Filter  >  Water filter housings

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Pentek water filter  

Pentek water filter

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  WF water filter  

WF water filter

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  Cintropur water filter  

Cintropur water filter

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Cintropur water filter spare parts  

Cintropur water filter spare parts

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Kwerk GmbH - Secure Filtration with Reliable Housing Solutions


Filter cartridges and filter housings from the B2B portal Kwerk GmbH offer customers great flexibility in choosing their filtration solution and its application. In the field of filter technology, we provide a wide range of high-quality products, including PENTEK cartridge filters, bag filters, and related accessories. Each variant has its specific advantages and disadvantages, but ultimately, the filtration result is what matters. Based on that, the appropriate filter elements can be selected. Our filter cartridges are high-quality filter inserts designed for use in process engineering for water treatment, as well as in the chemical and process industries. Regardless of the medium, whether in electroplating, water treatment, or the production of special process baths, the B2B portal Kwerk GmbH always has the right solution in its delivery program.

Standard products in our range include:

- Wound filter cartridges
- Activated carbon filter cartridges
- BIG BLUE housings
- ECP filter cartridges
- PCF filter cartridges

We offer you a wide selection of depth filtration, surface filtration, and activated carbon filtration. We attach great importance to customer-oriented consultation. The filter cartridges and filter housings from Kwerk GmbH are delivered directly from stock within 1 day.

Filter Cartridges:

Filtration with filter cartridges offers various application possibilities in water treatment. Depending on the filter cartridge and medium, the filter elements are also used in the treatment of solvents, paints, gases, electroplating baths, varnishes, oils, and chemicals. One particular application area is the removal of odors and flavors. Activated carbon filter cartridges, in particular, are used for these applications.

Depth Filtration:

In depth filtration, turbidity and sediments present in the water penetrate various depths of the filter cartridge and are retained there. Our wound filter cartridges are characterized by long service life, various micron ratings and sizes, an affordable price, and high temperature resistance.

Surface Filtration:

For maximum dirt holding capacity, filter cartridges from the field of surface filtration are used. This process retains impurities on the surface of the filter medium. With a variety of sizes and micron options, you benefit from durable materials and extremely low fiber release, making the filter cartridges suitable for a wide range of applications.

Activated Carbon Filtration:

The B2B portal Kwerk GmbH offers you a wide selection of high-quality activated carbon filters for the water and wastewater technology sector. Our comprehensive range of activated carbon filtration solutions is based on various core technologies, including conventional activated carbon blocks. Choose the conventional activated carbon block for applications where the reduction of chloramines or organic substances (VOC and TTHM) is required. Or opt for Fibredyne technology when it comes to reducing particulates, clog resistance, reducing large organic compounds, and maintaining a low pressure drop over the lifespan of the filter cartridge. Our offering also includes granular and pleated activated carbon filters designed to reduce bacteria, cysts, as well as chlorine and flavors.

Trust in the B2B portal Kwerk GmbH and benefit from our many years of experience and extensive range of filter solutions. Contact us today to discuss your individual requirements.

Optimize your shopping experience with our detailed delivery information

Plastic pipe systems

Overview of plastic pipe systems
Technical information on ABS pipe systems
Technical information on PVC  U pipe systems
Technical information on PVC  U transparent pipe systems
Technical information on PVC  C pipe systems
Technical information on PP pipe systems
Technical information on PP-R pipe systems
Technical information on PE pipe systems
Technical information on PVDF pipe systems

Chemiedur - pipe

Technical information on UP-GF (FRP) pipe systems
UP-GF (FRP) pipes
UP-GF (FRP) molded parts and connection
UP-GF-PP (FRP) molded parts and connection
UP-GF (FRP) adhesive collars
UP-GF (FRP) loose flanges
Pot Strainer DN 200 - DN 500 Inliner PP/FRP Coated
Pot Strainer DN 200 - DN 500 Inliner FRP/CBL Coated
Angle Seat Strainer DN 200 - DN 400 Inliner FRP/CBL Coated
Manhole mad of FRP and PP/FRP

Plastic pipes

Calculator for cutting pipes
Guidelines for sawing plastic pipe
Leftovers in plastic pipe
Standardization of plastic pipes and molded parts
PVC U pipes deviations
Pressure loss in pipe systems out of PVC U, PVC C and ABS pipe systems
Distinction between Rp, R and G threads
Screw lengths for flange connections

Plastic fittings

PVC U transparent ball valves
Diaphragm valves
Block valves
Butterfly valves
Plastic needle valves


Plastic Valves according to ATEX

New EU guideline 2014/34/EU
Plastic Valves in EX zones
Y-Strainers PP-EL DN 15 - DN 50
Check valves PP-EL DN 15 - DN 50
Angle seat valves PP-EL DN 15 - DN 50

Bonding of plastic pipes

Bonding manual
Video showing the bonding of pipes

Plastic welding

Guidelines for extrusion welding

Grids / support grids

GFK grids
Grids out of PP -el electrically conductive
Profile support grids out of PP -el electrically conductive

Molded ventilation parts

Ventilation technology

Chemical hose

PVC transparent hose with fabric inlay

Industrial tanks and chemical containers

Dosing tanks and outer containers 35 – 1000 Liter
Salt dissolving tanks 60 -5000 Liter
Storage tanks and vats
Storage tanks for water
Safety and collecting troughs
Industrial tank delivery program
Dosing tanks with agitator
Dosing tank agitators
Dosing tanks with attachments
Dosing tanks made of sheet material
Customized chemical containers
Dosing tanks with level indicators



IBC screw caps DN 150/DN 200
IBC adapters out of PE
IBC adapters out of PP

Attachment parts for tank construction

Vapor separators
CO2 - absorbes
Revision nozzles
Block flange

Filter housings and filter cartridges

PENTEK 3G Slime Line filter housings
PENTEK 3G Standard filter housings
PENTEK Big Blue filter housings
PENTEK PP high temperature filter housings
PENTEK PP all nature filter housings
PENTEK filter bags for Big Blue filter housings
PENTEK surface filter cartridges
PENTEK filter cartridges for depth filtration
PENTEK filter cartridges with activated carbon
CINTROPUR filter systems
CINTROPUR water filters

Flange configurator

Blind flanges, loose flanges,  rectangular flanges

Chemical resistance

Table of chemical resistance for plastic pipe systems

Machined plastic parts

Screw-in parts
Threaded fittings
Screw fittings

Milled plastic parts

Loose flanges and blind flanges made of sheet material

Static mixers

Static mixers made of plastic


Single-type and double-type strainers
Pot strainer DN 300
Angle seat strainer DN 500

Flow meters

Variable area flow meters
Configuration tool for flow meters

Filter presses

Laboratory filter presses

Injection molded parts

Scraper made of PE for filter press

Kwerk Practice Blog

The Kwerk team blogs from the field here

Partnership at the highest level.