Condensate Polishing Septa & Specialty
Electric generating station condensate must be maintained at a very high purity level to protect boilers, steam generators, reactors, and turbines from corrosion. To remove contaminants from the condensate, deep bed ion exchange condensate polishers are used and sometimes preceded by a Powdex® filter demineralizer or a fine particulate filtration system. A Powdex system can also stand alone as the primary polisher.
Graver Technologies is the most experienced and knowledgeable Ion Exchange product and Filter Septum manufacturer and offers the most complete range of products to meet today’s challenges. Whether the need is for high purity Gravex® condensate polishing ion exchange resins; the original Aegis® wound, DualGuard® or AFA® pleated filter septa; or the Powdex & Ecodex® families of premium resins, the original and most widely used powdered ion exchange resins, Graver Technologies has the answer for your application.
- Aegis precoatable filter septa for Powdex filter demineralizers
- AFA, the first backwashable pleated filters installed in a condensate pre-filter system
- DualGuard, combination pleated filter with a precoatable and easily backwashable surface
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TurboGuard® Pre-Filters
TurboGuard® High Flow Filters will provide superior CRUD removal upstream of deep bed demineralizers.
- Flow is from the inside core to the outer pleats
- TurboGuard Filters are wrapped in a onepiece extruded outer cage preventing both media migration during inside out flow, and tearing during removal
- Onepiece molded end caps, including moldedin bail for secure handling during installation and removal
- Thermally bonded construction and low pressure drop at specified flow rates
- Maximum Flow Rates (lower flow rates will affect performance)
- 20” Element up to 175 gpm (663 lpm)
- 40” Element up to 350 gpm (1,325 lpm)
- 60” Element up to 500 gpm (1,893 lpm)
- A complete line of ASME Code Section VIII Division 1 Housings are available
- Optimized media surface area allows the full use of installed media area — not blocked off by media “squeezing”
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DualGuard® Polishing Septa
Graver Aegis® DualGuard® Septa are innovative two-phase backwashable filters that reduce dissolved ion contaminants and particulates.
- The optimum precoat surface allows for the distribution and sustainability of an evenly thin layer precoat for optimum performance
- High surface area of pleated media
- Pleated media available in 1 micron to 25 micron pore sizes to meet the specific filtration requirements
- Septa can be precoated when needed, or operated in a naked filtration mode as required by a system’s specific operating requirements
- Improved backwash ability
- Low pressure drop
- Unique high purity gaskets will not cause chemistry excursions
- Rugged construction made for intended service
DualGuard® 2 Pleated Septa
Learn about Graver Technologies' DualGuard® Pleated Septa, unique two-phase backwashable filters that facilitate both dissolved ion contaminant and particulate reduction.
- The optimum precoat surface allows for the distribution and sustainabilityof an evenly thin layer precoat for optimum performance
- High surface area of pleated media
- Pleated media available in 1 micron to 25 micron pore sizes to meet thespecific filtration requirements
- Septa can be precoated when needed, or operated in a naked filtrationmode as required by a system’s specific operating requirements
- Improved backwash ability
- Low pressure drop
- Unique high purity gaskets will not cause chemistry excursions
- Rugged construction made for intended service
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Aegis® Wound Precoat Septa with Stainless Steel Core
Graver Technologies' Aegis® Precision Wound Septa for condensate systems have a long service life and are pre-washed to remove contaminants for faster startup.
- Specially designed polypropylene yarn selected for condensate system use
- All yarn is prewashed to remove contaminants and TOC, resulting in faster rinse up and startup
- Innovative asymmetric pore design facilitates maximum backwash strength to pass through the septa to the outer surface and provide optimal resin and crud removal
- Surface preparation of the yarn to optimize precoat resin holding ability
- Uniform pressure drop maintained along the entire length of the septa guarantees even precoats
- Designed and “matched” to Graver Technologies Powdex® and Ecodex® resins
- The only septa manufactured by the same company that manufactures the powdered resins assures good working compatibility between the two components
- A long history exceeding 6 - 10 years service life
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Aegis® PowerGuard® Stainless Steel Septa & Underdrains
Graver's PowerGuard® with Poroplate® is the solution for problematic wedge wire.
- Absolute micron rating from 1 to 350µm
- Removal efficiency rated at 99.9%
- Lower differential pressure
- High dirt holding capacity
- Fixed pore construction eliminates dirt unloading
- Increased throughput
- Direct replacements for old OEM installed Hub and Lateral or under drain systems
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Aegis® PowerGuard® Septa & Strainers
Aegis® PowerGuard Septa offers low pressure drop, high strength, excellent corrosion resistance, and collapse strengths over 400 PSID.
