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DIN 11853 coupling


This newly developed coupling is a further development of the DIN 11864-A coupling from the Pharma series. Since the DIN 11864-A coupling is frequently used and meets all current guidelines, they have developed an additional range. DIN 11864-A is only available in 316L stainless steel with orbitally weldable ends as standard. The DIN 11853 coupling is exactly the same, the only difference is that it is also made from 304L stainless steel with short weldable ends.

Dimension range and material
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

Connection
Welding (S). Other connections do not correspond to any standard: blind, hose connection, screw. 

Seals
EPDM, FKM (Viton), HNBR, MVQ (silicone).


Overview of DIN 11853 couplings

DIN 11853 couplings are divided into three groups

Hygienic screw couplings

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Hygienic flange couplings

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Hygienic clamp connections

Go to clamp connections

DIN11864
Gasket O-rings

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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.

DIN 11853
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*
* Not standardized but available

DIN 11851

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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