Pipe Systems  >  PVC U Pipe Systems  >  PVC U Valves  >  PVC U Foot Valve

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male ends, solvent welding  

male ends, solvent welding


Kwerk GmbH - Your Reliable Partner for Premium PVC U Valves from FIP Italy in Europe

Welcome to Kwerk GmbH - your leading provider of high-quality PVC U valves from FIP Italy in Europe.

As a longstanding strong partner of FIP Italy, we are proud to offer you a comprehensive selection of premium PVC U valves. Our range includes a variety of products specifically designed to meet the requirements of pipeline systems. With our expertise and commitment to quality and customer satisfaction, we strive to provide you with the best solutions for your individual applications.

Our PVC U laboratory valves are specially designed for use in laboratory environments. They are characterized by precise flow control, chemical resistance, and long lifespan. FIPís angle seat valves offer reliable sealing and easy operation, making them ideal for applications that require precise flow control.

FIPís PVC U check valves prevent the undesired backflow of media and ensure smooth media flow in one direction. With their robust constructions and reliable sealing, they are an excellent choice for various applications.

Our PVC U pressure relief valves enable precise control of pressure in pipeline systems. They ensure a constant pressure and offer easy handling. FIPís PVC U ball check valves provide one-way flow and effectively prevent the backflow of media. They are known for their reliable sealing and quick response.

FIPís venting valves allow efficient air venting in pipeline systems, while our PVC U foot valves ensure one-way media flow and prevent backflow into the pump. Our PVC U air release valves provide effective ventilation of pipeline systems, ensuring smooth operation.

Kwerk GmbH takes pride in being a longstanding strong partner of FIP Italy. We are one of the largest providers of PVC U valves in Europe, known for our quality, reliability, and top-notch customer service. As an authorized online retailer, we offer you access to a wide range of FIP products that meet the highest quality standards.

Trust in the expertise and experience of Kwerk GmbH when it comes to high-quality PVC U valves from FIP Italy. Visit our B2B portal or contact our team to get more information, receive personalized consultation, or obtain tailor-made offers. We look forward to providing you with the best solutions for your pipeline systems and meeting your requirements.

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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.