Industrial Liquid Process Filters
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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.
Unlike system providers, our expertise is solely focused on filter and cartridge innovation. This allows us to deliver high-performance, long-lasting process liquid filters that ensure purity, efficiency, and compliance in critical liquid applications.
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.
Why Advanced Liquid Filtration Matters
In industries where liquid purity directly impacts product quality, compliance, and equipment performance, choosing the right filtration technology is essential. Graver Technologies’ portfolio of liquid filtration cartridges is designed to:
- Precision Contaminant Removal: Remove particulates, microorganisms, and chemical contaminants from critical process fluids with industry-leading efficiency ratings down to 0.1 micron.
- Enhanced Operational Efficiency: High-flow cartridges designed for maximum throughput while maintaining filtration integrity, reducing downtime and operational costs. Support sterile liquid filtration in regulated environments.
- Regulatory Compliance: FDA, USP Class VI, and ISO certified filters ensure compliance in regulated pharmaceutical, biotech, and food processing environments.
- Custom Engineering Solutions: Tailored filtration solutions designed for unique process requirements, challenging chemistries, and specialized industrial applications.
Our Liquid Filtration Technologies
We offer a broad range of process filtration cartridges and housings engineered for specific industrial needs.
Depth Filters for Liquids
- Melt blown filter cartridges
- Stratum™ A: Absolute-rated polypropylene
- Stratum™ C: Cotton fiber construction
- MBC™: Multi-layer bonded carbon
- Crystal MBF™: Ultra-pure polypropylene
- Resin bonded liquid filters for solvents
- PMC®: Chemical compatibility
- PMG™: Gradient density structure
- PME™: Enhanced dirt-holding capacity
- PMA™: Activated carbon integration
- Applications: Pre-filtration, high dirt-holding capacity, aggressive chemical environments, solvent filtration.
Pleated Liquid Filters
- Microfiberglass & polypropylene pleated cartridges
- QXL™: Extended life design
- QMC™: Medium efficiency rating
- GFP™: Pharmaceutical grade
- GFC™: Chemical processing optimized
- Polypropylene Series:
- QMA™: Absolute-rated filtration
- GLP™: Low protein binding
- GHP™: High purity applications
- Applications: precision liquid filters for industrial water filtration cartridges and chemical processing liquid filters.
Membrane Filters for Liquids
- PES membrane liquid filters (ZTEC™ Series)
- ZTEC™ WB: Wide compatibility range
- ZTEC™ P: Pharmaceutical applications
- ZTEC™ G: General industrial use
- ZTEC™ E: Enhanced flow rates
- ZTEC™ SLWB/SLB/B: Specialized formulations
- PTFE membrane filters for sterile liquid filtration
- TefTEC™: Aggressive chemical resistance
- WaterTEC™: Aqueous applications
- RTEC™ G: Gas/liquid separation
- Applications: pharmaceutical liquid process filters, biotech, food safety, and sterile liquid filters for critical processes.
High Flow Liquid Filter Cartridges & Housings
- Large Volume Processing
- High Flow RF: Reverse osmosis pre-treatment
- High Flow GF: General filtration
- GSS™: Stainless steel construction
- Citadel®: Multi-round configuration
- CelluTEC®: Cellulose-based media
- Key Features:
- Flow rates up to 1,500 GPM per cartridge
- Reduced housing footprint
- Lower differential pressure
- Extended service life
- Applications: Municipal water treatment, industrial process water, large-scale chemical processing, power generation.
Industries We Serve
Our industrial filter cartridges are trusted across:
- Food & Beverage Applications→ Beer clarification, wine filtration, dairy processing, bottled water purification, soft drink production, juice processing.
- Key Requirements: Food-grade materials, taste/odor neutrality, high throughput
- Pharmaceutical & Biotech Applications→ Sterile drug manufacturing, injectable preparations, cell culture media, buffer solutions, cleanroom air/water systems.
- Key Requirements: Sterile filtration, bacterial retention, regulatory compliance, validation support
- Chemical Processing Applications → Solvent purification, resin filtration, catalyst recovery, acid/base processing, polymer solutions.
