Stainless steel couplings Index Fittings BE-001 page 367 20080301 A Index and product compare General information page Introduction 368 Product information Couplings, DIN 11851 page DIN - butt weld connections DN 10 - 150 369 Couplings DIN 11851 page "Inch" - butt weld connections 1" - 4" 370 Couplings, DIN 11851 page ISO - butt weld connection DN 10 - 100 371 Couplings, DIN 11864-1 page DIN - butt weld connection, short Face To Face DN 10 - 100 372 Flange connections, DIN 11864-2 page DIN - butt weld connections, short Face To Face DN 10 - 150 373 Other coupling parts page General 374 Pipe system components page General 375
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Stainless steel couplingsIndex
Fittings BE-001 page 367
2008
0301
A Index and product compare
General informationpage
Introduction 368
Product informationCouplings, DIN 11851 page
DIN - butt weld connectionsDN 10 - 150 369
Couplings DIN 11851 page"Inch" - butt weld connections
1" - 4" 370
Couplings, DIN 11851 pageISO - butt weld connection
DN 10 - 100 371
Couplings, DIN 11864-1 pageDIN - butt weld connection, short Face To Face
DN 10 - 100 372
Flange connections, DIN 11864-2 pageDIN - butt weld connections, short Face To Face
DN 10 - 150 373
Other coupling parts pageGeneral 374
Pipe system components pageGeneral 375
Stainless steel couplings
Fittings BE-002 page 368
2008
0301
In the production of foodstuffs, it is important during production processes to reduce the risk of contamination andstagnation in the pipe systems to an absolute minimum. Contamination and stagnation can lead to decay of the product."Dead legs" and places where the medium can stand still must therefore be avoided wherever possible. This makesconventional flanges and screwed connections unsuitable, due to their construction. Instead, specifically-designed pipecomponents and fittings are used, primarily manufactured in stainless steel. These have inside and outside surfacesmanufactured to sufficient smoothness, and are easy to dismantle and clean.
The most commonly used tube connection is the four-part screwed coupling compliant with DIN 11851, also known as the"milk coupling". This can be produced as welded coupling for various tube standards, expanding union, and fitted with hosebarb.
The DIN 11864 couplings, produced as threaded coupling and as "clean" flange connection, serve to provide increasedsafety. These couplings are also suitable for aseptic applications.
In principle, fittings and pipe components are suitable for alimentary purposes provided they are manufactured in stainlesssteel, with a minimum of "dead legs", produced to sufficient smoothness and easy to clean.
These connections are also suited to other purposes (e.g. chemical and pharmaceutical industries).
MaterialsStainless steel 1.4301 and 1.4404.
Tube dimensions [mm]NW DIN DIN 11850 Inch NW ISO 4200/EN 1127
reihe 0 reihe 1 reihe 2 reihe 3 ["] [mm] reihe 1A reihe 1B10 12 x 1 12 x 1 13 x 1.5 14 x 2 10 17.2 x 1.615 18 x 1.5 18 x 1 19 x 1.5 20 x 2 15 21.3 x 1.620 22 x 1.5 22 x 1 23 x 1.5 24 x 2 20 26.9 x 1.625 28 x 1.5 28 x 1 29 x 1.5 30 x 2 1 25.4 x 1.25 25 33.7 x 1.6 33.7 x 232 34 x 1.5 34 x 1 35 x 1.5 36 x 2 1B 31.8 x 1.25 32 42.4 x 1.6 42.4 x 240 40 x 1.5 40 x 1 41 x 1.5 42 x 2 1A 38.1 x 1.5 40 48.3 x 1.6 48.3 x 250 52 x 1.5 52 x 1 53 x 1.5 54 x 2 2 50.8 x 1.5 50 60.3 x 1.6 60.3 x 265 70 x 2 2A 63.5 x 1.5 65 76.1 x 1.6 76.1 x 2.380 85 x 2 3 76.1 x 2 80 88.9 x 2 88.9 x 2.3
100 104 x 2 4 101.6 x 2 100 114.3 x 2 114.3 x 2.6125 129 x 2150 154 x 2Usually within the indicated standard
Stainless steel couplingsCouplings, DIN 11851DIN - butt weld connections
These four-piece threaded couplings rated DIN 11851 are specifically designed foralimentary purposes.The simple design makes dismantling and cleaning extremely easy.Leak-free, thanks to exchangeable soft seal.
Butt weld connections for tube dimensions as per DIN 11850 (the exact dimensions arestated on the introductory page for this section).
The thread of swivel and threaded nipple are as per DIN 405.
All sealing materials used conform to FDA guidelines.
Material specificationComponent Material EN and/or (DIN) W.nr.
