Sanitary fittings are used in process lines and equipment in the food, beverage, and pharmaceutical industries where cleanliness is important. Includes both quick-clamp and butt weld variants. The former are connected with clamps that are easy to install and disconnect for easy access to the process line. The latter are welded to create a permanent connection. Sanitary fittings are also known as 3A fittings, aseptic fittings, tri-clamp fittings, tri-clover fittings, and quick-clamp fittings.