- Key Requirements: Chemical compatibility, high temperature resistance, corrosion resistance
- Microelectronics Applications → Ultrapure water systems, semiconductor process chemicals, photoresist filtration, CMP slurries.
- Key Requirements: Ultra-low extractables, particle-free construction, sub-micron filtration.
- Power Generation Applications → Condensate polishing, cooling water treatment, boiler feedwater, turbine oil filtration.
- Key Requirements: High temperature/pressure resistance, ionic contamination control
- Water Treatment Applications → RO pre-treatment, municipal water processing, industrial process water, wastewater treatment.
- Key Requirements: High dirt-holding capacity, chemical resistance, long service life
Why Choose Graver Technologies?
- Focused Expertise: We are a trusted liquid filter supplier and manufacturer, delivering high-quality filtration solutions that ensure reliable performance across a wide range of liquid filtration applications.
- Broad Portfolio: From depth and pleated liquid filters to membrane filters for sterile applications.
- Compliance & Safety: Our filters meet FDA, USP, and ISO requirements for regulated industries.
- Custom Solutions: Ability to engineer liquid custom filters for specialized applications.
- Trusted Globally: A proven partner for liquid filtration companies and OEMs worldwide.
Graver’s High Flow RF Series Filter Housings accept both Graver and competitive High Flow RF Series large-geometry filter elements. They come in vertical, horizontal, and tipped horizontal designs that hold 1 to 15 elements. The housings are built in 304L or 316L stainless steel and rated to 150 psig, for high-flow liquid applications such as pre-RO, desalination, oil and gas, food and beverage, pulp and paper, and petrochemicals.
- Accepts Graver and competitive High Flow RF Series large-geometry filter elements
- Industrial-grade housings with 304L or 316L stainless steel wetted parts
- Configurations for 1, 3, 4, 7, 10, 12, or 15 elements per housing
- Accepts 10", 20", 40", and 60" High Flow RF cartridges
- Vertical, horizontal, and single-round tipped horizontal designs
- Tipped horizontal design allows element removal without a platform and drains from the back of the vessel to prevent fluid spills
- Rated to 150 psig (10.3 bar) at 257°F (125°C) in liquid service, with higher-pressure options available on request
- Segment screw hold-down clamps on single-round housings and swing bolt clamps on multi-round housings
- Hold-down plate keeps elements from unseating under back pressure
- Equipped with vent and drain
- Buna-N, EPDM, silicone, and FKM O-ring options
- Tri-Clamp or flanged inlet/outlet connections from 1.5" to 12"
- Side in/side out and side in/bottom out inlet/outlet configurations
- Optional gauge ports, hinged cover, and davit arm
- Surface finish options include mechanical polish, electropolished interior, or bead blasted and passivated
ZTEC SLB Serial Layer Bioburden Reduction grade membrane cartridges is made with two matched layers of TECpore® to provide consistent and lasting performance for bioburden reduction and particle removal across a wide range of beverage, pharmaceutical and biological fluids.
- Manufactured with Graver Technologies’ high performance TECpore PES membrane in an ISO Class 7 Cleanroom Environment
- 100% flushed with ultrapure DI water
- Serial layer PES membrane is two filters in one greatly extending life for greater throughput, improved efficiency, reduced clogging
- Repeatably Steamable/Sanitizable
- High retentions up to 107/cm2 challenged for bacteria and yeast
ZTEC SLWB Serial Layer cartridge filters utilize dual layer TECpore polyethersulfone membrane to provide consistent removal of spoilage organisms and inorganic particulate to protect your beverage from spoilage
- Manufactured with Graver Technologies’ high performance TECpore PES membrane in an ISO Class 7 Cleanroom Environment
- 100% flushed with ultrapure DI water
- Serial layer PES membrane is two filters in one greatly extending life for greater throughput, improved efficiency, reduced clogging
- Repeatably Steamable/Sanitizable
- High log reduction values for spoilage organisms
- Quick wet treatment available
Graver High Flow C Series filter housings accept Graver and competitive High Flow large-geometry elements, holding 1 to 7 cartridges in 20", 40", or 60" lengths. They come in vertical, horizontal, and spill-free tipped horizontal designs, with 304 or 316 stainless steel construction rated to 150 psig in liquid service.
