View Tameson's range of DIN 11851 fittings. The DIN 11851 fittings are also known as sanitary fittings or dairy couplings. These fittings are made of stainless steel according to DIN 11851 standard and are interchangeable with other fittings of this standard. They are designed specifically for use in the food industry. They consist of a cone nozzle and a threaded end, which are connected with each other using a union nut. Sealing is done with elastomer seals, which are selected based on the medium. A light cleaning is achieved by using round threads and surfaces with low surface roughnesses. The dairy unions are frequently used with hoses that were designed specifically for the food industry.