FLANGE CONNECTIONS - SCREWS LENGTHS



Along with products and services, Kwerk GmbH provides useful information for the order management in your company. In most offices, the lengthy registration of number and type of flange connections in plastic pipeline systems, is a major issue. Individual evaluation, recording, looking in catalogues or on the internet, requires technical staff and is not an insignificant cost factor for the company.



 
The overview below shows all usual flange connections, when working with plastic pipeline systems. The chart provides a summary of type, screw lengths and number of the necessary elements.
We would be glad to receive further proposals or recommendations from you. This overview  is made by practitioners for practitioners.


 

PVC - PVC FLANGE CONNECTION



bestehend aus:
2 pieces of PVC flanged bushes
2 pieces loose flanges PP with steel insert
1 piece of gasket (EPDM, FPM, HYPALON)
    Da (mm) 20 25 32 40 50 63 75 90 110 125 140 160 200 225
    screw length (mm) 55 60 70 75 80 80 80 85 85 90 100 110 130 130
    Number of hexagon screws M12 4 4 4                      
    Number of hex nuts M12 4 4 4                      
    Number of slices A13 8 8 8                      
    Number of hexagon screws M16       4 4 4 4 8 8 8 8      
    Number of hex nuts M16       4 4 4 4 8 8 8 8      
    Number of slices  A17       8 8 8 8 16 16 16 16      
    Number of hexagon screws M20                       8 8 8
    Number of hex nuts M20                       8 8 8
    Number of slices A21                       16 16 16
 


 

PVC - PP/PE FLANGE CONNECTION



bestehend aus:
1 piece of PVC collar bush
2 pieces loose flanges PP with steel insert
1 piece of gasket (EPDM, FPM, HYPALON)
1 piece PE / PP welding collar
    Da (mm) 20 25 32 40 50 63 75 90 110 125 140 160 200 225
    screw length (mm) 60 60 70 75 85 85 90 90 95 95 110 115 130 130
    Number of hexagon screwsM12 4 4 4                      
    Number of hex nuts M12 4 4 4                      
    Number of slices A13 8 8 8                      
    Number of hexagon screws M16       4 4 4 4 8 8 8 8      
    Number of hex nuts M16       4 4 4 4 8 8 8 8      
    Number of slices A17       8 8 8 8 16 16 16 16      
    Number of hexagon screws M20                       8 8 8
    Number of hex nuts M20                       8 8 8
    Number of slices A21                       16 16 16
 



 

PVC - Stahl FLANGE CONNECTION



bestehend aus:
1 piece of PVC collar bush
1 piece loose flanges PP with steel insert
1 piece of gasket (EPDM, FPM, HYPALON)
1 piece steel welding flange
    Da (mm) 20 25 32 40 50 63 75 90 110 125 140 160 200 225
    screw length (mm) 55 55 60 65 70 70 70 75 75 80 85 90 100 100
    Number of hexagon screws M12 4 4 4                      
    Number of hex nuts M12 4 4 4                      
    Number of slices A13 8 8 8                      
    Number of hexagon screws M16       4 4 4 4 8 8 8 8      
    Number of hex nuts M16       4 4   4 8 8 8 8      
    Number of slices A17       8 8 8 8 16 16 16 16      
    Number of hexagon screws M20                       8 8 8
    Number of hex nuts M20                       8 8 8
    Number of slices A21                       16 16 16
 



 

PP/PE - PP/PE FLANGE CONNECTION



bestehend aus:
2 pieces PE / PP welding collar
2 pieces loose flanges PP with steel insert
1 piece of gasket (EPDM, FPM, HYPALON)
    Da (mm) 20 25 32 40 50 63 75 90 110 125 140 160 180 200 225
    screw length (mm) 60 65 75 80 85 90 95 95 110 115 125 130 140 145 145
    Number of hexagon screwsM12 4 4 4                        
    Number of hex nuts M12 4 4 4                        
    Number of slices A13 8 8 8                        
    Number of hexagon screws M16       4 4 4 4 8 8 8 8        
    Number of hex nuts M16       4 4 4 4 8 8 8 8        
    Number of slices A17       8 8 8 8 16 16 16 16        
    Number of hexagon screws M20                       8 8 8 8
    Number of hex nuts M20                       8 8 8 8
    Number of slices A21                       16 16 16 16
 


