An SMS union is a hygienic pipe fitting commonly used in the food, dairy, beverage, and pharmaceutical industries for easy assembly and disassembly of pipelines. Made from high-grade stainless steel (typically 304 or 316L), SMS unions consist of a nut, liner (male part), and welding male (female part), sealed with a food-grade rubber gasket (EPDM, NBR, or PTFE). Designed to Swedish Milk Standard (SMS 1145), they ensure a smooth, crevice-free internal surface to prevent contamination. Available in sizes from DN25 to DN100, SMS unions offer excellent corrosion resistance, easy cleaning, and compliance with hygienic standards like 3A, EHEDG, and FDA.