- Accepts Graver and competitive High Flow Series large-geometry cartridges in 20", 40", and 60" lengths.
- Configurations for 1, 3, 4, or 7 elements per housing.
- Vertical, horizontal, and tipped horizontal designs, with side-in/side-out and side-in/bottom-out piping arrangements.
- Tipped horizontal design allows element removal without a platform and drains fully from the back of the vessel.
- Hold-down tabs keep elements from unseating under back pressure.
- Swing bolt hold-down clamps for fast, secure closure.
- Wetted parts in 304 or 316 stainless steel.
- Rated to 150 psig at 257°F (125°C) in liquid service, with higher ratings available on request.
- Vent, drain, and gauge port standard, available in Tri-Clamp or FNPT connections.
- Seal options in Buna-N, EPDM, silicone, FKM, TEV, and TES.
- Optional hinged cover, davit arm, ASME Code stamping, and electropolished or bead-blasted finishes.
Graver RTEC™ G Series filter cartridges are rigid resin-bonded filters with microfiber glass/phenolic resin construction. They withstand extremes of viscosity and temperature without compression or collapse. Their true graded density structure captures coarse particles in the outer zones and finer particles near the core, putting the full depth of the filter to work.
- Rigid microfiber glass/phenolic resin construction prevents unloading, even at high differential pressures.
- True graded density construction for full depth utilization and high dirt-holding capacity.
- Grooved outer surface increases surface area for longer on-stream life.
- Retention ratings from 1 to 150 microns.
- Broad chemical compatibility.
- Rated to 150 psid at 200°F (93°C) and 50 psid at 375°F (190°C).
- Tin-coated steel core standard, with optional polypropylene or 304 stainless steel cores.
- Cotton outer wrap aids handling and protects the filter surface.
- Available in nominal lengths from 3.75" to 40", with a 2.6" (66 mm) outside diameter.
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High Flow CR (HFCR) Cartridges combine pleated polypropylene and polyethersulfone media in an all-polypropylene element, with approximately 52 ft² (4.8 m²) of filtration area per 20-inch length. They are third-party verified for cyst reduction under the EPA LT2ESWTR, built from FDA-compliant materials, and meet USP Class VI, which makes them a fit for drinking water and other high-flow applications that need compliance documentation.
- Approximately 52 ft² (4.8 m²) of pleated filtration area per 20-inch element for high flow capacity
- Dual pleated polypropylene and polyethersulfone media in all-polypropylene construction
- Performance-tested by an independent third-party lab for cyst reduction under the Long Term 2 Enhanced Surface Water Treatment Rule
- Materials comply with FDA 21 CFR 174.5, 177.1520 and 177.2600 for food and beverage contact
- Meets the USP Class VI Biological Test for Plastics
- Tested for migration under EU Regulations 1935/2004 and 10/2011 (amended by 2020/1245)
- Minimal rinse required before use
- Full traceability of material and production data by individual lot number
- Manufactured under an EN ISO 9001:2015 registered Quality Management System
- Four-year shelf life from ship date when stored unopened in a dry, ambient environment
- Compatible with Graver High Flow Filter Housings
Graver’s High Flow RF Series Filter Cartridges are 6.5" diameter, large-geometry pleated filters that handle high-volume applications with fewer elements, so changeouts are faster and easier. Their multi-layer, all-polypropylene media gives high dirt-holding capacity, which extends service life and allows smaller, lower-cost systems in water, chemical, refinery, food and beverage, and wastewater applications.
