Sanitary Ball Valve Sanitary ball valves feature a full-bore design that enables full fluid flow with minimal pressure drop, making them ideal for handling viscous liquids or liquids containing particles in the food, beverage, chemical and pharmaceutical industries. full bore sanitary ball valves, low ferrite 316L, 1/2" - 4" (DN15 - DN100), TFM seats (cavity and non-cavity) and seals, for pharma clean steam, air and gas, acids and pneumatic conveyance of pharma powders. BST is one of only a few sanitary ball valve manufacturers in the world to manufacture (and stock) thru-bore sanitary valves in a variety of sizes and end connections.