Water filter housings  

Water filter housings

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  Water filter  

Water filter

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  UV Sterilisation  

UV Sterilisation

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FRP Strainer  

FRP Strainer

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  Basket Strainer  

Basket Strainer

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  Y- Strainer  

Y- Strainer

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Pot Strainer  

Pot Strainer

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  Filter press  

Filter press

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Kwerk GmbH: Your partner for premium filter technology and customized solutions.

Welcome to the B2B portal of Kwerk GmbH in the field of filter technology: Quality and innovation for your filtering needs.

As a leading B2B portal in the field of filter technology, Kwerk GmbH is your reliable partner for high-quality filter solutions. Our extensive range includes a variety of filter products, including premium water filters and water filter housings from Pentek, innovative UV water filters and UV sterilization solutions from Cintropur, as well as reliable single and double strainers from the renowned company Hayward.

Pentek’s water filters and water filter housings set the standard for quality and performance. They provide effective filtration to remove impurities and contaminants from the water, ensuring excellent water quality. With their robust construction and durability, they are ideal for use in various applications.

Cintropur’s UV water filters and UV sterilization solutions offer an innovative method for water purification. By utilizing ultraviolet light, they effectively eliminate microorganisms such as bacteria and viruses, resulting in a hygienic and germ-free water quality. These advanced solutions guarantee clean and safe water for your specific requirements.

Hayward’s single and double strainers are essential components for optimal filtration and protection of your water systems. With their precise construction, they reliably capture coarse particles and sediment, preventing blockages and damage to sensitive components. Hayward’s proven quality ensures long-term and reliable performance.

In addition, Kwerk GmbH also offers high-quality pot strainers and strainers made of fiberglass-reinforced plastic (FRP). Our pot strainers are known for their high efficiency and adaptability to various industrial applications. They guarantee effective removal of dirt particles and ensure smooth operation of your systems. Our fiberglass-reinforced plastic strainers stand out for their corrosion resistance and high strength, making them an ideal choice for demanding environments.

Furthermore, we provide you with strainers in an inclined seat design, allowing for optimal filtration and flow performance. With their special design, they minimize blockages and maximize the utilization of the filter area. These inclined seat strainers are perfect for applications where efficient dirt separation and smooth water flow are crucial.

Trust Kwerk GmbH and benefit from our years of experience and extensive range of filter solutions. Our B2B portal offers you a convenient and reliable way to find the best filter products for your specific requirements.

Contact us today and discover the diverse possibilities that Kwerk GmbH offers in the field of filter technology. We are ready to assist you with our expertise in finding customized solutions for your filtering needs. Rely on quality, innovation, and excellent service from Kwerk GmbH - your trusted partner for filter technology.

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.