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The milk coupling, also known as the DIN 11851 coupling or dairy coupling, was originally designed to ensure a safe and hygienic connection between milk hoses and pipelines in the dairy industry. These couplings provide a leak-free and robust connection that is easy to assemble and disassemble, which is essential for cleaning and maintenance processes. Today, milk couplings are used not only in the dairy industry, but also in other sectors such as the chemical and pharmaceutical industry, where hygiene and reliability are crucial requirements. All milk couplings comply with the strict requirements of the DIN 11851 ISO standard, guaranteeing their quality and suitability for use in demanding environments.
| DIN Size | Inner Diameter (mm) | Inner Diameter Union Nut (mm) | Outer Thread Diameter (mm) |
| DN10 | 9,9 | 25,3 | |
| DN15 | 31,3 | ||
| DN20 | 19,7 | ||
| DN25 | 24,6 | 48,1 | 51,5 |
| DN32 | 31,8 | 54,3 | 57,2 |
| DN40 | 36,3 | 61,6 | 64,6 |
| DN50 | 49,3 | 74,5 | 77,4 |
| DN65 | 66,5 | 90,9 | 94,4 |
| DN75 | 72 | 100,4 | |
| DN80 | 80,5 | 100,9 | 109,2 |
| DN100 | 99,4 | 124,7 |
DIN 11851 dairy seals are hygienic seals for DIN 11851 couplings, used in the dairy and food industry. They ensure a leak-free, safe connection between pipes and fittings, and comply with strict hygiene standards.
<p dir="ltr" data-pm-slice="1 1 []">Primarily in the dairy industry, food production, and other hygienic processes such as milk processing, where cleanliness and safety are crucial.</p>
Dairy seals DIN 11851 are designed for safe and hygienic connections in the dairy and food industry. They are used with DIN 11851 couplings and guarantee a reliable, leak-free sealing of pipes and fittings. Made from high-quality materials such as EPDM, NBR or silicone, they are resistant to aggressive substances. These seals are easy to install and remove, ensuring efficient cleaning and minimal maintenance. They comply with strict hygiene standards and are ideal for applications in milk processing.
| DN Size | Inner Diameter (A) | Outer Diameter (B) | Thickness (C) | Height (H) | |
| DN10 | 12 | 20 | 4 | 4,5 | |
| DN15 | 18 | 26 | 4 | 4,5 | |
| DN20 | 23 | 33 | 5 | 4,5 | |
| DN25 | 30 | 40 | 5 | 5 | |
| DN32 | 36 | 46 | 5 | 5 | |
| DN40 | 42 | 52 | 5 | 5 | |
| DN50 | 54 | 64 | 5 | 5 | |
| DN65 | 71 | 81 | 5 | 5 | |
| DN75 | 78 | 88 | 5 | 5 | |
| DN80 | 85 | 95 | 6 | 5 | |
| DN90 | 94 | 104 | 6 | 5 | |
| DN100 | 104 | 114 | 6 | 6 | |
| DN125 | 130 | 142 | 6 | 7 | |
| DN150 | 155 | 167 | 6 | 7 |