Aegis®

Graver is the leader in precoatable and backwashable septa and filters for condensate polishing applications in power generation. Aegis® Precision Wound Septa for precoat demineralizers are available with a variety of end fitting designs to fit the different OEM supplied systems. Graver’s backwashable cartridge septa, AEGIS® DualGuard® and AFA® pleated polypropylene are designed for use in condensate systems with or without resin precoats. PowerGuard sintered stainless steel elements are available for underdrain strainers and specialty nuclear applications including reactor water cleanup (RWCU) precoatable filter demineralizer systems.

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Aegis® TurboGuard® RF Series Pre-Filters

Graver TurboGuard® RF Series filter is another in the series of larger geometry filters to handle higher volume applications with fewer filter elements. The result is much faster, easier filter changeouts.

Key features

6.5” diameter, large geometry for high flow rates
Capable of flow rates up to 80 gpm in the P2 configuration and 500 gpmin the P30 configurationl
Multi-layer pleated construction with optimized surface area
Thermally bonded construction
Absolute retention ratings from 1 to 100 microns
Retrofits competitive large diameter filter housings utilizing the “740” designor the large diameter 338 o-ring designs
All polypropylene construction provides for a high level of chemicalcompatability
TurboGuard’s one-piece extruded outer cage allows for easiermaintenance and remova

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Aegis® TurboGuard® Pressure Vessels

Vessel selection is based upon first selecting the proper material of construction - either unlined carbon steel or 304 Grade Stainless Steel. The next critical component to select is the maximum operation design pressure - either 250 psig or 400 psig.

Key features

Vessels are sized for 60” TurboGuard filter elements
For larger flow rates smaller units can be paralleledor stacked
ASME Code Section VIII Division 1
Horizontal or vertical mounting
Flanged connections
Designed for power plant use

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Data Sheet

Aegis® TurboGuard® GF Series Filter Cartridges

Graver Technologies' TurboGuard is a high-flow filter for condensate and high purity water applications, offering CRUD removal and advanced filtration.

Key features

Flow is from the inside core to the outer pleats
TurboGuard Filters are wrapped in a one-piece extrudedouter cage preventing both media migration during insideout flow, and tearing during removal
TurboGuard’s one-piece extruded outer cage allowsfor easier maintenance and removal
One-piece molded end caps, including molded-in bailfor secure handling during installation and removal
Quad Seal gasket system to provide maximum sealingsurfaces
Thermally bonded construction
Low pressure drop at specified flow rates
Optimized media surface area allows the full useof installed media area — not blocked off by media“squeezing”
A complete line of ASME Code Section VIII Division 1Housings are available

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Aegis® Thermoguard Wound Precoat Septa w/ SS

Aegis® Precision Wound Condensate Polishing Septa with Stainless Steel Hardware is used for steam generators in both nuclear and fossil fuel operations, ensures high-purity water by providing an optimum surface for Gravex Powdex® resin in precoat systems.

Key features

Stainless steel core and end fittings
Backwashable
High surface area
Designed specifically for plants that need to increasecondensate flow while maintaining high puritycondensate and smooth, consistent precoats
The first septa designed for use with difficult thinlayer precoating techniques
Manufactured in Graver’s ISO certified state of theart facility with PLC controlled winding of 100%polypropylene, prewashed yarn
Long run times
Built specifically for polishing application
Capable of supporting power upgrades by installingincreased diameter
Septa to reduce system flux rate with increasedprecoat contact time and longer run length
Carbon fiber and acrylic fiber available for hightemperature applications

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Aegis® PowerGuard® Stainless Steel Septa & Underdrains

Graver's PowerGuard® with Poroplate® is the solution for problematic wedge wire.

Key features

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® 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.

Key features

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® Septa & Strainers

Aegis® PowerGuard Septa offers low pressure drop, high strength, excellent corrosion resistance, and collapse strengths over 400 PSID.

Key features

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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Data Sheet

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.

Key features

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

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Aegis® Full Flow Guide Rod

Key features

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Aegis® Tilting Guide Rod

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Key features

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Aegis®

Filters

Aegis® TurboGuard® RF Series Pre-Filters

Aegis® TurboGuard® Pressure Vessels

Aegis® TurboGuard® GF Series Filter Cartridges

Aegis® Thermoguard Wound Precoat Septa w/ SS

Aegis® PowerGuard® Stainless Steel Septa & Underdrains

Aegis® Wound Precoat Septa with Stainless Steel Core

Aegis® PowerGuard® Septa & Strainers

Aegis® AFA® Pleated Septa

Aegis® Full Flow Guide Rod

Aegis® Tilting Guide Rod

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