- 6.5" (16.5 cm) diameter large-geometry design for high flow rates with fewer elements
- Absolute retention ratings from 1 to 100 microns (1, 3, 5, 10, 20, 40, 60, 75, 100 µm)
- Flow rates up to 80 GPM (302 lpm) in the P2 configuration and 500 GPM (1,890 lpm) in the P30 configuration
- Multi-layer pleated construction with optimized surface area for high dirt-holding capacity
- Surface area of 11 ft² (1.0 m²), 43 ft² (4.0 m²), and 64 ft² (5.9 m²) for 10", 40", and 60" elements
- Thermally bonded, all-polypropylene construction for broad chemical compatibility
- Retrofits competitive large-diameter housings that use the “740” design or the large-diameter 338 O-ring design
- Maximum operating temperature of 176°F (80°C)
- Maximum differential pressure of 60 psid at 70°F (4.1 bar at 21°C), with a recommended change-out pressure of 35 psid (2.4 bar)
- Gasket and O-ring options in Buna-N, EPDM, silicone, Viton, and Teflon-encapsulated Viton
- Materials comply with FDA 21 CFR 174.5 and 177.1520 for food and beverage contact
- Certified to NSF/ANSI Standard 61 for materials requirements only (component)
- Compatible with Graver High Flow RF Series Filter Housings
CelluTEC® cartridges combine pleated cellulosic media embedded with diatomaceous earth (DE) and a polypropylene layer for efficient particulate, haze, and turbidity removal in high-loading applications. The compact 2.7" design delivers high flow rates and solids holding in a small footprint, which suits food and beverage, wine, beer, spirits, botanical extract, and water systems.
- Dual-layer cellulosic and DE media with polypropylene for high solids holding and high flow rates
- 99% retention at rated pore size, with ratings of 0.5, 1, 10, and 25 µm
- Compact 2.7" (6.9 cm) OD in 10", 20", 30", and 40" lengths, with 9.75", 19.5", 29.25", and 39" lengths for double open end configurations
- 3.7 ft² (0.34 m²) of surface area per 10" element
- Thermally bonded all-polypropylene construction with a PBT O-ring insert
- Wide range of end configurations, including DOE, 222 and 226 SOE flat and fin, and internal O-ring styles
- Gasket and O-ring options in Buna-N, EPDM, Silicone, Viton, Teflon-encapsulated Viton, and Teflon
- Maximum operating temperature of 176°F (80°C) and maximum differential pressure of 60 psid at 70°F
- Meets USP Class VI and FDA 21 CFR 177.1520, 177.2600, and 186.1673, and complies with EU Regulations 1935/2004 and 10/2011 for food contact
The CelluTEC is dual layered with cellulosic median that contains DE (Diatomaceous Earth) and polypropylene media to provide enhanced filtration
- Compact cartridge design to minimize space required
- 99% retention at rated pore size
- HF cartridge rated up to 30 GPM (114LPM) per 10" element for optimal filtration
- Thermally Bonded Construction
- High Solids Removal
- Excellent Product compatibility
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The CelluTEC is dual layered with cellulosic median that contains DE (Diatomaceous Earth) and polypropylene media to provide enhanced filtration
- Dual cartridge size available, standard 2.7" and High Flow RF 6"
- Compact cartridge design to minimize space required
- 99% retention at rated pore size
- HFRF cartridge rated up to 15GPM per 10" element for optimal filtration
- Thermally Bonded Construction
- High Solids Removal
- Excellent Product compatibility
Citadel pleated membrane cartridges feature a PTFE membrane and PFA structural components to provide excellent chemical and temperature resistance for aggressive chemical applications such as etchers, strippers, cleaners and bulk chemicals.
- Manufactured, flushed, tested and packagedin an ISO Class 7 Cleanroom Environment
- Filters are flushed with 18 MΩ-cm DI water toensure low extractables and low particle shedding
- 100% integrity tested to provide reliable performance
- Resistivity rinse-up to 18 MΩ-cm and single digitppb TOC levels with minimal throughput
- Pore size ratings from 0.05 to 10 micronto meet a broad range of applications
- Wet-Pack option available to eliminate the requirementfor solvent pre-wetting in aqueous applications
Use this document to explore Crystal MBF Series Filter Cartridges.
- Available in nominal ratings from 1 to 75 microns
- Formed Crystal Core for excellent collapse strength
- Graded pore construction for long on-stream life
- Melt blown media resists dirt unloading as differential pressure increases
- Non-shedding
- High dirt holding capacity
- Economical depth filtration
- Free of binders, adhesives and surfactants
- Highly consistent performance
The cost-effective GFC™ filter element is constructed of pleated Borosilicate Microfiberglass media that combines excellent flow rates with exceptional service life.
