Special  >  Metal systems  >  Pipe couplings-ARPOL  >  type FIX-L, quality A4


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EPDM sealing sleeve  

EPDM sealing sleeve


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  NBR sealing sleeve  

NBR sealing sleeve


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  Silicone Blue sealing sleeve  

Silicone Blue sealing sleeve


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Connecting Excellence with Stainless Steel Precision



Arpol is an internationally recognized manufacturer of stainless steel pipe couplings and connection technology. The company was founded in the early 1980s and has since earned a reputation for innovative and high-quality solutions in the field of stainless steel pipe connection technology.

Arpol stainless steel pipe couplings are characterized by their reliability, flexibility, and easy installation. They are used in a variety of applications, ranging from industrial processing to building technology and infrastructure projects.

One outstanding feature of Arpol stainless steel pipe couplings is their adaptability to different pipe diameters and materials. This provides a versatile solution for connecting stainless steel pipe systems.

The installation of Arpol stainless steel pipe couplings is simple and does not require any special tools or welding. The couplings are simply placed around the stainless steel pipes to be connected and secured with screws or nuts. This allows for quick and efficient assembly, saving time and costs.

Arpol stainless steel pipe couplings provide high tightness and resistance to pressure, vibrations, and temperature fluctuations. They ensure a secure and leak-free connection of stainless steel pipes, even under demanding operating conditions.

Furthermore, Arpol stainless steel pipe couplings are known for their durability and maintenance-free operation. They are made of high-quality stainless steel and offer long-term performance without the need for regular maintenance or readjustment. Stainless steel also provides high corrosion resistance, ensuring a long service life for the couplings.

Arpol offers an extensive product range, including various types and sizes of stainless steel pipe couplings, to meet the requirements of different applications. The company places great emphasis on quality and complies with international standards and certifications in the stainless steel industry.

In summary, Arpol stainless steel pipe couplings are a proven solution for reliable connection of stainless steel pipe systems. They offer easy installation, flexibility, tightness, and durability, making them a preferred choice in various industries.


V2A and V4A are designations for different types of stainless steel alloys. The letter "V" stands for "Verschleißfestigkeit" (wear resistance) in German, which translates to "wear resistance" in English, and the numbers "2" and "4" refer to the chromium content in the alloy.

V2A stainless steel, also known as AISI 304 or 1.4301, mainly consists of iron, chromium (approximately 18%), and nickel (approximately 8%). This alloy offers good corrosion resistance and is suitable for use in many applications. V2A stainless steel is often used in areas that do not have direct contact with aggressive chemicals or saltwater, such as indoor environments, construction, household appliances, or food processing.

V4A stainless steel, also known as AISI 316 or 1.4401, is an advancement of V2A stainless steel and contains additional elements such as molybdenum (approximately 2-3%) in addition to chromium and nickel. This gives V4A stainless steel even higher corrosion resistance, especially against chloride-containing media such as seawater or chemical solutions. Therefore, V4A stainless steel is commonly used in marine environments, the chemical industry, swimming pools, or applications that require high corrosion resistance.

The main difference between V2A stainless steel and V4A stainless steel lies in their corrosion resistance. V4A stainless steel offers improved resistance to more aggressive environments, particularly chloride-containing media. When choosing between the two alloys, it is important to consider the specific requirements of the application, especially regarding the environment and the type of chemicals used.

EPDM, FPM, Silicone, and NBR are abbreviations for different types of elastomers used in sealing technology and other industrial applications. Here are the differences between them

:

- EPDM (Ethylene Propylene Diene Monomer): EPDM is a synthetic elastomer with excellent resistance to weathering, ozone, UV radiation, and temperature extremes. It is also resistant to water, steam, acids, bases, and many chemicals. EPDM is commonly used in the automotive industry, construction, plumbing, and the food industry.

- FPM (Fluoro Rubber, also known as FKM or Viton): FPM is a fluorinated elastomer with excellent resistance to high temperatures, chemicals, fuels, oils, and solvents. It exhibits high thermal and chemical stability and is therefore frequently used in demanding applications such as the chemical industry, oil and gas industry, automotive industry, and aerospace.

- Silicone Rubber: Silicone is an elastomer known for its high temperature resistance, good electrical insulation, and excellent weather resistance. Silicone rubber is flexible, soft, and has good aging resistance. It is used in a variety of applications including the food industry, medical devices, electronics, lighting technology, and the automotive industry.

- NBR (Nitrile Rubber, also known as Nitrile or Buna-N): NBR is a synthetic elastomer with good resistance to oils, fuels, solvents, and petroleum-based chemicals. It also has good mechanical strength and high abrasion resistance. NBR is commonly used in applications that require oil resistance, such as the automotive industry, oil and gas industry, hydraulic systems, and seals for industrial equipment.

It is important to note that the selection of the appropriate elastomer depends on the specific requirements of the application, including the type of chemicals, temperatures, pressures, and other environmental conditions to which the material will be exposed.


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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 TANKS/CONTAINERS


IBC screw caps DN 150/DN 200
IBC adapters out of PE
IBC adapters out of PP
MULTI FLEX BLOCK for IBC BULK CONTAINER


Attachment parts for tank construction


Vapor separators
CO2 - absorbes
Manholes
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


Inserts
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

Strainers


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



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