DIN SMS SS304 SS316L Sanitary Pipe Fittings Stainless Steel Union

1. Brief Introduction of Products:

Sanitary union fittings are specialized, high-purity components designed to connect pipes, tubes, and equipment in hygienic systems. Used primarily in the pharmaceutical, biotechnology, food, beverage, and dairy industries, they feature crevice-free, bacteria-resistant designs. 

2. How They Work?

Unlike standard pipe connections, a sanitary union allows for easy assembly, disassembly, and cleaning without disturbing the rest of the piping system. A standard union set consists of four key parts:

•Male Ferrule / Part: Welded or expanded directly to the tubing.

•Liner Ferrule / Part: A flat or grooved counterpart welded to the mating tube.

•Gasket: Placed between the male and female faces to create a flush, hermetic seal.

•Union Nut: Screws over the male part to compress the liner and gasket together securely. 

3. Common Standards:

Sanitary unions are manufactured according to strict regional and global hygienic standards to ensure compatibility across processing equipment:

•DIN (DIN 11851 / DIN 11864): Widely used in European and global beverage and food processing.

•SMS (SMS 1145): Swedish standard (Swedish Manufacturing Standard) highly common in dairy and brewery applications.

•3-A Sanitary Standards (3A): A major US benchmark that ensures high cleanability and compliance with FDA regulations.

•RJT & IDF: British standards commonly found in older or legacy dairy and pharmaceutical operations. 

4. Technical Specification:

      DIN Standards

This product are also available in DIN, ISO/IDF, SMS, BSP standards. Please feel free to contact us if you need it in other standards!

5. Key Applications and Use Cases:

• Food and Beverage: Utilized in dairy processing, breweries, and bottling plants to prevent bacterial growth and safely manage consumable fluids. 

• Pharmaceuticals & Biotech: Deployed in bioprocessing lines, simplifying the maintenance of strict sterility and preventing product contamination.

• Cosmetics & Personal Care: Connects mixing, heating, and transfer equipment to ensure batch purity.