- Micron ratings from 0.2 to 30 μm — Broad application range
- Uniform pore size — High removal efficiency
- High surface area — High Dirt Capacity
- Long service life — Minimizes maintenance costs
- Fixed pore construction — Eliminates dirt unloading at maximum differential pressure
- Small diameter fibers — High flow rates at low pressure drops
The cost-effective GFP™ filter element is constructed of pleated Borosilicate Microfiberglass media that combines excellent flow rates with exceptional service life.
- Polyester hardware extends application range beyond the limits of polypropylene.
- Higher temperature capability of 230°F (110°C)
- Micron ratings from 0.2 to 30 μm — Broad application range
- Uniform pore size — High removal efficiency
- High surface area — High flow capability and dirt holding capacity
- Long service life — Minimizes maintenance costs
- Fixed pore construction — Eliminates dirt unloading at maximum differential pressure
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The GHP Series filter housings are made of 316L stainless steel and engineered using 3A standards for filtration applications requiring high purity production streams.
- Durable 316L stainless steel for corrosion resistance
- Vband clamp or swing bolt for quick and easy cartridge changeouts
- Accepts 5", 10", 20", 30"and 40" cartridges with DOE, 222/226 configuration options
- Accommodates up to 2 3/4" OD cartridges
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The GLP Series filter housings are constructed of durable stainless steel and meet general purpose industrial and commercial filtration needs.
- Durable 316 stainless steel for corrosion resistance
- Vband clamp or swing bolts for quick and easy cartridge changeouts
- Accepts 10", 20", 30" and 40" cartridges with DOE, 222 and 226 configuration options
- Accommodates up to 2 3/4" OD cartridges
- Universal design has components to allow both DOE and 222 oring cartridge configurations to be used
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The GSC Series of single cartridge metal filter cartridge housings are constructed of 316 stainless steel with a clamp closure to service a wide range of general purpose filter applications.
- Single shell construction for quick spillfree cartridge replacement
- Inline ¾" and 1" inlet/outlet connections for ease of installation
- Drains/Vent built in
- Flow rates of up to 7 GPM (26.5 lpm) per 10" filter cartridge
- Housing pressure drop is 0.6 PSID at 7 GPM (40mbar @ 26.5 lpm)
- Mounting bracket available
Graver High Flow Series filters feature a larger geometry to handle higher flows with fewer filter elements. The result is much faster, easier filter changeouts.
- 6" diameter, large geometry for high flow rates
- Absolute retention ratings from 1 to 100 microns
- Capable of flow rates up to 500 GPM in a single 60" element
- Inside-out flow retains contaminant even during changeout
- Multi layer pleated construction with optimized surface area
- Outer cage prevents media extrusion problem experienced with somecompetitive offerings
- Unique Quad Seal gasket provides maximum seal integrity
- Retrofits competitive high flow filter housings
- Thermally bonded construction
Graver High Flow GF Series filters features microfiber glass media in a larger geometry to handle higher flows with fewer filter elements.
- Materials of construction allow compatibility with some chemistries not served by all polypropylene elements
- 6" diameter, large geometry for high flows
- Absolute retention ratings from 1 to 20 microns
- Capable of flow rates up to 500 GPM in a single 60" element
- Insideout flow retains contaminant even during changeout
- Outer cage prevents media extrusion problem experienced with some competitive offerings
- Unique Quad Seal gasket provides maximum seal integrity
- Retrofits competitive high flow filter housings
- Thermally bonded construction
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Graver High Flow Series filter housings are designed to accept Graver and competitive High Flow Series large geometry filter elements.
- Industrial grade housings available in 304, 316 and carbon steel wetted parts
- ASME U code available
- Designs for 1, 3, 4 or 7 filters per housing for flows up to 3500 GPM*
- 150 psig designs
- Accepts 20", 40" and 60" High Flow cartridges
- Vertical and horizontal designs offered
- Hold down plate prevents elements from unseating due to back pressure
- Filter removal tool available to facilitate element changeout
- Swing bolts on 150 psig design
- Equipped with 1" vent and 2" drain (1" drain on tipped horizontal style)
An economical, nominally rated disposable filter element constructed of 100% polypropylene media for chemical compatibility with a variety of process fluids.
