Graver Technologies specializes in designing, engineering, and manufacturing a comprehensive line of high-performance and cost-effective filter cartridges and housings for liquid process filtration. Serving a variety of industries—such as food and beverage, chemical, microelectronics, and healthcare—our solutions are tailored to meet diverse application needs.

Key liquid process filters include:

  • Melt Blown Depth Filters: Designed for applications requiring reliable depth filtration.
  • Resin Bonded Filters: Ideal for high-temperature applications and resistant to a wide range of chemicals.
  • Microfiberglass and Polypropylene Pleated Cartridges: Provide an extensive filtration area for high efficiency and longer service life.
  • Membrane Filters with PTFE or Polyethersulfone (PES): Perfect for critical applications requiring precise filtration and high purity.

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Internal ID: 304
QXL™ Series

QXL™ Series

QXL™ depth filter has an extra-loft configuration for industrial solutions with agglomerated particles, gels, and high viscosity, offering absolute retention performance.

Key features:
  • Hybrid pleated depth construction combines graded pore structure with high surface area.
  • Constructed entirely of polypropylene — Compatible with a broad range of solutions and chemicals
  • Optimized pleat configuration — Provides the ideal combination of retention, flow rate and throughput
  • Excellent gel and agglomerated particle retention reduces defects
  • Available in common end cap configurations — Retrofits easily into most filter housings
Internal ID: 309
RTEC™ G Series

RTEC™ G Series

The RTEC™ G Series filters have microfiberglass/phenolic resin construction for a rigid pore structure that withstands temperature/viscosity extremes.

Key features:
  • Rigid microfiberglass/phenolic resin construction prevents unloading even at high differential pressures
  • Grooved outer surface increases surface area for longer on-stream life
  • Available in a wide range of removal efficiencies from 0.5 to 150 microns
  • Broad chemical compatibility
  • Provided with outer cotton wrap to aid in handling and protect the surface
Internal ID: 317
Silt Density Index

Silt Density Index

This technical brief discusses the importance of Silt Density Index (SDI) testing in reverse osmosis (RO) systems to predict and prevent membrane fouling, particularly when producing drinking water from seawater. Maintaining a low SDI value is crucial to minimize fouling and maintain membrane performance.

Key features:
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Internal ID: 324
Stratum™ A Series

Stratum™ A Series

Stratum A Series filters are highly efficient and retain captured contaminants even at high differential pressures, delivering 99.9% efficiency at the stated micron.

Key features:
  • Absolute retention ratings from 0.3 to 100 microns
  • Multizone melt blown depth filter with a graded pore structure for maximum dirt holding capacity
  • Thermally bonded fibers for high void volume and long onstream life
  • Lot traceable filters come with certificate of conformance
  • 100% pure virgin polypropylene
  • Molded center core for higher temperature and pressure capability
  • Free of surfactants, binders and adhesives
Internal ID: 326
Stratum™ C Series

Stratum™ C Series

Stratum A Series filters are highly efficient and retain captured contaminants even at high differential pressures, delivering 99.9% efficiency at the stated micron.

Key features:
  • 90% Nominal retention ratings from 0.5 to 100 microns
  • Multizone melt blown depth filter with a graded pore structure for maximum dirt holding capacity
  • Thermally bonded fibers for high void volume and long onstream life
  • Lot traceable filters come with certificate of conformance
  • 100% pure virgin polypropylene
  • Molded center core for higher temperature and pressure capability
  • Free of surfactants, binders and adhesives
Internal ID: 330
TB-002 QXL Applications

TB-002 QXL Applications

Enhance semiconductor wafer manufacturing with QXL Series slurry filtration, reducing defects and improving yields in CMP processes.

Key features:
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Internal ID: 332
TB-009 USP, FDA, NSF

TB-009 USP, FDA, NSF

Use this technical brief to better understand USP, FDA, and NSF.

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Technical Brief
Internal ID: 333
TB-020 Flavors and Extracts

TB-020 Flavors and Extracts

This document discusses the production of flavors, focusing on natural flavors derived from various sources and the importance of filtration in ensuring high-quality flavor compounds for use in consumer products.

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Internal ID: 334
TB-021 Filtration Housings

TB-021 Filtration Housings

This document provides an overview of filtration vessels and their importance in various industries, including healthcare, microelectronics, and refineries.

Key features:
Internal ID: 335
TB-022 Deep Well Injection

TB-022 Deep Well Injection

This document discusses the importance of filtration in liquid processing, focusing on deep well injection sites. It emphasizes the need for effective filtration to maintain the quality of injected fluids and avoid clogging.

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Internal ID: 336
TB-023 Filter Change-out : Law of Diminishing Returns

TB-023 Filter Change-out : Law of Diminishing Returns

This document contains information on the concept of diminishing returns in filtration, specifically how adding more filters can impact flow resistance and pressure differentials, as well as recommendations for when to change filters for optimal performance.

Key features:
Internal ID: 337
TB-024 System Sizing

TB-024 System Sizing

This document discusses the concept of diminishing returns in filtration processes across various industries and provides insights into optimizing filter change-out strategies based on differential pressure and available filter area.

Key features:
Internal ID: 338
TB-025 Digital Printing Inks

TB-025 Digital Printing Inks

For digital printing inks, filtration is crucial to ensure print quality and minimize downtime. Different ink types (pigment-based, dye-based, solvent-based, and UV curable) require specific filtration methods to remove contaminants, agglomerates, and oversized pigments, optimizing image quality.

Key features:
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Internal ID: 345
TPE™ Series

TPE™ Series

TPE™ filters are rugged metal filters that withstand temperature extremes, high pressures, and corrosive substances, suitable for various liquid and gas applications.

Key features:
  • Constructed entirely of sintered titanium or 316 Stainless
  • Steel powder — offers high corrosion resistance
  • Cleanable/backwashable — allows for reuse, maximum economy
  • High temperature sintering — no media migration, high pressure capabilities
  • Various gasket/ORing materials and configurations — easily retrofits most systems
Internal ID: 339
TefTEC™ P Series

TefTEC™ P Series

TefTEC™ P membrane cartridges offer complete bacterial retention and product sterility for biopharmaceutical final filtration.

Key features:
  • Singlelayer construction provides superior flow rates and minimizes filtration system size
  • 100% Flushed with 18 megohm DI water and integrity tested
  • Filters are manufactured, flushed, tested and packaged in an ISO Class 7 Cleanroom Environment
  • Each filter element stamped with pore size, lot and serial number for identification and traceability
  • Complete bacterial removal in liquid at a challenge level of 107 /cm2 Brevundimonas diminuta
  • Retentive for aerosolized virus
  • Validation guide available
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