- Absolute micron rating from 1 to 350µm
- Removal efficiency rated at 99.9%
- Lower differential pressure
- High dirt holding capacity
- Fixed pore construction eliminates dirt unloading
- Increased throughput
- Direct replacements for old OEM installed Hub and Lateral or under drain systems
Aegis® AFA® Pleated Septa
Graver’s AFA non-precoatable backwashable condensate polishing septa are engineered to meet the high demands in the utility industry for iron oxide removal and backwashing.
- Absolute micron rating from 1 to 25 µm
- Removal efficiency rated at 99.9%
- High surface area of pleated media
- High dirt holding capacity
- Backwashable media recipe
- Fixed pore construction eliminates dirt unloading as differential pressure increases
- Pleat optimization for extended runs between backwashings
Products
ZTEC™ P Series
ZTEC™ P Sterilizing Grade membrane cartridges are validated for complete bacterial retention to yield product sterility in biopharmaceutical final filtration applications.
- Manufactured in an ISO Class 7 Cleanroom Environment
- 100% flushed with ultrapure DI water
- Meets ASTM Standards for Sterility
- Repeatably Steamable/Sanitizable
- 100% Integrity tested prior to release
- Pore size, lot and serial number are stamped on each filter element for identification and traceability
- Complete validation guide available
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QSL™ Filter Series
The QSL™ cartridge has a polypropylene microfiber media over a polyethersulfone membrane. It's design offers excellent retention characteristics and extended life.
- Serial layered design — enhances capacity and simplifies prefiltration requirements
- Absolute rated (99.98%) — an ideal prefilter to 0.2, 0.45 and 0.65 micron membrane filters
- Fixed pore construction — resists dirt unloading at maximum differential pressure
- High surface area — high flow rate, and long service life — minimize maintenance cost
- Available with various gasket/Oring materials — compatible with many fluids
QCR™ Series
An absolute rated filter designed to meet or exceed the minimum log reduction credit of >3.0 for cysts.
- Constructed of polypropylene or polypropylene and polyethersulfone — compatible with most fluids
- Double ORing style ends for the highest seal integrity
- 7.0 ft2 (0.65 m2) of effective filter area
- Various ORing materials and configurations — easily retrofits most systems
- High surface area — high flow rates and long online service
ZTEC™ WB Series
ZTEC™ WB cartridge filters use PES membrane to remove spoilage organisms and inorganic particulate to protect beverages.
- Manufactured in an ISO Class 7 Cleanroom Environment
- 100% flushed with ultrapure DI water and integrity tested
- Low adsorption of protein, color and flavor components
- Steamable/sanitizable for cleaning and reuse
- High log reduction values for spoilage organisms
- PES membrane provides high capacity contaminant loading
- Complete qualification guide available
- Quick wet treatment available
ZTEC™ G Series
This pleated, disposable filter element is constructed of absolute rated, hydrophilic, asymmetric polyethersulfone membrane with extended filter area.
- 7.0 ft2 (0.65 m2) of membrane surface area per 10" element — High throughput, longer online service reduces costly maintenance time
- Absolute rated membrane from 0.1 to 0.65 μm
- Manufactured in an ISO Class 7 cleanroom environment
- 100% flushed with 18 MΩ cm DI water and gross integrity tested
- Fixed pore construction eliminates dirt unloading as differential pressure increases
- Low extractables
ZTEC™ E Series
The ZTEC™ E microelectronics grade cartridges by Graver are designed for ultrapure water filtration, and are hydrophilic and free of added surfactants to avoid contamination of water streams.
- Manufactured, flushed, tested and packaged, in an ISO Class 7 Cleanroom Environment
- Filters are 100% flushed with 18 MΩcm DI water and integrity tested
- Resistivity rinse up to 18 MΩcm and single digit ppb TOC levels with minimal throughput
- Available in a variety of end cap/adapter configurations to fit all industry standard housings
- Pore size, lot and serial number are stamped on each filter element for identification and traceability
- Complete qualification guide available
ZTEC™ B Series
ZTEC™ B Bioburden Reduction grade membrane cartridges provide highly consistent performance for bioburden reduction and particle removal across a wide range of beverage, pharmaceutical and biological fluids.
- Manufactured in an ISO Class 7 Cleanroom Environment
- 100% flushed with ultrapure DI water and integrity tested
- Repeatably steamable/sanitizable
- High retentions up to 107/cm2 challenged for bacteria and yeast
- Pore size, lot and serial number are stamped on each filter element for identification and traceability
- Complete qualification guide available
WaterTEC™ Series
The WaterTEC™ filter series is constructed of absolute rated, hydrophilic, asymmetric polyethersulfone membrane and polypropylene components.
- Low pressure drop reduces energy costs
- High dirt holding capacity minimizes changeouts 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
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