- Available in nominal ratings from 1 to 75 microns
- Molded core for excellent collapse strength
- Graded pore construction for long onstream life
- Melt blown media resists dirt unloading as differential pressure increases
- Non-shedding
- High dirt holding capacity
- Economical depth filtration
- Thermal bonded endcaps optional
- Free of binders, adhesives and surfactants
The all polypropylene filter retains particles with absolute efficiency and is available in various pore sizes, suitable for a wide range of applications.
- Micron ratings from 0.2 to 100 μm — Broad application range
- “Absolute” efficiency — Rated at 99.98% (Beta 5000)
- Competitive surface area — High flow rates, and long online service — minimize maintenance cost
- Fixed pore structure — Eliminates dirt unloading at maximum differential pressure
- Polypropylene construction — Inert to many process fluids
- Various gasket/Oring materials — Compatible with a variety of fluids
- Manufactured in continuous lengths up to 40 inches
The pleated filter cartridge has utilizes polypropylene media with high surface area, allowing for greater system flow rate. It's affordable & made for a range of applications.
- Micron ratings from 0.2 to 50 μm — Broad application range
- Fixed pore structures — Resists unloading of captured contaminant
- Polypropylene Construction — Inert to many process fluids
- Various Gasket/ORing materials — Compatible with a variety of fluids
- Economically efficient filtration
- Manufactured in continuous lengths up to 40 inches
For applications requiring an economical solution, choose the PME Series to deliver absolute efficiency in a broad range of particle sizes. This all polypropylene filter is suitable for a wide range of applications and provides industry certifications to satisfy most critical requirements.
- Micron ratings from 0.2 to 50 μm — Broad application range
- 2.55" diameter to fit installed housings with ease
- “Absolute” Efficiency — Rated at 99.98% (Beta 5000)
- Optimized surface area — High dirt holding for long service life
- Fixed pore structure — Eliminates dirt unloading at maximum differential pressure
- Polypropylene Construction — Inert to many process fluids
- Various Gasket/O-Ring materials — Compatible with a variety of fluids
- Manufactured in continuous lengths up to 40 inches
This high efficiency, economical filter element is constructed of pleated Borosilicate Microfiberglass media that combines excellent flow rates with exceptional service life to support a wide range of chemical and industrial applications
- Micron ratings from 0.2 to 30 μm — Broad application range
- Uniform pore structures — High removal efficiency
- Various Gasket/ORing materials — Compatible with a variety of fluids
- Economically efficient filtration
- Manufactured in continuous lengths up to 40 inches
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
This filter is constructed with a high surface area melt blown polypropylene media for low initial pressure drop, high dirt holding capacity, and efficiency performance.
- Micron ratings from 0.2 to 20 μm — broad application range
- “Absolute” Efficiency — rated at 99.98% (Beta 5000)
- High surface area — high flow rate, and long service life — minimize maintenance cost
- Fixed pore construction — resists dirt unloading at maximum differential pressure
- Polypropylene construction — inert to many process fluids
- Various gasket/Oring materials — compatible with many fluids
- Heavy duty molded cage — high structural strength
- Highly consistent melt blown media for consistent performance
This innovative product has melt-blown polypropylene media with multiple layers, providing high flow rates and ideal depth filtration.
- Micron ratings from 0.1 to 10 μm — Broad application range
- High Filtration Efficiency — 95%
- Graded pore structure — Multilayer, media for high dirt holding capacity
- Fixed pore construction — Resists dirt unloading at maximum differential pressure
- Polypropylene construction — Inert to many process fluids
- Various Gasket/Oring materials — Compatible with many fluids
QXL™ depth filter has an extra-loft configuration for industrial solutions with agglomerated particles, gels, and high viscosity, offering absolute retention performance.
- 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
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Stratum A Series filters are highly efficient and retain captured contaminants even at high differential pressures, delivering 99.9% efficiency at the stated micron.
- 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
Stratum C Series filters are highly efficient and retain captured contaminants even at high differential pressures, delivering 90% efficiency at the stated micron.
- 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
TefTEC™ P membrane cartridges offer complete bacterial retention and product sterility for biopharmaceutical final filtration.
