DIN 11853 coupling
The DIN 11853 coupling is a modern variant derived from the proven DIN 11864-A coupling, which has long been established in the pharmaceutical industry. As the DIN 11864-A is a widely used standard that perfectly aligns with current guidelines, it was decided to expand on this trusted design. While the DIN 11864-A standard is exclusively available in high-grade stainless steel 316L with orbital weld ends, the DIN 11853 coupling offers an alternative. It features the same design but is made from stainless steel 304L and equipped with short weld ends. This innovation provides greater flexibility in material selection, without compromising on reliability or compatibility.
According to EN 10357-A and DIN 11850-R2.
According to the standard, forged materials must be used.
Tolerances and specifications
DIN 405-1 and 2, DIN 11887, DIN ISO 2768-1, ISO 48, FDA and BGA
Type and codes
DIN 11853-1: screw coupling
DIN 11853-2: flange connection
DIN 11853-3: clamp connection
Ra value < 0 .8μm
Welding (S). Other connections do not correspond to any standard: blind, hose connection, screw.
Seals
EPDM, FKM (Viton), HNBR, MVQ (silicone).
Hygienic screw couplings
Go to screw couplings
Hygienic flange couplings
Go to flange couplings
Hygienic clamp connections
Go to clamp connections
DIN11864
Gasket O-rings
Go to gaskets
Dimensions for DIN 11853
Dimensions for DIN 11853 Couplings These couplings are available in DIN, INCH and ISO variants and offer flexibility in pipe sizes, as shown in the overview below.
| Reihe A (DIN) | Reihe B (ISO) |
Reihe C (INCH)
|
| 13 x 1,5 | 13,5 x 1,6 |
17,2 x 1,65
|
| 19 x 1,5 | 17,2 x 1,6 |
19,05 x 1,65
|
| 23 x 1,5 | 21,3 x 1,6 |
25,4 x 1,65
|
| 29 x 1,5 | 26,9 x 1,6 |
38,1 x 1,65
|
| 35 x 1,5 | 33,7x 2,0 |
50,8 x 1,65
|
| 41 x 1,5 | 42,4 x 2,0 |
63,5 x 1,65
|
| 53 x 1,5 | 48,3 x 2,0 |
76,2 x 1,65
|
| 70 x 2,0 | 60,3 x 2,0 |
101,6 x 2,11
|
| 85 x 2,0 | 76,1 x 2,0 | |
| 104 x 2,0 | 88,9 x 2,3 | |
| 129 x 2,0* | 114,3 x 2,3 | |
| 154 x 2,0* |
Areas of application for elastomers
| NBR | HNBR | EPDM | MVQ | FPM / FKM | |
| Market name | Perbunan / Buna-N / Nitrilrubber | HNBR | EPDM | Silicone | Viton |
| Official name | Acrylnitril-Butaieen rubber | Hydrated NBR | Ethyleen-Propyleen-Dieen Monomer | Dimethiy silicone rubber | Fluor Carbon rubber |
| Color | Blue / white | Yellow | Black | Red / transparent white | Green / black |
| FDA approval | FDA/BgVV XXI | FDA/BgVV XV | FDA/BgVV XXI | FDA/BgVV XXI | FDA/BgVV XXI |
| Working temp. ca. | -20° C - 100°C | -25° C - 100°C | -40° C - 130°C | -30° C - 120°C | -25° C - 220°C |
| Durability | |||||
| Vapor | X | ++ | ++ | X | X |
| Steam | - | + | ++ | X | X |
| Hot air | X | + | + | ++ | ++ |
| Fat | ++ | ++ | - | + | ++ |
| Oil | ++ | ++ | X | + | ++ |
| Acid | X | * | ++ | X | ++ |
| Bases | - | * | - | X | ++ |
X = not resistant - = bad resistant + = resistant ++ = excellent resistance * = specific resistance to acids / bases retrievable
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