 

PP/PE - PP/PE FLANGE CONNECTION



bestehend aus:
1 piece PE / PP welding collar
1 piece loose flanges PP with steel insert
1 piece of gasket (EPDM, FPM, HYPALON)
1 piece of steel welding flange
    Da (mm) 20 25 32 40 50 63 75 90 110 125 140 160 180 200 225
    screw length (mm) 55 60 65 70 70 75 80 80 85 85 90 95 95 105 105
    Number of hexagon screws M12 4 4 4                        
    Number of hex nuts M12 4 4 4                        
    Number of slices A13 8 8 8                        
    Number of hexagon screws M16       4 4 4 4 8 8 8 8        
    Number of hex nuts M16       4 4 4 4 8 8 8 8        
    Number of slices A17       8 8 8 8 16 16 16 16        
    Number of hexagon screws M20                       8 8 8 8
    Number of hex nuts M20                       8 8 8 8
    Number of slices A21                       16 16 16 16
 



 

PVC - BUTTERFLY VALVE - PVC  FLANGE CONNECTION



bestehend aus:
2 pieces of PVC flanged bushes
2 pieces loose flanges PP with steel insert
1 piece PVC butterfly valve
    Da (mm) 75 90 110 140 160 225  
    screw length (mm) 130 135 145 170 180 200  
    Number of hexagon screws M16 4 8 8 8      
    Number of hex nuts M16 4 8 8 8      
    Number of slices A17 8 16 16 16      
    Number of hexagon screws M20         8 8  
    Number of hex nuts M20         8 8  
    Number of slices A21         16 16  
 


 

PVC - BUTTERFLY VALVE - PP/PE  FLANGE CONNECTION



bestehend aus:
1 piece of PVC collar bush
2 pieces loose flanges PP with steel insert
1 piece PVC butterfly valve
1 piece PP / PE pre-weld collar
    Da (mm) 75 90 110 140 160 75225  
    screw length (mm) 135 140 150 175 185 200  
    Number of hexagon screws M16 4 8 8 8      
    Number of hex nuts M16 4 8 8 8      
    Number of slices A17 8 16 16 16      
    Number of hexagon screws M20         8 8  
    Number of hex nuts M20         8 8  
    Number of slices A21         16 16  
 



 

PP/PE - BUTTERFLY VALVE - PP/PE  FLANGE CONNECTION



bestehend aus:
2 pieces PP / PE pre-weld collar
2 pieces loose flanges PP with steel insert
1 piece PVC butterfly valve
    Da (mm) 75 90 110 140 160 225  
    screw length (mm) 140 145 155 175 185 200  
    Number of hexagon screws M16 4 8 8 8      
    Number of hex nuts M16 4 8 8 8      
    Number of slices A17 8 16 ^6 16      
    Number of hexagon screws M20         8 8  
    Number of hex nuts M20         8 8  
    Number of slices A21         16 16  
 







PLASTIC  FLANGES - LOOSE FLANGES - BLIND FLANGES


For heavy industrial use, machine and plant engineering and chemical industry, Kwerk GmbH offers a wide range of plastic flanges in the form of loose flanges made of PP/steel and blind flanges. The plastic flanges provided by producer/supplier are  seamlessly sprayed, thick walled and diffusion-resistant PP loose flanges and blind flanges with PP-GF coating. Dimensions comply with ISO / DIN 2501 PN 10. In the industrial plant construction for plastic pipe systems, the flanges are intended to be used with flange sleeves and stub flanges according to ISO / DIN. Because of the combination of an extremely hard steel core with high yield strength and a coating with elastic PP (black) with a chemically coupled glass fibre content, the flanges are the ideal connection element for plastic pipe systems. They are corrosion-proof, give high reliability in continuous operation and are temperature resistant up to 80°C,. Consequently there is no plastic deformation considering the tightening torques in accordance with the requirements of the user.





INFORMATION TO OUR DELIVERY PROGRAM



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

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


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