- 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
TefTEC™ filters have PTFE membrane & polypropylene components, offering superior hydrophobicity and cost-effective alternative to all-fluorocarbon filters.
- High surface area, singlelayer construction provides superior flow rates and minimizes filtration system size
- 100% Flushed with 18 MΩcm 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 qualification guide available
- Available prewet for use with aqueous based chemicals
TefTEC™ V cartridge filters are cost-effective with PTFE membrane & polypropylene support, ideal for compressed air and tank vent apps.
- 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
- Demonstrated bacterial removal in air with an aerosol challenge level of 107
- Brevundimonas diminuta/10" cartridge
- Complete qualification guide available
TPE™ filters are rugged metal filters that withstand temperature extremes, high pressures, and corrosive substances, suitable for various liquid and gas applications.
- 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
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
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
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
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™ 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
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
This document explores Graver Technologies' liquid process filters product offering.
Explore Graver Technologies wide range of filtration solutions, including specialized filters for the beverage industry, ensuring high-quality filtration for producers of water, wine, beer, soft drinks, as well as municipal water systems.
This pharma brochure explores critical filtration for the healthcare industry.
Use this technical brief to better understand USP, FDA, and NSF.
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.
This document provides an overview of filtration vessels and their importance in various industries, including healthcare, microelectronics, and refineries.
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.
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.
This technical brief provides the Cleaning and Sanitizing Procedure for Graver Filter Products.
Enhance semiconductor wafer manufacturing with QXL Series slurry filtration, reducing defects and improving yields in CMP processes.
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.
This document explores the Suggested Cleaning/Regeneration Method for Porous Metal Filters.
This technical brief discusses the challenges posed by Cryptosporidium parvum and Giardia lamblia, protozoan contaminants in water. It explores their resistance to common disinfection methods and the need for effective removal, especially in municipal water systems.
This technical brief contains Housing Sizing Guidelines for Graver High Flow Filter Cartridges.
Use this technical brief to explore Graver Technologies' wde variety of end configurations for liquid filter cartridges.
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.
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.
Every industry has an abundance of terms that may be used to describe products and processes. Because of the critical nature of the pharmaceutical and biotechnology markets and the fact that it is highly regulated, it is critical to define and understand some of the more common terms.
This technical brief explores the role of membranes in microbial retention.
This technical brief discusses the backwashing of microfiltration cartridge elements, a process used to clean filters by reversing flow to remove particles and extend filter life, particularly in applications like catalyst recovery and beer and wine filtration.
Explore Graver Technologies' Cartridge Regeneration Procedures for Wine & Beer Applications.
This technical brief explores Pre-Wetting Hydrophilic Membranes for Integrity Testing.
This technical brief identifies why integrity testing is crucial for membrane filters in bioburden control. Bubble point and diffusive flow are common, but Pressure Hold Test is recommended for multi-round housings.
This case study discusses how Graver Technologies was able tp help a Sterile Injectables company achieve better post-carbon bed treatment for improved final product.
This application case study looks into improving optical coatings for specialty faceplates used in military applications to ensure clarity and reduce defects.
This case study details how Graver GFP 1-30P7E filters improved condensate water filtration for a citric acid plant, overcoming rust and dirt issues.
This application study focuses on the use of PTFE membrane filters in a citrus juice processing plant to prevent juice spoilage.
This case study highlights how Graver PMC pleated filters improved filtration efficiency in a high purity water system as pre-RO filters, leading to reduced maintenance and labor costs.
This case study discusses the use of filtration in the semiconductor wafer manufacturing industry, specifically in the process of wafer backgrinding for integrated circuits.
This case study highlights how High Flow Filters effectively cleaned a Chilled Water Loop, reducing contamination and maintenance costs.
This application case study explores a customer's search for cost-effective filtration alternatives to high-priced Pall High Flow Ultipleat filters, driven by concerns over operational costs, filtration efficiency, and operator safety.
This case study explores the importance of water quality in the context of animal herds, specifically focusing on improving filtration efficiency for RO membrane protection in dairy farms.