Temperature rangeNBR/Perbunan (blue) up to maximum 130 °C, depending on the mediumEPDM (black) up to maximum 130 °C, depending on the mediumVITON (black) up to maximum 190 °C, depending on the mediumPTFE (white) up to maximum 240 °C, depending on the mediumSilicone (transparent) up to maximum 190 °C, depending on the medium
Options• Nipple, threaded nipple in WS.1.4404• Seal Silicone, EPDM, VITON, PTFE• Seal with extra inside ring• Raised seal• Nipple and threaded nipple with extended weld stubs
These four-piece threaded couplings rated DIN 11851 are specifically designed foralimentary purposes.The simple design makes dismantling and cleaning extremely easy.Leak-free, thanks to exchangeable soft seal.
Butt weld connections for tube dimensions as per "Inch" (the exact dimensions arestated on the introductory page for this section).
The thread of swivel and threaded nipple are as per DIN 405.
All sealing materials used conform to FDA guidelines.
Material specificationComponent Material EN and/or (DIN) W.nr.
Temperature rangeNBR/Perbunan (blue) up to maximum 130 °C, depending on the mediumEPDM (black) up to maximum 130 °C, depending on the mediumVITON (black) up to maximum 190 °C, depending on the mediumPTFE (white) up to maximum 240 °C, depending on the mediumSilicone (transparent) up to maximum 190 °C, depending on the medium
Options• Nipple weld stub, threaded weld stub in WS. 1.4404• Seal Silicone, EPDM, VITON, PTFE• Seal with extra inside ring• Raised seal• Nipple weld stub and threaded weld stub with extended weld stubs
These 4-part threaded coupling as per DIN 11851 are specifically designed foralimentary purposes.The simple design makes dismantling and cleaning extremely easy.Leak-free, thanks to exchangeable soft seal.
Butt weld connections for tube dimensions as per ISO/EN 1127 (the exact dimensionsare stated on the introductory page for this section).
Coupling parts with butt weld connections as per ISO/EN 1127 have a reduced bore.
The thread of swivel and threaded nipple are as per DIN 405.
All sealing materials used conform to FDA guidelines.
Material specificationComponent Material EN and/or (DIN) W.nr.
Temperature rangeNBR/Perbunan (blue) up to maximum 130 °C, depending on the mediumEPDM (black) up to maximum 130 °C, depending on the mediumVITON (black) up to maximum 190 °C, depending on the mediumPTFE (white) up to maximum 240 °C, depending on the mediumSilicone (transparent) up to maximum 190 °C, depending on the medium
Options• Nipple weld stub, threaded weld stub in WS. 1.4404• Seal Silicone, EPDM, VITON, PTFE• Seal with extra inside ring• Raised seal
These four-piece threaded couplings rated DIN 11864-1 are specifically designed foralimentary purposes requiring greater safety.The simple design makes dismantling and cleaning extremely easy.Because of the precisely encapsulated O-ring and the axially and radially constrainedcoupling parts, no dead spaces.
Butt weld connections for pipe dimensions as per DIN 11850 Reihe 2 (the exactdimensions are stated on the introductory page to this section).
The thread of swivel and threaded nipple are as per DIN 405.
All sealing materials used conform to FDA guidelines.
Material specificationComponent Material EN and/or (DIN) W.nr.
Temperature rangeEPDM (black) up to maximum 130 °C, depending on the medium
Options• Butt weld connections for DIN 11850 Reihe 2, long Face To Face• Butt weld connections for DIN 2463 ISO, short Face To Face• Butt weld connections for DIN 2463 ISO, long Face To Face
These three-piece flange connections rated DIN 11864-2 are specifically designed foralimentary purposes requiring greater safety.
Because of the precisely encapsulated O-ring and the axially and radially constrainedcoupling parts, entirely without dead spaces.
Butt weld connections for pipe dimensions as per DIN 11850 Reihe 2 (the exactdimensions are stated on the introductory page to this section).
All sealing materials used conform to FDA guidelines.
Material specificationComponent Material EN and/or (DIN) W.nr.Flange Stainless steel X2CrNiMo17-12-2 (G-X2CrNiMo18 10) 1.4404O-ring EPDM
Temperature rangeEPDM (black) to max. 130 °C, depending on medium
Options• Butt weld connections for DIN 11850 Reihe 2, long Face To Face• Butt weld connections for DIN 2463 ISO, short Face To Face• Butt weld connections for DIN 2463 ISO, long Face To Face
Ordering informationOrdering code Article Dimensions [mm]FDA310A Complete coupling 10-150FDA308K Raised face flange with groove 10-150FDA309K raised face flange with O-ring groove 10-150FDA211 O-ring 10-150