature.

Our South African manufactured filtration range of products are marketed under the brand name Flowrite, we manufacture yarn wound filter cartridges as well as resin bonded filter cartridges.

The products supplied and supported by the Filtration Division are primarily geared towards the filtration of liquids and compressed gasses. These products are typically reticulated in piping systems from 15mm diameter upwards, and at pressures from 20 bar down, and the product range of the Division reflects this.

Our Mission in the filtration division is:

–To provide value-added products and innovative technological solutions for process filter markets.

Vision

–To be a leading provider of liquid process filters in our served markets.

–To be a preferred partner of our customers by providing high quality products and outstanding service.

–To grow profitably, thereby increasing customer loyalty and stakeholder value.

However, special-duty products can be designed for almost any application.

The Filtration Division products are currently providing reliable, efficient and low-cost service in many industries, including:

  • Pulp & Paper
  • Auto-Manufacturing
  • Petro-Chemical
  • Food & Beverage
  • Paints & Coatings
  • Domestic Water
  • Power Generation
  • Steel Mills
  • Wines & Spirits