This case study explores how Graver Stratum C 3 micron filters improved filtration efficiency and saved costs for a sausage casing manufacturer.
This application case study focuses on the use of Graver MBF series filters in an ethanol production plant to protect RO membranes and meet water quality requirements for various processes.
This case study discusses the filtration processes and challenges in the bottled water industry, focusing on improving water quality and cost savings using Graver High Flow cartridges.
This case study discusses the filtration of CBD oil from Cannabis and Hemp plants, focusing on the recovery and purification process for this natural product.
This application case study focuses on a solvent-based ink manufacturer's quest to effectively remove agglomerated particles while preserving colored pigments.
This application brief explores the effectiveness of Reverse Osmosis (RO) in removing contaminants from water. It emphasizes the importance of membrane pretreatment using high-performance pleated filter cartridges to extend membrane life, reduce operational expenses, and minimize environmental impact.
This application brief explores filtration opportunities in various microelectronics applications, including Light Emitting Diodes (LEDs), Photovoltaic Cells (Solar Cells), and Flat Panel Displays (FPDs).
This application brief explores the filtration requirements in the manufacture of integrated circuits, including various electronic components like transistors, capacitors, resistors, diodes, LEDs, and photocells.
This case study explores the essential aspects of vent filtration, focusing on system sizing considerations for tank vent filters. It also emphasizes the importance of proper air flow to protect tank contents from contaminants.
This case study explores numerous filter applications for Graver liquid process filters and can benefit from the superior performance of Graver’s Stratum, MBC and RTEC Series filters.
This case study explores the comparison between resin-bonded and melt-blown filter cartridges for industrial applications, specifically in protecting seals of rotating equipment in environments like Pulp and Paper mills.
This application explores filtration opportunities within the microbrewery industry. It discusses various filtration steps in the brewing process, such as clarification following fermentation and microbial stabilization prior to bottling.
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.
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
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
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 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
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
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 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
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
Frequently Asked Questions
What is the difference between depth filters and pleated liquid filters?
What is the difference between depth filters and pleated liquid filters?
Depth filters capture contaminants throughout the entire media thickness, making them ideal for high dirt-loading applications and pre-filtration. They excel in removing variable particle sizes and can handle turbid liquids. Pleated filters use surface filtration with a larger effective surface area, providing precise particle removal ratings and longer service life in cleaner applications. Choose depth filters for challenging feed streams and pleated for final polishing filtration.
Which liquid filters technology is best for pharmaceutical sterile filtration?
Which liquid filters technology is best for pharmaceutical sterile filtration?
For pharmaceutical applications, PES (polyethersulfone) membranes from our ZTEC™ series offer the optimal balance of bacterial retention (>10⁷ reduction of B. diminuta), low protein binding, and broad chemical compatibility. For aggressive solvents or extreme pH conditions, PTFE membranes (TefTEC™ series) provide superior chemical resistance while maintaining sterile filtration capabilities. Both technologies meet FDA and USP Class VI requirements.
Do you manufacture cartridges for industrial water treatment and RO systems?
Do you manufacture cartridges for industrial water treatment and RO systems?
Yes, we specialize in industrial-grade water treatment cartridges including RO filter cartridge, condensate polishing, and multi-stage water purification systems. Our high-flow cartridges can handle up to 1,500 GPM per element, significantly reducing housing footprints.
What makes resin bonded filters suitable for chemical processing?
What makes resin bonded filters suitable for chemical processing?
Resin bonded filters (PMC®, PMG™, PME™, PMA™) use thermoplastic binders that provide exceptional chemical resistance to solvents, acids, bases, and aggressive chemicals. The graduated density structure ensures optimal particle loading throughout the media depth. These filters maintain structural integrity at elevated temperatures and can handle viscous fluids that would blind surface-type filters.
Can Graver Technologies design custom filtration solutions?
Can Graver Technologies design custom filtration solutions?
Absolutely. Our engineering team specializes in custom filter design for unique industrial liquid processing. We can modify media formulations, optimize cartridge dimensions, develop specialized end caps and gaskets, and create application-specific filtration solutions. Our R&D capabilities include pilot testing, validation support, and scale-up assistance. Contact our technical team to discuss your specific requirements.
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